«X МЕЖДУНАРОДНОЕ КУРНАКОВСКОЕ СОВЕЩАНИЕ ПО ФИЗИКО-ХИМИЧЕСКОМУ АНАЛИЗУ Сборник трудов 1 июля – 5 июля 2013 года ТОМ 1 Самара – 2013 1 Д 37 X Международное Курнаковское совещание по физикохимическому анализу: сборник ...»

2. Афанасьева О.С. Расчет состава и температур эвтектик трех- и четырехкомпонентных систем по известным характеристикам двухкомпонентных систем / О.С. Афанасьева, Г.Ф. Егорова // Вестник Сам. гос. техн.

ун-та. Сер. Физ.-мат. науки. 2011. № 4 (25). С. 134 – 145.

3. Афанасьева О.С. Методика расчёта тройных эвтектик по данным об элементах огранения систем низшей мерности / О.С. Афанасьева, Г.Ф. Егорова, О.Е. Моргунова, А.С. Трунин // Вестник Сам. гос. техн. унта. Сер. Физ.-мат. науки. 2007. № 1. С. 182 – 183.

4. Блиндин В.П. // Изв. СФХА. 1940. № 13. С.291.

5. Диогенов Г.Г., Кукис Л.М. // «Материалы I научно-технической конференции» (Ангарск. филиал Иркутск.

Политехнич. ин-та). Вып.4 Ангарск. изд. Иркутск политехнич. ин-та, 1970 С.205.

6. Ильясов И.И., Литвинов Ю.Г. // ЖНХ, 1972, т.17, С.1165.

7. Сергеева А.М., Семенова М.А. // «Научные труды» (Московск. авиационный ин-т) Вып. 319. М., изд. МАИ, 8. Трунин А.С. Дифференциальный термический анализ / А.В. Мешалкин, А.С. Трунин / Учебное пособие Самара: Самар. гос. техн. ун-т. Самарская областная государственная академия (Наяновой) 2010. – 9. Трунов В.К. Рентгенофазовый анализ. / В.К. Трунов, Л.М. Ковба. М.: МГУ, 1976. 232 с.

УДК 544.016. ИССЛЕДОВАНИЕ СИСТЕМЫ Na2SO4 – Li2SO4 МЕТОДОМ ДТА ФГБОУ ВПО «Самарский государственный технический университет», [email protected] Система Na2SO4–Li2SO4 – часть фазового комплекса Li,Na,K||F,Cl,Br,NO3,SO4. Анализ данных литературы показал наличие как минимум двух соединений инконгруэнтного плавления.

Проведенное методом ДТА исследование двухкомпонентной системы позволило подтвердить оба данных соединения.

Проанализированы данные литературы по плавкости неорганических солей [2], причем анализ включал не только экспериментальные, но и расчетные данные. Выявленная неоднозначность данных показала необходимость экспериментальной проверки системы Na2SO4–Li2SO4.

Результаты эксперимента планируется использовать в дальнейшем прогнозировании элементов фазового комплекса Li,Na,K||F,Cl,Br,NO3,SO4, частью которого является вышеприведенная двойная система. Для моделирования систем с числом компонентов выше 2, включающих двойную систему Na2SO4–Li2SO4 в качестве элемента огранения, необходимо установить составы нонвариантного равновесия, уточнить линии моновариантного равновесия для создания адекватных моделей фазовых комплексов различной мерности.

По данным литературы фазовая диаграмма исследуемой системы Na2SO4–Li2SO показала наличие двух соединений инконгруэнтного плавления: D1(Li2SO4·Na2SO4) и исследования методом дифференциального термического анализа (ДТА), в современном присутствия соединений. Подтверждение наличия соединений методом рентгенофазового анализа не проводилось. Нонвариантные точки ликвидуса системы Na2SO4–Li2SO4 приведены в табл. 2.

Таблица 1. Температуры кристаллизации составов системы Таблица 2. Нонвариантные составы ликвидуса системы Na2SO4 – Li2SO 1. Термические константы веществ: Таблицы принятых значений. Выпуск X. / Под ред. акад. Глушко, В.А.Медведева, Г.А.Бергмана и др. М.: АН СССР, 1981. 507 с.

2. Диаграммы плавкости солевых систем: Справочник. / Под ред. В.И. Посыпайко, Е.А. Алексеевой, Н.А.

Васиной. М.: Металлургия, 1977. Ч. II. Двойные системы с общим анионом. 304 с.

3. Трунин А.С. Дифференциальный термический анализ / Учебное пособие / Мешалкин А.В., Трунин А.С.

Самара: Самарский гостехуниверситет. Самарская областная академия Наяновой 2010. 32 с.

УДК 541.123.5:543.572. СТАБИЛЬНЫЕ ТЕТРАЭДРЫ LiF-KNO3-KBr-KF, LiF-KNO3-KBr-LiNO ЧЕТЫРЕХКОМПОНЕНТНОЙ ВЗАИМНОЙ СИСТЕМЫ Li,K || F,Br,NO ФГБОУ ВПО «Самарский государственный технический университет», E-mail: [email protected] Впервые методом дифференциального термического анализа изучены стабильные тетраэдеры LiF-KNO3-KBr-KF, LiF-KNO3-KBr-LiNO трехкомпонентной взаимной системы Li,K || F,Br,NO3.

Изучены фазовые диаграммы, выявлены составы и температуры плавления четверных нонвариантных точек.

многокомпонентных систем (МКС) и усовершенствование существующих технологий их получения, что тесно связано с изучением фазовых диаграмм МКС и химических превращений в них. Особый интерес представляют расплавы на основе нитратов и галогенидов щелочных металлов, что обусловлено широким спектром их применения в качестве электролитов для среднетемпературных химических источников тока (ХИТ), а также фазопереходных теплоаккумулирующих материалов (ФП ТАМ).

Целью настоящей работы стало изучение фазовых равновесий и химических взаимодействий в двух стабильных тетраэдрах LiF-KNO3-KBr-KF и LiF-KNO3-KBr-LiNO четырехкомпонентной взаимной системы Li,K || F,Br,NO3.

На первом этапе исследования проведено теоретическое разбиение фазового комплекса системы Li,K || F,Br,NO3 с применением теории графов [1]. Разбиение показало, что призма составов разбивается двумя стабильными треугольниками на три симплекса – стабильные тетраэдры.

Изучение фазовых равновесий в стабильных тетраэдрах LiF-KNO3-KBr-KF и LiF-KNO3KBr-LiNO3. проведено с использованием дифференциального сканирующего калориметра (ДСК) [2] в платиновых микротиглях с использованием в качестве датчика температуры свежепрокаленный Al2O3 «хч». Скорость нагрева и охлаждения образцов составляла 8... К/мин. Система исследованна в интервале температур от 50 до 450 С. Все составы выражены в мольных процентах, а температуры – в градусах Цельсия. Масса навесок 0.1 г (точность взвешивания ± 0.0002 г). Исходные реактивы квалификаций "хч" (KNO3, LiNO3), "чда" (KF, LiF) и "ч" (KBr) были предварительно обезвожены. Данные по фазовым превращениям индивидуальных веществ взяты из [3, 4].

Стабильный тетраэдр LiF-KNO3-KBr-KF. Данный стабильный тетраэдр образован следующими системами: секущим треугольником LiF – KNO3 – KBr, трехкомпонентной системой с общим катионом KF – KNO3 – KBr и стабильными элементами KF – KBr – LiF, KF – KNO3 – LiF соответствующих им взаимных систем Li,K || F,Br и Li,K || F,NO3. На рис. приведена развертка и эскиз объемов кристаллизации стабильного тетраэдра LiF-KNO3-KBrKF четырехкомпонентной взаимной системы Li,K || F,Br,NO3, на которую были нанесены данные по двухкомпонентным, квазидвойным и квазитройным элементам огранения. Как видно из рис. 1, все бинарные и тройные системы характеризуются эвтектическим типом плавления. Стабильный треугольник KF – LiBr – KBr отмечен наличием области расслоения, распространяющейся от квазибинарной стороны LiF – KBr к вершине KF.

Рис. 1. Развертка и эскиз объемов кристаллизации стабильного тетраэдра LiF-KNO3-KBr-KF четырехкомпонентной взаимной системы Li,K || F,Br,NO Для нахождения и определения характеристик четверной эвтектически в стабильном тетраэдре LiF-KNO3-KBr-KF была выбрана самая низкоплавкая тройная эвтектика, принадлежащая стабильному треугольнику LiF – KNO3 – KF, к составу которой постепенно добавляли бромид калия. При добавлении 0,98% KBr на термограмме зафиксирован один эффекта, отвечающий четверной нонвариантной эвтекики, температура и состав плавления которой соответственно равны: LiF – 2.0 %, KNO3 – 84.28 % KBr – 0.98 %, KF – 12.74 % с температурой плавления 280 оС.

Стабильный тетраэдр LiF-KNO3-KBr-LiNO3. Данный стабильный тетраэдр образован следующими системами: секущими треугольниками LiF – LiNO3 – KBr и LiF – KNO3 – KBr, стабильными элементами LiNO3 – KNO3 – KBr и LiNO3 – KNO3 – LiF соответствующих им взаимных систем Li,K || Br,NO3 и Li,K || F,NO3. На рис. 2 приведена развертка стабильного тетраэдра LiF-KNO3-KBr-LiNO3 четырехкомпонентной взаимной системы Li,K || F,Br,NO3, на которую были нанесены данные по двухкомпонентным, квазидвойным и квазитройным элементам огранения.

Рис. 2. Развертка стабильного тетраэдра LiF-KNO3-KBr-LiNO3 четырехкомпонентной В целях нахождения и определения характеристик точек нонвариантных равновесий, а также установления вида взаимодействия компонентов в стабильном тетраэдре в объеме фторида лития была выбрана самая низкоплавкая тройная эвтектика, принадлежащая стабильному треугольнику LiNO3 – KNO3 – LiF, к составу которой постепенно добавляли бромид калия. При добавлении 2% KBr на термограмме зафиксировано наличие одного эффекта, отвечающего кристаллизации четверной нонвариантной точки, температура и состав плавления которой соответственно равны: E2 102 оС, состав LiF – 7,35 %, LiNO3 – 43,12 %, KBr – 2,0 %, KNO3 – 47,53 %. Эвтектическому пику на термограмме всегда соответствовала постоянная температура 102 оС и ровная площадка на температурной кривой, что свидетельствует о протекании нонвариантного процесса.

1. Оре О. Теория графов. М.: Наука. Гл. ред. физ.-мат. лит, 1980. 336 с.

2. Хемменгер В., Хене Г. Калориметрия. Теория и практика: Пер. с англ. М.: Химия, 1990. Пер. изд.:

ФРГ, 1984. с.176.

3. Глушко В.П. Термические константы веществ Справочник. М.: ВИНИТИ. 1981 Вып. X, Ч.1. 300 с.

4. Глушко В.П. Термические константы веществ Справочник. М.: ВИНИТИ. 1981 Вып. X, Ч.2. 441 с.

Abstracts of The 10th International Kurnakov Conference In PhysicalChemical Analysis

REGULARITIES OF THE PHASE EQUILIBRIA IN SULFIDES, SELENIDES,

FLUORSULFIDES OF THE RARE EARTH ELEMENTS

Tyumen State University, [email protected], [email protected] The regularities of phase equilibria in systems MnS-Ln 2S3 and FeS-Ln2S3 (Ln = La-Lu) considered from the point of view of the theory of acid-base interactions. The formula for calculating the acidity simple sulfides are offered, composed scale relative acidity of 3d-(Mn, Fe, Sc) and 4f-(La-Lu) elements.

ANALYSIS OF TEXTURE FOR HETEROPHASE METAL SYSTEM

V.Y. Aryshensky, F.V. Grechnikov, 1A.F. Grechnikova, V.A. Mikheev Samara State Aerospace University named after academician S.P. Korolyov (National Research University), These developments are directed to the study of the phase formation of the composition, structure and texture of the sheet material rolled aluminum alloys with the characteristics of a multicomponent metallic texture heterophasic system.

CRITICAL PHENOMENA IN BINARY AND TERNARY SYSTEMS WITH

COMPONENTS OF DIFFERENT VOLATILITY

Kurnakov Institute of General and Inorganic Chemistry RAS, Moscow, [email protected] The main types of critical phenomena established in one-, two- and three-component systems are observed and discussed. Special attention and the results of experimental studies of critical phenomena in hydrothermal water-salt systems will be represented for illustration the phase behavior of binary and ternary mixtures in the vicinity of critical point of volatile component (water).

PHASE TRANSFORMATIONS IN ORTHOPHOSPHATES AND ORTHONIOBATES

OF LANTHANIDES

Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Results of phase transformations in lanthanides orthophosphates and orthoniobates investigations carried out by thermal analysis, calorimetry and X-ray studies presented. Dependence of phase transformations parameters (temperatures and heats) in nano- and micro-sized orthophosphates associated with thermal dehydration of rhabdophanite structure compounds and subsequent irreversible phase transition rhabdophanite-monazite from the particle size was found. Earlier unknown phase transitions in terbium and dysprosium orthophosphates were observed at high temperatures. It was shown that structural phase transitions in lanthanide orthoniobates proceeds in the wide temperature range. It explains the practical absence of thermal effects at DSC curves.

RESEARCH OF THE SERIES SYSTEMS CONTAINED n-ALCANES, CYCLANES

AND ARENAS

The technique of prediction, calculation and study of two-and three-component systems with nalkanes, cyclanes, arenas, as well as carbon tetrachloride and tetrachlorethylene is provided.

THE USE OF PHYSICAL-CHEMICAL ANALYSIS TO SOLVE CHEMICAL AND

CHEMICAL ENGINEERING PROBLEMS

Kurnakov Institute of General and Inorganic Chemistry of Russian Academia of Sciences, [email protected] The report presents the results of research carried out in the laboratory of Chemistry and Technology of natural salts, Kurnakov Institute of General and Inorganic Chemistry of Russian Academia of Sciences associated with the development of anti-icing agents, as well as to the improvement of some halurgical processes.

HETEROGENEOUS EQUILIBRIUMS IN SYSTEMS METAL-OXYGEN

-HALOGEN. FUNDAMENTAL BASIS OF METHOD HALOGENATION IN

TECHNOLOGY OF RAE METALS AND MATERIALS BASED ON ONES

Lomonosov Moscow State University of Fine Chemical Technologies, [email protected] The results heterogenius equilibriums in metal-oxygen-halogen systems investigations were generilazed (summarized). It’s shown that analysis of P-T-x diagrams of binary systems and quasybinar cuts of ternary systems let to correctly describe the technological processes. Some details of phase equilibriums with phases of wide areas of homogeneity are considered.

CRITERIA OF THE SUBSTANCE INHOMOGENEITY IN PHYSICOCHEMICAL

ANALYSIS

Department of Chemistry, Moscow State University, [email protected] The concepts of a substance, phase, component are discussed. Attention is paid to nonstoichiometry and defect composition. A quantitative estimate of the degree of heterogeneity can be based on the following three types of distributions:

(1) distribution of structure elements in some measurable volume, (2) distribution of these volumes in the crystal, and (3) distribution of measurement data and properties of the solid phase.

elements in the i th microvolume the solid substance can be called homogeneous. If there is an i value at which this inequality is invalid, the solid phase should be considered to be heterogeneous

STRUCTURAL COORDINATE IN PHUSICO-CHEMICAL ANALYSIS OF

SOLUTIONS AND MATERIAL PRODUCTION

Institute of General and Inorganic Chemistry, NS Kurnakov of Sciences, Moscow, [email protected] Concentration dependencies of properties of aqueous electrolyte and nonelectrolyte solutions in a wide range of concentrations are considered on the basis of structural approach and hydration dielectric parameters for different systems. The calculated static dielectric constants, times and activation parameters of dielectric relaxation can be used in such analysis. It is shown that the molecular-kinetic hydration and structural changes of water determine the homo- and heterogeneous equilibria and the processes of substance subdivision or the formation of glasses.

EFFECTIVE METHODS OF PHASE EQUILIBRIA INVESTIGATION IN

MULTICOMPONENT WATER–SALTS SYSTEMS

The most effective methods of phase equilibria investigation in multicomponent water-salts systems without isolation of solid phases are described. The suggested methods can be used to study systems with any number of components and of varying difficulty.

PHASE DIAGRAMS OF FLUORIDE SYSTEMS

A.M.Prokhorov General Physics Institute, Moscow, [email protected] Fluoride systems are important sources of photonics and electronics materials, and suitable model objects also. Pyrohydrolysis of fluorides make more complicated study of phase diagram. Such phenomena as isomorphism, nonstoichiometry, retrograde solubility, formation of maxima and saddle-type points on the melting curves and surfaces of solid solutions, decomposition and ordering of solid solutions are observed in fluoride systems phase diagrams.

TECHNIQUE FOR CALCULATING THE AMOUNT AND COMPOSITION OF

MELT, FORMED IN CERAMIC BODY DURING FIRING, WITH THE USE OF KNOWN

TEMPERATURE-COMPOSITION DIAGRAMS FOR ALUMINA-SILICATE SYSTEMS

Samara State University of Architecture and Civil Engineering, [email protected] A technique for calculating the amount and composition of melt, as well as the composition of nondissolved residue formed in the ceramic batches during firing has been developed. The method is based on using the known ternary phase temperature-composition diagrams of alumina-silicate systems and the principle of additivity of the processes taking place due to inability to achieve an equilibrium during a shortterm firing of heterogeneous raw materials (which is characteristic for the production of ceramic building materials).

THE TOPOLOGY OF THE PHASE DIAGRAM TERNARY CONDENSED SYSTEMS

SALT – BINARY SOLVENT WITH SALTING-IN – SALTING-OUT

Saratov State University named after N.G.Chernyshevsky, Saratov, Russia, [email protected] By the topological transformation method, a scheme of transformation of the phase diagrams of the ternary salt–binary solvent systems with salting-in – salting-out has been deduced at temperature variations for cases when a constituent binary liquid system is characterized by LCST, UCST, a closed binodal curve or does not separate within the whole temperature range of its liquid state. Eight of the thirteen proposed versions of this scheme were confirmed, completely or partially, by our study of phase equilibria and critical phenomena in 27 ternary systems within a wide temperature range.

THE METHOD OF CRITICAL TEMPERATURES PREDICTION IN BINARY

ALIPHATIC ALCOHOLS MIXTURES

Methods of calculation of critical temperatures of binary mixes formed by aliphatic alcohols are considered. Possibility of linearization of concentration dependence of critical temperatures of the considered systems that gives the chance to predict property on the basis of data on mix components is shown.

THE KURNAKOV DOCTRINE AND NONEQUILIBRIUM THERMODYNAMICS

Al-Farabi Kazakh National University, 1K.Satpaev Kazakh National Technical University, Almaty Triangulation systems to determine the bifurcation point, to describe the synergetic processes, calculate the driving force ofthe reaction -chemical affinity,providemechanisms forthe exchange reaction, the conversionof dehydration andpolycondensation, hydration.

DIFFERENTIAL THERMAL ANALYSIS AS MEANS OF DIAGNOSTICS OF EPIGENESIS

OF CARBONATE ROCKS

Calcite widespread carbonate mineral. Deficiency of structure of calcite changes over a wide range.

Parameters of thermal dissociation of calcite testify to deficiency and conditions of formation of a mineral.

THE TOPOLOGICAL ANALYSIS OF FACETTING ELEMENTS OF SYSTEM

For the first time about use of the program complex "Differentiation of Multicomponent Systems on the COMPUTER" differentiation of five-component mutual system Li, Na, K, Ba//F, WO 4 during which it is revealed five internal secants and stable complexes of this system is carried out, feasibility and which legitimacy is confirmed with the rentgenophase analysis (RPA).

IONIC EQUILIBRIA IN SOLUTIONS OF WEAK BASES

Ural Federal University named after the first President of Russia B.N. Yeltsin The procedure of chemical deposition of hydrated oxides of metals by organic substances – Brensted bases was investigated. The method of calculation of the ion composition of the solution and the influence of organic reagents on the hydrolysis of metal cations was developed.

EXCHANGE REACTIONS IN FOUR-COMPONENT

VZAIMNYKHSOLEVS SYSTEMS WITH TWO AND MORE DOUBLECONNECTIONS

Branch of the joint institute of high temperatures of the Russian Academy of Sciences, [email protected] In practice of the physical and chemical analysis of multicomponent mutual salt systems, at identification of exchange processes in four-component mutual systems are limited to the description of chemical reactions of conversion corresponding to lines, as a rule, three reagents and three products, i.e. one reaction participate in them on all line of conversion with change of ratios of components. It is established that in systems with connections and internal secants there are figurative points to which there correspond single reactions from five components. The reactions corresponding to crossings of metastable and stable tetrahedrons with participation to eight components are revealed and such reactions are characteristic for all volume of crossing.

METHOD OF IDENTIFICATION OF ION-EXCHANGE PROCESSES IN THE

TREKHKORMPONENTNYKH MUTUAL SALT SYSTEMS WITH CONNECTIONS

Branch of the joint institute of high temperatures of the Russian Academy of Sciences, 1Dagestan State At identification of exchange processes in three-component mutual systems are limited to identification of the equations of chemical reactions of conversion corresponding to points. Two reagents and two products participate in these reactions. By the researches given by us it is established that in threecomponent mutual systems with connections besides points of full conversion lines and the planes of conversion take place. The method allowing to reveal all set of the equations of chemical reactions corresponding to mutual systems with connections is developed.

3D COMPUTER MODELS OF Mo-Zr-V, Ti-C-V, Ti-Ir-Ru T-x-y DIAGRAMS WITH

THREE-PHASE REACTION TYPE CHANGING

Institute of Physical Materials Science, SB RAS, [email protected] Temperature and concentration borders of discovered experimentally effects of three-phase reactions type changing in systems Mo-Zr-V, Ti-C-V, Ti-Ir-Ru had been determined with T-x-y diagrams 3D computer models. Such kind effects had been founded also in other three-phase regions of systems Ti-C-V and Ti-IrRu.

INSTRUMENTAL SUPPORT OPTIMIZATION OF GAS CHROMATOGRAPHIC

ANALYSIS

In order to the size of the GC reduce and the GC analysis speed increase proposed new versions of its main components: capillary gas adsorption column for the separation of organic and inorganic volatile compounds and methods for their production, fast-response thermal conductivity detector, as well as new designs dosing gas samples into the separation column.

CONDITION COMPLEX OF TOPOLGY CONSTITUHION DIAGRAMS FOR

ANALYSIS IDS DENSITY SUBSTANSES

Samara State University of Architecture and Civil Engineering,, gen_dor @ mail.ru Condition complex – topology difference for computation entropy at bound on variable irreversibility heating transformation substances, definable relatively discrete temperature axis.

THERMAL ANALYSIS AND CALORIMETRY

Samara State University of Architecture and Civil Engineering, [email protected] The paper gives a practical comparison of main advantages and disadvantages of the DTA and DSC devices when solving key problems of thermal analysis based on the fundamental analysis of the phenomena occurring in the sample during its transformation.

ON DISSIPATION OF SOLID SOLUTIONS IN SIMPLE TERNARY WATER-SALT

Investigation of phase equilibria by optimized method of sections in system of NaCl – KCl – NH 4Cl – H2O at 50°C has shown that solid solutions of limited series of (K,NH 4)Cl и (NH4,K)Cl are dissipated on curve of monovariant equlibrium with increasing content of NaCl.And in nonvariant state there are triple saturated solution in equilibrium with individual salts of NaCl, KCl and NH4Cl.

THERMODYNAMIC PROPERTIES OF CONDENSED PHASES Ga-Au: THE RESULT OF

THE EQUILIBRIUM GAILLIUM IODIDES VAPOR PRESSURE INVESTIGATION

A.Yu. Zavrazhnov, A.V. Kosyakov, S.S. Berezin, D.A. Machnev, A.V. Sergeeva A novel way allows one to obtain a thermodynamic data with the use of auxiliary component method is elaborated and tested. This way is based on the vapor spectrophotometric analysis in the very conditions of high temperature experiment. The data, referred to the equilibrium of pure gallium or Au-Ga liquid solutions with gallium iodides is under discussion.

SIMULATINON OF BONE TISSUE INTERACTION WITH CARBON NANOTUBES

IN BIOMINERALISOTION PROCESSES (NANOCOMPOSITES CALCIUM

HYDROXYAPATITE/CARBON NANOTUBE)

Kurnakov institute of gegeral and anorganic chemistry RAS, Moscow, RF, [email protected] In conditions of biomineralization simulation synthesized composition materials (CM) on the base of calcium hydroxyapatite Са10(РО4)6(ОН)2 (HA) and multiwalled carbon nanotubes (CNT), made physical and chemical identifications and assessment of CM HA/CNT solubility properties in vitro.

MATRIXES OF IONIC INDEXES FOR FORMATION OF EXCHANGE PROCESSES

IN MUTUAL SYSTEMS WITH INTERNAL SECANTS

Dagestan State University, Branch of the joint institute of high temperatures of the Russian Academy of Matrixes of ionic indexes allowing to form the left and right parts of the exchange equations of chemical reactions and to reveal internal secants of stable and metastable complexes of mutual salt systems with cyclic trees of phases are offered.

ANALYTICAL RELIABILITY OF ELECTROCHEMICAL METHODS

The St.-Petersburg state institute of technology (technical university), [email protected] System theoretical and experimental problems of electrochemical methods of the analysis real (opened and nonequilibrium) solutions of electrolytes and electrode processes in comparison of traditional and modern views are analyzed.

HEURISTIC ROLE OF PRESSURE PULSES AFFECTING ON

ELECTROCHEMICAL PROCESSES

FSBIHVT «The St.-Petersburg state institute of technology (technical university)», [email protected] The application of the method of pressure-pulses regulation on physical and chemical processes in the nonequilibrium condensed media is shown, and real results of the appendix of this method are resulted in the analysis of kinetics for the purpose of definition of mechanisms of multirouting electrochemical transformations on an example of hromato-sulphatic galvanic chromium plating.

(EXCEL + ACAD)-TECHNOLOGY TO RESEARCH T-X-Y-Z PHASE DIAGRAMS

M. V. Lamueva1, B. V. Mokhosoev2, M. D. Parphenova3, Е. R. Urmakshinova IPMS SB RAS, [email protected], 2Buryat State University, 3East-Siberian State Academy of Culture and The graphical package AutoCAD and Excel spreadsheet were used to reproduce the manual graphics of D. A. Petrov for the additive contour of hypersurfaces in the system A-B-C-D with six eutectic gaps of solubility.

OBJECT-ORIENTED DESIGN OF MULTICOMPONENT SYSTEMS

By means of object-oriented programming the computer models of T-x-y diagram with the incongruently melting compounds were built.

TECHNOLOGY OF Т-х-у AND Т-х-у-z DIAGRAMS ASSEMBLAGE FOR THE

TERNARY AND QUATERNARY SYSTEMS

Institute of Physical Materials Science, SB RAS, [email protected], 2Buryat State University The construction of phase diagrams computer models of different topological types permits to solve many tasks of materials science and chemical technologies and the simulation of phase diagrams already became one of the applied problems of mathematics. The elaboration of computer model permits not only to represent and interprets the geometry of investigated phase diagram, but also to do the detailed research for additional data obtaining.

DIAGRAM: COMPOSITON OF AQUEOUS SALT SOLUTIONS – RADIATION IN

MILLIMETER SPECTRAL RANGE

Kurnakov Institute of General and Inorganic Chemistry, RAS, Moscow, [email protected], [email protected] A new method of the experimental research and the concentration determination of salt solutions is offered on the basis of radiation parameters. These characteristics are determined with the help of highsensitivity radiometers in a millimeter range of waves. The results of the experimental research of electromagnetic radiation of water and aqueous solutions of alkaline metals, ammonium and magnesium chlorides in the millimeter spectral range (61,2 GHz) at 298 K are presented. It is shown that the radiation of potassium, rubidium, caesium, ammonium chloride solutions is more and the radiation of lithium and magnesium chloride solutions is less in comparison with water.

THE THERMAL ANALISIS (DTA) INSTALLATION OF NEW GENERATION

A.S. Markov, P.V. Kosinsky, E.A.Andreev, K.D. Surinsky, A.S. Trunin, O.E. Morgunova, E.A. Katasonova Samara State Technical University, [email protected], [email protected] DTA is one of the most important investigating methods of phase equilibrium. Last years the principles of DTA engines development of new generation were essentially changed to the good. It is connected not only to microelectronics progress, use of modern computer technologies, but to new high-temperature heating alloys which fekhral` is referred to. We developed, tested and put into operation a new DTA engine.

FRACTAL WAVELET ANALYSIS INFLUENCE OF POROUS STRUCTURE

NANOCOMPOSITES

Russian Chemical Technology University. Mendeleev, [email protected] Fractal-wavelet analysis was carried out for three-micro-images of x-morphology of the composite samples SiC/Y3Al5O12, starting powder sintered at high temperature and pressure. Developed a computer model to calculate the fractal dimension of photomicrographs of nanocomposites, which are defined by the fractal dimension of the morphology of silicon carbide. Determine the number of characteristics of the porous structure of the nanocomposite, including pore size distribution, average pore size, as well as an original search algorithm "through" pores.

METODOLOGY FOR AUTOMATED COMPREHENSIVE STUDY OF

MULTICOMPONENT SYSTEMS BY SIMULATION AND USING SPECIALIZED

SOFTWARE

Samara State Aerospace University named after academician S.P. Korolyov, The methodology of automated comprehensive study of multicomponent systems is a universal algorithm of complex automated research using an automated workstation chemist.

Application of the methodology in practice, allow to the get the whole information about the phase multicomponent complexes with a minimum investment of time and money.

MODELING OF PHASE DIAGRAMS OF THE "COMPOSITION-CURRENT"

THREE-COMPONENT HETEROGENEOUS ALLOYS OF CADMIUM-TIN-BISMUTH

Samara State Technical University, [email protected], [email protected] The equations for modelling "composition-current" phase diagram of the three-component cadmiumtin-bismuth alloy are proposed. Three-dimensional model is performed.

TECHNIQUE OF THE DESCRIPTION OF CHARACTERISTICS OF LOWMELTING STRUCTURES OF A NUMBER OF NaHal - MHal (M – K, Rb, Cs; Hal – Cl-,

AND FORECASTING OF CHARACTERISTICS OF THE EUTECTIC

In an analytical form changes of temperatures and structures of eutectics of double systems of a number of NaHal - MHal (M – K, Rb, Cs, Hal – Cl-, Br-, I-) depending on kristallokhimichesky, thermal, thermodynamic and power characteristics of ions of M+ and halogenides are presented. Data of calculation of the characteristic of an eutectic are provided in systems NaHal – FrHal.

THE STABILIZATION OF SPIN SKYRMIONS IN FERROMAGNETIC BY

DZALOSHINSKII-MORIA AND DIPOLE-DIPOLE INTERACTIONS

Institute of General and Inorganic Chemistry RAS, Moscow, [email protected] It has calculated the vortex-skyrmion in antiferromagnetic with the stabilization by DzyaloshinskiiMoria and dipole-dipole interactions.

St. PETERSBURG SOURCES OF SCIENCES OF PROFESSOR BERGMAN

Samara State Technical University, [email protected], [email protected] Honoured master of science, the doctor of chemical sciences prof. Bergman A.G. is a pupil of academician Kurnakov N.S., the founder of physical-chemical analysis, began to work with him in St. Petersburg, then in Moscow, where he got the D.I. Mendeleev`s medal for his work on topology of thribble mutual systems. The most active Bergman`s work was in Rostov-on-Don. In whole, the professor prepared 120 candidates and 20 doctors of sciences. He directed scientists in Rostov-on-Don educational establishments, in Caucasus and Middle Asia republics. Visual-polythermal analysis allowed to investigate in wide range of temperatures with a number of components till 10.

THE DEVELOPMENT OF PHYSICAL CHEMICAL ANALYSIS OF MULTI

COMPONENTAL SYSTEMS IN SAMARA

Samara State Technical University, [email protected], [email protected] The main direction of physical and chemical analysis in Samara is the development and application of new methods of phase complex multicomponent systems research. Originate the comprehensive methodology for the multicomponent systems research, develop methods of experimental analysis, modeling and calculation of phase equilibria, to create a modern equipment for experiments.

AUTOMIZED COMPLEX OF DIFFERENTIATION AND BUILDING MULTICOMPONENT SYSTEMS PHASE SINGLE BLOCKS TREE

Samara State Technical University, [email protected], [email protected] Automized complex of differentiation and building multi-component systems phase single blocks tree was made. It includes a data base, program of a building scan-outs and phase tree of multi-component systems with all kinds of chemical interaction, including solid solutions.

THREE-DIMENSIONAL POLYTHERMAL SECTIONS OF T-X-Y-Z DIAGRAM OF

THE QUATERNARY EUTECTIC SYSTEM WITHOUT SOLIDPHASE SOLUBILITY

Institute of physical materials science of the Siberian Branch of the RAS, [email protected] The D.A. Petrov’s graphics was added by the crossing of hypersurfaces on three-dimensional vertical sections. The diagram with degeneration of solvus and solidus hypersurfaces consists of 4 hypersurfaces of liquidus, 12 ruled hypersurfaces with forming segment of invariant two-phase equilibria L+I and 12 ruled hypersurfaces with forming simplex of invariant equilibria L+I+J (which bound 4 two-phase regions L+I, three-phase regions L+I+J and 4 four-phase regions L+I+J+K) is considered. The hypoeutectic sections given parallel to two crossing edges of tetrahedron and the sections given parallel to the tetrahedron sides and arranged within binary eutectics are analyzed. The high quality of D.A. Petrov’s graphics is confirmed and the directions for upgrading of software "Constructor Phase Diagram" are defined.

ON THE STATUS OF PHYSICAL AND CHEMICAL ANALYSIS OF MODERN

CHEMICAL SCIENCES

This paper presents a critical analysis of the problem of the status of physical and chemical analysis in the chemical sciences in historical terms, and concludes that it is a special separate section study of the chemical processes (third conceptual framework of Chemistry) - Physical Chemistry.

STATE OF ORIENTATION EXCHANGE REACTIONS IN IONIC MELTS AND

SOME THOUGHTS ON ITS FUTURE DEVELOPMENT

In this paper, taking into account the direction of the problem of the exchange reactions in ionic melts, and based on the analysis and synthesis of the thermodynamic and physical meaning of the concept of "temperature" formulated rules shift the equilibrium in the absence of the solvent, which are in good agreement with calculations of the thermodynamics of the processes involved.

EXPERIMENTAL REPRODUCTION OF IDEAS KURNAKOV-BERGMAN ON

TRIPLE SINGULAR ONE-TO-SYSTEM AND WAYS OF PRACTICAL APPLICATION OF

RESERCH RESULTS

On the basis of thermal analysis systems Me',Me''//NO 3,Mo(W)O4 (Me' – Li, Na, K, Rb, Cs; Me'' – Ca, Sr, Ba) are discussed questions experimental reproduction ideas Kurnakov - Bergman of triple singular reciprocal systems. Along with this work is given along with this as the main focus of possible lines of data applications on systems Me',Me'//NO3,Mo(W)O4.

CLASSIFICATION AND THE SYSTEMATIZATION OF HALIDES OF GENERAL

COMPOSITION ABX

FGBOU VPO «Tyumen state university», e-mail [email protected] The annotation: Necessity of classification of three-element ion halogenides on type simple (complex) - complicated (dual) at systematisation of structures by category symmetry is demonstrated. The eligible criterion of classification is proposed: = (AX) - (ВХ). Adequacy of the given approach is verified by dimensional structure maps and the maps builted with use of the generalised power characteristics.

PHYSICO-CHEMICAL INVESTIGATON OF Ag2Se-GeSe2-SnSe2 SYSTEM Phase equilibriums in the Ag 2Se-GeSe2-SnSe2 system were investigated using DTA, XRD techniques and measurement of emf of chains concerning silver electrode with solid electrolyte Ag 4RbI5. It is shown that the quasibinary cut Ag8GeSe6-Ag8SnSe6 characterized by the formation of continuous series of solid solutions between two (low-temperature orthorhombic and high-temperature cubic) modification of the initial compounds. The isothermal section of the phase diagram at 300K is constructed.

SYNTHESIS, GROWTH OD SINGLE-CRYSTALS AND PHYSICAL-CHEMICAL

PROPERTIES OF COMPOUNDS LnMeTe2 (Ln = Sm, Eu, Yb; Me = Sn, Pb) TYPE O.M. Aliyev, D.S. Ajdarova, S.T. Bayramova, V.M. Rahimova, E.S. Kuli-zade Institute of Chemical Problems named after acad. M.F.Nagiyev NAS of Azerbaijan, Growth regime of single-crystals of triple compounds LnMeTe 2 (Ln = Sm, Eu, Yb; Me = Sn, Pb) type has been developed. Physical-chemical and some physical properties of grown single-crystals have been studied.

Institute of Chemical Problems named after akad. M.F.Nagiyev of the National Academy of Sciences of Azerbaijan, 2 Institute of Physics named after G.B.Abdullayev of National Academy of Sciences of The In3Sb2S3Te3- InTe system was studied using differential thermal analysis (DTA), powder X-ray diffraction, microstructure observation, and microhardness and density measurements. A phase diagram of the title system was constructed. This system is a quasibinary join of the In,SbS,Te quaternary system. The system has a eutectic, which contains 40 mol % InTe and melts at 480°C. The In 3Sb2S3Te3-base solid solution in the system extends to 10 mol % InTe, and InTe- based solid solution extends to 2 mol % In3Sb2S3Te3..

T-x-y diagram of quasiternary system YbTe-Sb2Te3-Bi2Te3, referring to a type with univariant eutectic has been built. Specified in the literature compound YbSb 2Te4 not confirmed. The formation of -solid solutions with the structure tetradymite, homogeneity region which has the form of a continuous band width of 10-15 mol% YbTe along the side of Sb2Te3-Bi2Te3.

RESEARCH OF A NEW HEAT-RESISTANT AUSTENITIC ALLOY WITH AN

IMPROVED COMBINATION OF PROPERTIES

Abstract: A heat-resistant austenitic alloy has been offered, and its operational parameters have been defined. The practical consideration has shown that its microstructure consists of a solid solution, niobium and eutectic carbides. Liquidus and solidus curves temperature as well as the temperature of eutectic crystallization and dissolution of niobium carbides has been determined. It has been found that the long-term strength of the new heat-resistant alloy is much higher than the strength of any known steels, thanks to its optimal composition and the presence of micro-additives.

SOLID SOLUTIONS WITH THE STRUCTURE OF Tl5Te3 IN THE SYSTEM Tl2TeTlCl-TlBr Institute of Chemical Problems of NAS Azerbaijan, 1Baku State University, [email protected] The Tl2Te-TlCl-TlBr system was investigated using the DTA and XRD analyses, as well as microhardness and EMF measurements. The polythermal section Tl5Te2Cl-Tl5Te2Br and isothermal section of the phase diagram at 300K were constructed. It was established, that the -phase of variable composition having a large homogeneity field forms in the system. The homogeneity field of -phase penetrates the Tl2Te–Tl5Te2Cl–Tl5Te2Br subsystem and occupies its large part.

Ganja State University, 1Baku State University, [email protected] For the first time by means of DTA and XRD techniques the complete T-x-y diagram of the Cu-Pb-Se system is constructed. Ternary compounds were not found. The cut Cu 2Se-PbSe is quasi-binary of eutectictype. Liquidus consists of the fields of primary crystallization of phases based on Cu, Cu 2Se and PbSe. There are three areas of immiscibility in the liquid state.

PHASE EQUILIBRIA IN THE TERNARI SYSTEM

FGBOU VPO «Samara state technical university», [email protected] The phase equilibrium in the ternary system NaF-Na2CrO4-Na2WO4 has been studied by the DTA method. The malting temperature and concentration of outcropping point have been determined.

PHASE EQUILIBRIUMS IN MUTUAL SYSTEM 3Cu2S+Cu2SnSе33Cu2Se+Cu2SnS Baku State University, 1Ganja State University, [email protected] The T-x diagram of quasi-binary system Cu 2SnS3-Cu2SnSe3 and isothermal section at 950K of the phase diagram of the mutual system 3Cu 2S+Cu2SnSe3 3Cu2Se+Cu2SnS3 are constructed using DTA and XRD methods. It is established that the system Cu 2SnS3-Cu2SnSe3 is quasibinary and characterized by the formation of a continuous series of high temperature solid solutions with cubic structure.

DIELECTRIC PROPERTIES OF SOLUTIONS OF QUATERNARY SYSTEMS

Institute of General and Inorganic Chemistry, NS Kurnakov of Sciences, Moscow, It is presented the measurements of conductivity and microwave dielectric properties of aqueous solutions of quaternary system Y(HCOO) 3 - Ba(HCOO)2 - Cu(HCOO)2 - H2O with a ratio of salt components 1 : 2 : 3 with a total salt concentration of 0,3 mol.% to 18,6 mol.% at frequencies of 13, 16, 19.25 and GHz at 298 K. The static dielectric constants, times and activation parameters of the dielectric relaxation are calculated. It is shown that the processes of association and ion-ion interactions in aqueous formate solutions lead up to the formation of low-temperature glasses.

STRUCTURE OF ALLOYS IN THE ROW OF DISCONTINUES SOLID SOLUTIONS

Lomonosov Moscow State University, Chemistry Department, Moscow, Russia The structures of alloys of continuous solid solutions formed TaV 2 cubic Laves phase and Laves phase TaCr2, which consists of two structures (cubic and hexagonal), and its change in the annealing process at 1375 K have been investigated. The most stable polytype TaCr 2 Laves phase at 1375 K is a polytype with a cubic structure.

STUDY OF TRIPLE SYSTEM Nd2S3-Ga2S3-EuS BY THE SIZE OF EuGa2S4-NdGaS I.B. Bakhtiyarli, R.D. Kurbanli, R.I. Kerimov, A.N. Mammadov, E.N. Ismayilova Institute of Chemical Problems named after acad. M.F. Nagiyev of NAS of Azerbaijan On the basis of the whole results of physical-chemical analysis the interaction between EuGa 2S4 and NdGaS3 was studied. Phase diagram of the system EuGa 2S4-NdGaS3, which is a partial quasi-binary section of the system Nd2S3-Ga2S3-EuS, was constructed. A congruent melting compound of the system EuNdGа3S7, which melts at 1390 K, was found out. Standard thermodynamic functions of formation of the produced complex compounds were calculated.

NEW TYPE OF TERNARY RECIPROCAL SYSTEM

Institute of Geology and Mineralogy SB RAS, Novosibirsk, Russia, e-mail: [email protected] *General Physics Institute Russian Academy of Science, Moscow, Russia, e-mail: [email protected] THE ANALYSIS OF THE TERNARY RECIPROAL SYSTEMS Na,K||Hal,ElO4 (Hal – FGBOU VPO «Samara state technical university», [email protected] The analysis of the ternary reciprocal systems Na,K||Hal,ElO 4 (Hal – F, Cl, Br, I, El – Cr, Mo, W) is carried out. The unexplored systems has been studied by the differential thermal analysis. The results of the prediction confirmed the experimental data.

THE INVESTIGATION OF TERNARY SYSTEM LiF-KCl-K2WO

FGBOU VPO «Samara state technical university», [email protected] The ternary system LiF-KCl-K2WO4 has been studied by the differential thermal analysis. The melting point and the contents of the components eutectic are carried out.

THE ANALYSIS OF THREE-COMPONENT RECIPROCAL SYSTEMS RANGE

In this work the range of three-component reciprocal systems Li,Me||F,CrO 4 (Me – K, Rb, Cs) is presented. A forecast of crystallized phase of uninvestigated system Li,Cs||F,CrO 4 was made on the bases of liquidus surfaces structure in two systems Li,K||F,CrO4 and Li,Rb||F,CrO4 of this range, investigated earlier.

And this forecast was also studied according to phase diagrams structure similarity of binary systems, belonging to systems of this range.

MODERN INTEGRAL-SCINTILOUS METHODS FOR LARGE SCALE

ANALYTICAL DETERMINATION OF PRECIOUS METALS IN ROCKS,ORES AND

Bronnitskaya geological and geochemical expedition FSUE «IMGRE», [email protected] Abstracts: For the purposes of improving the analytical services to the geological-prospecting and exploration works the Bronnitsa Geological-Geophysical expedition Analytical Centre evaluated and implemented certain assay complexes and analytical methods for determination of precious metal grades in geological samples using the chemical-spectral integral-scintillation method with photo-electric registration of the spectrum.

POLYHEDRATION OF PRISMATIC COMPLEXES BY TOPOLOGICAL RULES

Institute of Physical Materials Science, SB RAS, [email protected] New method for polyhedration of multicomponent systems is proposed. Deduced before correlations between initial number of polyhedron vertexes (including all compounds, which participate in polyhedration, and resulting number of simplexes) are used. The method makes possible to divide polyhedron into simplexes in difficult cases with inner points and inner diagonals competition.

PIVALATES OF REE: SYNTHESIS, STRUCTURE AND THERMAL BEHAVIOUR

A.V. Gavrikov, M. A. Bykov, A.B. Ilyukhin, I. G. Fomina, Zh. V. Dobrokhotova, A.V. Horoshilov, D.A.

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences Moscow, Russian Federation; e-mail: gavrikovandrey@rambler For structurally characterized dinuclear rare earth pivalate complexes Ln2(piv)6(Нpiv)6·Нpiv и Ln2(piv)6(Нpiv)6 (Нpiv – pivalic acid, Ln = Ce (1), Pr (2), Nd (3), Dy (4), Ho (5) and Er (6)) the temperature dependences of the heat capacity, Cp0(T), were measured by differential scanning calorimetry (DSC) in the temperature range from 133 K to 323 K. The Cp0(T) curves for the complexes show anomalies in the interval 268-283 K associated with an second-order phase transition.

GLASSFORMATION IN SYSTEMS Li2O-B2O3-Ln2O3 (Ln-La, Nd, Sm, Eu) Institute of Chemical Problems named after academician M.F.Nagiyev of NAS of Azerbaijan By methods of physical-chemical analysis triple system Li 2O-B2O3-Ln2O3 was studied, glass formation regions were determined and indicative diagrams were plotted.

Transparent glasses, which are prone to crystallization, were produced. It was established, that by increasing the serial number, the glass formation region grows.

STUDING OF AQUEOUS FLUOROPHOSPHATE TITANIUM SYSTEMS

I.V. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of Kola Fluoro- and oxo(hydroxo)fluorophosphate titanates (FPT), crystalline M 2TiF6 (M-K,Rb, Cs), K2Ti2O2(OH)F2PO4.2H2O and amorphous K3Ti4O(OH)F7(PO4)3.5H2O, Cs2Ti3O2F7PO4.6H2O, CsTi3O3F4PO4 3H2O have been isolated under mild conditions from solutions containing 2-17 wt% TiO 2, at the molar ratios of M/Ti = 1-4, F/Ti = 2-4 and PO 43-/Ti = 0.5-10.0. Nhe phases have been examined by using elemental, crystal optic, X-ray phase, and thermal analyses; and also by electronic microscopy. After annealing of FPT, a mixture of MTiOPO4 and TiO2 was formed.

ANALISIS OF THE GROWTH DYNAMICS OF SILICATE HYDRATE CALCIUM

NANOPARTICLES HYDRATED CEMENT COMPOSITION BY SMALL-ANGLE

NEUTRON SCATTERING

A.M. Gurjanov1, S.F. Korenkova1, V.M. Lebedev2, V.T. Lebedev2, U.V.Sidorenko Samara State University of Architecture and Civil Engineering, [email protected] Formation of cement structure in the process of hydration has been studied by small-angle neutron scattering (neutron wavelength = 0,3 nm). The distribution of silicate hydrate of calcium (C-S-H) nanoparticles has been received. Characteristics of C-S-H nanoparticles change have been obtained.

PHASE EQUILIBRIA IN THE STABLE PENTATOPE LiF-LiKMoO4-KCl-KBrK2MoO4 OF QUINARY RECIPROCAL SYSTEM Li,K||F,Cl,Br,MoO Samara State Technical University, [email protected] Phase equilibria in the stable pentatope LiF-LiKMoO 4-KCl-KBr-K2MoO4 of quinary reciprocal system Li,K||F,Cl,Br,MoO4 have been studied by the differential thermal analysis. On monovariant curve dip is formed with melting temperature 460°С and composition (equiv. %): LiF 5,7 %, LiKMoO 4 55,9 %, KCl 11, %, KBr 3,6 %, K2MoO4 23,5 %.

Samara State Technical University, [email protected] Abstract: phase equilibria in quaternary system K||F,Cl,Br,CrO 4 have been studied by the differential thermal analysis, volumes of crystallizable phases have been marked off.

STABLE PENTATOP'S RESEARCH OF LiF-LiVO3-KCl-KBr-KVO3 OF FIVECOMPONENT MUTUAL SYSTEM Li, K||F, Cl, Br, VO By the method of the differential thermal analysis phase equilibria in stable pentatop of LiF-LiVO 3KCl-KBr-KVO3 of five-component mutual system Li, K || F, Cl, Br, VO 3 was studied. The eutectic structure was found with a temperature of melting of 302 °C.

The LiF-NaF-NaBr-CsBr system was investigated by the metod of DTA. The t-x–diagrams were constructed and quaternary eutectic was determined.

PYROCHLORE SOLID SOLUTION IN Bi2O3-Fe2O3-Sb2Ox SYSTEM

AND ITS PROPERTIES

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences The subsolidus phase equilibria of the Bi 2O3-Fe2O3-Sb2Ox system have been investigated and the isothermal section at 775-800°C has been constructed. It was shown that the only ternary compound with pyrochlore -type structure forms a substantial solid solution region which existence suggests that 7–25% of the Bi-sites are occupied by Fe3+. The Mossbauer data confirms that Fe3+ ions enter the Bi-positions and a number of Bi- and Fe(Sb)-sites appear to be vacant. Magnetic properties of the pyrochlore were studied at – 300K and at applied magnetic fields up to 7T.

SYNTHESIS AND PHYSICAL CHEMICAL STUDY OF NEW PHOSPHORS BASED

ON RARE EARTH-DOPED FLUORBORATE GLASSES AND GLASS CERAMICS

A. V. Egorysheva1, A. P. Melekhov2, O. B. Ananin2, D. V. Lavroukhine2, G. S. Bogdanov2, I. P. Sipailo Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences Glass formation and physical chemical properties of the glasses in the B 2O3-CaF2-Bi2O3 system is studied. The Ln–doped glasses (Ln= La, Nd, Eu, Dy, Er, Tm) are synthesized and the influence of REE on crystallization behavior of the glasses is considered. The samples of transparent glass-ceramics, containing Ca1-xEuxF2 and Ca1-xLaxF2 crystallites with the size about 40 nm are synthesized. The luminescence properties of the glasses and glass-ceramics are examined.

PHYSICO-CHEMICAL ANALYSIS OF THE Cs2HgBr4–Cs2ZnBr4–CsBr SYSTEM Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow,, e-mail:

The interaction of components in the Cs 2HgBr4–Cs2ZnBr4–CsBr ternary system was studied by DTA and X-ray diffraction. The liquidus surface consists of the crystallization fields of three phases: CsBr, a solid solution of Cs2HgBr4 with Cs2ZnBr4 (), and solid solution based on Cs3ZnBr5. The coordinates of the ternary eutectic point were found.

SYNTHESIS AND PHYUSICAL AND CHEMICAL

PROPERTIESES

OF NANOCOMPOSITES COLCIUM HYDROXYAPATITE/

CHITOSANE/MULTIWALLED CARBON NANOTUBES

Abstract: With method coprecepitation calcium hydroxyapatite (Ca 10(РО4)6(OH)2) (HA), chitosan (С6Н11NO4)n (CHIT) and multiwalled carbon nanotubes (CNT) in system системе CaCI2-(NH4)2HPO4С6Н11NO4)n-NH3-CNT-Н2О (300 K) synthezesed nanocomposites HA/CHIT/CNT of compositions Ca10(РО4)6(OH)2. х(С6Н11NO4). yУНТ. zH2O, где х=0,1; 0,2; 0,5; у=0,5; 2,0; 4,0; 5,0; z=5,9-7,9 and made identifications of receives products with physical and chemical methods.

STUDY OF SECTIONS

Crystallization surface of chloride and potassium bicarbonate in К+, (C2H5)2NH2+ // НСО3-, ClH2O system at 10 ° C are studied. Phase structure of two type sections of system S n - КHCO3 – H2O, Sn - КCl – H2O, where F - conditional component is a mixture of salt components, was determined.

The phase equilibria in the system SnTe-YbTe have been study by means of DTA, XRD and scanning electron microscopy (SEM). It is shown that this system is characterized by formation of continuous solid solutions field at high-temperature (1000 K). By decreasing temperature, solid solutions are decompose and the solubility based on initial components is 40 (SnTe) and 5 mol. % (YbTe).

PHASE EQUILIBRIUM, MAGNETIC AND ELECTRICAL PROPERTIES OF

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences Abstract: Phase diagram of GaSb-MnSb was investigated by the complex of the methods of the physical-chemical analyses. An eutectic point situates at 41 mol.% of MnSb and T MELT = 632°C. The eutectic of GaSb-MnSb is a granular ferromagnet with Curie point ~ 600K. The curves of resistance vs magnetic field have a difficult character, which is explained by the different mechanism of the dissipation of the charges.

SYNTHESIS AND PHYSICO-CHEMICAL INVESTIGATION OF

Baku State University, 2 Institute of Chemical Problems named after akad. M.F. Nagiyev of National Academy Physical-chemical analysis (DTA, XRD, ISA, as well as microhardness and density measurements) glassformation on the As2Se base in the system As2Se3-Cr2Se3 was investigated.It was found that slow cooling of glass formation based on As2Se3 up to 10 mol. % Cr2Se3, and glass-crystalline region extends to 20 mol. % Cr2Se3.

PREPARATION AND PROPERTIES OF EuAsX3, EuAs4X7, EuAs2X4 AND Eu3As4X9 (X T.M. Ilyasly, M.I. Chiragov, R.F. Abbasova, L.A. Mamedova, S.M. Veysova, Z.I. Ismayilov This paper presents information regarding the synthesis of EuAsX3, EuAs4X7, EuAs2X4 and Eu3As4X (X – S, Se, Te) compounds, their crystallographic, chemical and electro physical properties. The ternary chalcogenides were synthesized by the direct fusion technique. Single crystals of these compounds have been prepared by chemical gas-transport reaction method. The structural properties of compounds were calculated. All compounds are n-type semiconductors, their electroconductivity, band gap energy have been determined.

PHYSICO-CHEMICAL INVESTIGATION OF SOME

Tl5Te3-Tl9LnTe6-Tl9BiTe6 SYSTEM WITH Tl5Te3 –TYPE STRUCTURE S.Z. Imamaliyeva, T.M. Gasanly, M.B. Babanly, [email protected] Phase equilibriums in the Tl5Te3-Tl9LnTe6-Tl9BiTe6 systems were investigated using DTA, XRD techniques and measurement of microhardness. Projection of liquidus and solidus surfaces, some isothermal and polithermal sections of phase diagram as well as concentration dependence of microhardness and crystal lattice parameters were constructed. It was established, that systems Tl 5Te3-Tl9LnTe6-Tl9BiTe6 are characterized by formation of continuous field solid solutions with Tl5Te3-type structure FGBOU VPO **« Dagestan state university, Branch united to institute of high temperatures», «Branch of Joint Institute for High Temperatures of the RAS», e-mail: [email protected] A thermodynamic calculations and identify areas of mutual exchange reactions in the three-and fourreciprocal systems ogranyayuschih system Li, K / / F, Cl, Br, MoO 4. Produced by decomposition of the system pentatope, shaped tree phases, showed that its topological diagram of linear type.

THE INFLUENSE OF ELEMENT Er ON PHYSICOCHEMICAL PROPERTIES OF

Institute of Physics named after G.B.Abdullaev of National Academy of Sciences of Azerbaijan, State Economic University of Azerbaijan, 3Azerbaujan State Pedagogical University The phase diagram of the (Bi2Sb5Se3Te6I3)1-х (Er)х system was studied by differential thermal analysis, X–ray diffraction microstructural analysis and microhardness and density measurements. The influence of Er element on the physico-chemical properties of solid solution (Bi 2Sb5Se3Te6I3) of n-type was analyzed and its phase diagram was constructed. At room temperature the (Bi 2Sb5Se3Te6I3) based solid solution extend to 4,5 at. % Er. Compounds (Bi2Sb5Se3Te6I3) and Er form the eutectic which contain 10 at. % Er and melts at 4800C.

THE ORDERING AND THE THEORETICAL ANALYSIS OF THE TERNARY

RECIPROCAL SYSTEMS ROWS OF LITHIUM, SODIUM, POTASSIUM AND BARIUM

HALOGENS

FGBOU VPO “Samara State Technical University”, [email protected] The rows of the Li,Ba||F,Г (Г–Cl,Br,I), Na,Ba||F,Г (Г–Cl,Br,I), K,Ba||F,Г (Г–Cl,Br,I) ternary reciprocal systems were ordered, the phase diagram analysis was carried out and the regularities of systems structure complicated by compounds on the binary subsystems were figured out. The predicted results of uninvestigated ternary reciprocal systems were shown. The phase diagram analysis was carried out by the method of prediction based on the regularities of the investigated phase diagrams and the regularities of components interaction.

PHASE EQUILIBRA IN THE SYSTEMS

The interaction of system components Мe2Mo(W)O4–CuMo(W)O4–Mo(W)O3 (Me – Li, Na,K) by visual Politerm, received new experimental data on the nature of the interaction of its constituent substances, identified low-melting compounds and new phases, including copper molybdate and tungstate, representing scientific and practical interest).

VOLUME AND TRANSPORT PROPERTIES OF ZIRCONIUM-CONTAINING

MOLTEN SALTS

The results of studying density and specific electric conductivity of molten LiF-KF-ZrF 4, NaF-KFZrF4, LiCl-KF-ZrF4 and KCl-KF-ZrF4 mixtures in a wide range of temperatures and concentrations are presented. Observed trends in changing physical-chemical properties of molten mixtures of zirconium fluoride with alkali metal halides can be satisfactorily explained within the model of complex structure of ionic liquids.

SURFFCE PROPERTIES OF ZIRCONIUM-CONTAINING MOLTEN SALTS

Surface tension of molten LiF-KF-ZrF4, LiCl-KF-ZrF4 and KCl-KF-ZrF4 mixtures was measured using method of maximum pressure in a gas bubble. Excessive functions (Gibbs free energy, entropy, enthalpy) of interaction of the species in the surface layer were calculated. Considerable effect of ionic composition of the mixtures on surface properties of the melts was confirmed.

PHASE EQUILIBRIA INVESTIGATION IN THE SYSTEM

Perm State University National Research, e-mail:[email protected] Abstract: The phase equlibria in the system NH4+ || H2PO4, HPO42, SO42, Cl H2O were determined in the whole concentration range at 298K. The compositions of solid phases which are in equilibrium with invariant solution were instituted. Data of the compositions corresponding to mono-, bi- and trivariant equilibria were obtained.

THE FORMATION OF SOLID SOLUTIONS IN THE TERNARY SYSTEMS BASED

ON COMPOUNDS AIVBV

Abstract: The continuous series of solid solutions take place in the Ge - As - P and Sn - As - P ternary systems, but three-phase region in the phase diagrams polythermal sections GeAs-GeP, Sn 4As3 - Sn4P3 is due to incongruent melting character of germanium phosphide and tin arsenide, accordingly,. The polythermal section Sn4As3 - Sn4P3 phase diagram was investigated by differential thermal analysis method. In the system Si - As - P implemented peritectic mixture of solid solutions based on silicon phosphide and silicon arsenide.

LiCl - LiNO3 SYSTEM TOPOLOGY RESEARCH BY DIFFERENTIAL THERMAL

ANALYSIS

In previous publications the system LiCl - LiNO 3 are two variants of the topological structure, including the formation of incongruently melting compounds with the composition of LiCl * 4LiNO 3.

Therefore, this system was study by calculation and differential thermal analysis methods, which confirmed the lack of compounds.

FPBEIofHE "The Samara state technical university", [email protected] System Na2SO4–Li2SO4 is a part of the phase complex Li, Na, K || F, Cl, Br, NO 3,SO4. The analysis of data of literature showed existence of at least two connections of incongruent melting. The research of twocomponent system conducted by the DTA method allowed to confirm both these connections.

STABLE TETRAHEDRON LiF-KNO3-KBr-KF, LiF-KNO3-KBr-LiNO3 A QUATERNARY RECIPROCAL SYSTEMS Li,K || F,Br,NO FGBOU VPO "Samara State Technical University", E-mail: [email protected] The first method of differential thermal analysis to study the stability tetraydery LiF-KNO 3-KBr-KF, LiF-KNO3-KBr-LiNO3 ternary reciprocal system Li,K || F,Br,NO 3. Studied phase diagrams revealed compositions and melting quaternary invariant points.

Оглавление

КОМПЛЕКСНЫЙ ФИЗИКО-ХИМИЧЕСКИЙ АНАЛИЗ С ПОМОЩЬЮ ПРИБОРОВ

ФИРМЫ SHIMADZU ДЛЯ ИССЛЕДОВАТЕЛЬСКИХ ЦЕЛЕЙ, ЭКОЛОГИЧЕСКОГО

МОНИТОРИНГА И ПРОИЗВОДСТВЕННОГО КОНТРОЛЯ

ООО «Аналит Продактс» - генеральный дистрибьютор Shimadzu 199106, Санкт-Петербург 26-линия В.О., д. 15/2 лит.А, оф. 9.06.

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СОВЕЩАНИЕ ОРГАНИЗОВАНО ПРИ ФИНАНСОВОЙ ПОДДЕРЖКЕ

X МЕЖДУНАРОДНОЕ КУРНАКОВСКОЕ СОВЕЩАНИЕ

ПО ФИЗИКО-ХИМИЧЕСКОМУ АНАЛИЗУ

Формат 60х84 1/16. Бумага офсетная.

Самарского государственного технического университета 443100, г. Самара, ул. Молодогвардейская, 244, корпус №