Главная Новые поступления Описание Шлюз Z39.50

Базы данных


Расплавы - результаты поиска

Вид поиска

Область поиска
в найденном
 Найдено в других БД:Каталог книг и продолжающихся изданий (17)Каталог диссертаций и авторефератов диссертаций УрО РАН (10)Каталог препринтов УрО РАН (1975 г. - ) (2)Интеллектуальная собственность (статьи из периодики) (2)Труды Института высокотемпературной электрохимии УрО РАН (70)Труды сотрудников Института органического синтеза УрО РАН (169)Труды сотрудников Института теплофизики УрО РАН (74)Труды сотрудников Института химии твердого тела УрО РАН (146)Публикации Черешнева В.А. (29)Публикации Чарушина В.Н. (60)Каталог библиотеки ИЭРиЖ УрО РАН (2)Библиометрия (3)
Формат представления найденных документов:
полный информационныйкраткий
Отсортировать найденные документы по:
авторузаглавиюгоду изданиятипу документа
Поисковый запрос: (<.>K=Be<.>)
Общее количество найденных документов : 35
Показаны документы с 1 по 10
 1-10    11-20   21-30   31-35 
1.

Вид документа :
Шифр издания : 54/K 84
Автор(ы) : Krotov V. , Filatov Ye.
Заглавие : Anomalous Influence of Electrochemically Inert ZrCl4 on UO2 Current Efficiency During Electrolysis in (NaCl-KCl)equim-UO2Cl2-ZrCl4 Melt
Место публикации : Electrochimica Acta. - 2014. - Vol. 145. - С. 254-258
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): электролит расплавленный--катодный осадок--uo2-zro2
Аннотация: This paper describes the influence of ZrCl4, which is electrochemically inert under experimental conditions, on uranium dioxide current efficiency during the (NaCl-KCl)equim-UO2Cl2 (10-20 wt.%)-ZrCl4 (0-12 wt.%) melt electrolysis at temperatures of 700 and 750 °C and at electrolysis current densities of 0.08-0.63 A/cm2. An extreme dependence of the uranium dioxide current efficiency on the ZrCl4 concentration and the corresponding minimum and maximum was found. The ZrCl4 influence on the UO2 current efficiency is assumed to be caused by the changes in the mechanism of UO22+ ion reduction to uranium dioxide
Найти похожие

2.

Вид документа : Статья из журнала
Шифр издания : 54/C 16
Автор(ы) : Zaikov Y. P., Shurov N. I., Batukhtin V. P., Molostov O. G.
Заглавие : Calcium Production by the Electrolysis of Molten CaCl2—Part II. Development of the Electrolysis Devices and Process Technology Approval
Место публикации : Metallurgical and Materials Transactions B. - 2014. - Vol. 45, № 3. - С. 968-974.
Примечания : Bibliogr. : p. 974 (16 ref.)
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): электролизеры--извлечение сa--cacl2
Аннотация: The electrolyzers used to extract calcium from copper-calcium alloys at 0.5 to 3.0 kA were designed, manufactured, and utilized to study the process parameters more precisely. The pilot electrolysis device used to produce calcium from copper-calcium alloys at 12 to 15 kA was developed. The calcium production using the bipolar electrolyzer was proved to be possible and was experimentally tested.
Найти похожие

3.

Вид документа : Статья из журнала
Шифр издания : 54/K 84
Автор(ы) : Krotov V. Ye., Filatov Ye. S.
Заглавие : Regularities of cathode deposit formation during simultaneous reduction and exchange reactions. Influence of the electrolysis conditions on the concentration of components in the UO2-ZrO2 cathode deposit
Место публикации : Electrochimica Acta. - 2014. - Vol. 116. - С. 484-489. - ISSN 0013-4686. - ISSN 0013-4686
Примечания : Bibliogr. : p. 489 (25 ref. )
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): осаждение катодное--катод--электролиз
Аннотация: This paper represents the experimental data on a quantitative composition of cathode UO2-ZrO2 deposits, which are formed through simultaneous electrolytic reduction of UO22+ ions to UO2 and the exchange between the UO2 and Zr4+ ions present in the molten (NaCl-KCl) equim.-UO2Cl2-ZrCl4 electrolyte. A scheme for the formation of UO2-ZrO2 deposits containing up to 98 mol. % of ZrO2 is provided. The fraction of zirconium dioxide decreased as the ZrCl4 concentration decreased and as current density and electrolysis times increased. The electrolyte temperature influence on the average composition of the UO2-ZrO2 deposit was found to be insignificant. The structure of the cathode deposit was analyzed. The established regularities are explained by the change in the reduction and exchange reaction rates at the cathode.
Найти похожие

4.

Вид документа :
Шифр издания : 54/S 19
Автор(ы) : Samgin A. L.
Заглавие : Lattice-assisted proton hopping in oxides at low temperatures
Место публикации : Journal of Physics and Chemistry of Solids. - 2013. - Vol. 74, № 12. - С. 1661-1668.
Примечания : Библиогр.: с. 1668 (44 ref.)
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): электроосаждение--рафинирование--сплавы
Аннотация: Stimulated diffusion of protons in oxides such as ABO3 crystals and rutile TiO2 is discussed in the context of quantum Brownian motion. A self-consistent lattice-assisted proton hopping (LAPH) model is developed by going from white noise (characteristic of the standard stochastic theory of superionic conduction) to colored noise in the Markovian limit. This model differs from the commonly used ion jump models in that the hydrogen diffusion rate prefactor is identified as a quantity proportional to the frequency of phonon assistance. Application of the quantum fluctuation–dissipation theorem suggests that the dynamic activation energy for diffusion is a function of a bath-mode frequency. The LAPH model can predict enhanced rates of barrier jumping at room temperature compared to thermally activated proton diffusion. This indicates that low-temperature solid oxide devices are potential candidates for use in hydrogen energy research. The LAPH model offers a valid explanation for the mechanism of high protonic mobility recently observed for TiO2 in a picosecond transient pump-probe experiment. This unexpected dominant lattice relaxation channel must be considered as a new classical-like (but low-temperature) proton transfer mechanism. For vibration-assisted protonic jumps to occur at low temperature, the phonon assistance must be classified as a low-frequency vibration specific to each lattice
Найти похожие

5.

Вид документа : Статья из газеты
Шифр издания : 54/T 44
Автор(ы) : Nekrasov V. N., Suzdaltsev A. B., Limanovskaya O. V., Khramov A. P., Zaikov Yu. P.
Заглавие : Theoretical and experimental study of anode process at the carbon in KF–AlF3–Al2O3 melts
Место публикации : Electrochimica Acta. - 2012. - Vol. 75. - С. 296-304.: граф. - ISSN 0013-4686. - ISSN 0013-4686
Примечания : Библиогр.: с. 303-304 (31 ref.)
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): электролиз алюминия--температура --анод--поляризация
Аннотация: The influence of the [KF]/[AlF3] ratio (1.1–1.5 mol mol−1), the Al2O3 concentration (1–5 wt.%) and the temperature (973–1073 K) on the overpotential of the anode process for a glassy carbon electrode in a KF–AlF3–Al2O3 melt under stationary and non-stationary conditions was studied by galvanostatic polarisation and chronopotentiometry. A theoretical (mathematical) description of the two-step electrode process at the carbon anode in KF–AlF3–Al2O3 melts under stationary and non-stationary conditions is suggested. The charge of the electric double-layer, the formation of an intermediate COads adsorption product at the anode surface, the limitations of the current transfer, which include the charge transfer through the electrode/electrolyte interface, and the diffusion and chemical interaction of the electroactive ions in the melt near the anode surface were taken onto account. Alterations of the basic parameters of the process were monitored and analysed. Estimates of anode process kinetics parameters (e.g., exchange current densities and the degree of the anode surface coverage by the intermediate product COads) for different experimental conditions were made by a comparison of the modelled and experimental polarisation curves. The electrochemical desorption of the intermediate product COads from the anode surface (the second step) was shown to be relatively slower than the charge transfer process (the first step). In addition, slow chemical reactions at current densities of 0.1–1 A cm−2 can occur prior to the electrode process.
Найти похожие

6.

Вид документа : Статья из журнала
Шифр издания : 54/G 49
Автор(ы) : Giridhar P., Zein El Abedin S., Endres F.
Заглавие : Electrodeposition of aluminium from 1-butyl-1-methylpyrrolidinium chloride/AlCl3 and mixtures with 1-ethyl-3-methylimidazolium chloride/AlCl3
Место публикации : Electrochimica Acta . - 2012. - Vol. 70. - С. 210-214.: рис.
Примечания : Библиогр.: с. 214 (29 ref.)
ISSN: 0013-4686
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): alcl3--расплавы органические--электроосаждение--циклическая вольтамперометрия
Аннотация: In this paper we show that nanocrystalline aluminium can be electrodeposited from the ionic liquid 1-butyl-1-methylpyrrolidinium chloride ([Py1,4]Cl/AlCl3) (40/60 mol%). The study comprises electrochemical experiments such as cyclic voltammetry, constant potential electrolysis, SEM and XRD measurements. Thick and uniform layers of aluminium are obtained from [Py1,4]Cl/AlCl3 with an average crystal size of 20 nm at 100 ◦C. Aluminium deposits obtained from 90:10 vol% and 80:20 vol% of [Py1,4]Cl/AlCl3 and [EMIm]Cl/AlCl3 are nanocrystalline at 100 ◦C. The presence of imidazolium cations seems to alter the electrode/electrolyte interface to some extent as nanocrystalline and microcrystalline aluminium deposits are obtained from the ionic liquid mixtures at compositions of 70:30 vol% of [Py1,4]Cl/AlCl3 and [EMIm]Cl/AlCl3 and below
Найти похожие

7.

Вид документа :
Шифр издания : 54/T 44
Автор(ы) : Redkin A. A. , Nikolaeva E. V., Dedyukhin A. E., Zaikov Y. P.
Заглавие : The electrical conductivity of chloride melts
Место публикации : Ionics . - 2012. - Vol. 18 , № 3. - С. 255-265.: граф.
Примечания : Библиогр.: с. 265 (28 ref.)
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): хлориды--электропроводность
Аннотация: The interrelationship between electrical conductivity, molar volume and enthalpy of mixing was studied for molten chlorides and their mixtures. The dependence of electrical conductivity and activation energy on the molar volume is different for various groups of salts. The dependence of specific conductivity on molar volume obtained for molten alkali chlorides was found to be similar to other chloride salts. The specific conductivity of binary mixtures that lack strong chemical interactions between the components can also be described by the proposed empirical equation. The enthalpy of mixing should be taken into consideration for these chemical interactions
Найти похожие

8.

Вид документа : Статья из журнала
Шифр издания : 54/E 43
Автор(ы) : Osipenko A., Maershin A., Smolenski V., Novoselova A., Kormilitsyn M., Bychkov A.
Заглавие : Electrochemistry of oxygen-free curium compounds in fused NaCl–2CsCl eutectic
Место публикации : Journal of Nuclear Materials . - 2010. - Vol. 396, № 1. - С. 102-106. - ISSN 0022-3115. - ISSN 0022-3115
Примечания : Библиогр.: с. 106 (37 ref.)
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: This work presents the electrochemical study of Cm(III) in fused NaCl–2CsCl eutectic in the temperature range 823–1023 K. Transient electrochemical techniques such as cyclic, differential pulse and square wave voltammetry, and chronopotentiometry have been used in order to investigate the reduction mechanism of curium ions up to the metal. The results obtained show that the reduction reaction takes place in a single step . The diffusion coefficient of [CmCl6]3- complex ions was determined by cyclic voltammetry at different temperatures by applying the Berzins–Delahay equation. The validity of the Arrhenius law was also verified and the activation energy for diffusion was found to be 44.46 kJ/mol. The apparent standard electrode potential of the redox couple Cm(III)/Cm(0) was found by chronopotentiometry at several temperatures. The thermodynamic properties of curium trichloride have also been calculated.????
Найти похожие

9.

Вид документа : Статья из журнала
Шифр издания : 54/R 32
Автор(ы) : Redkin А., Tkacheva O.
Заглавие : Electrical Conductivity of Molten Fluoride-Oxide Melts
Место публикации : Journal of Chemical &Engineering Data. - 2010. - Vol. 55, № 5. - С. 1930-1939.: рис. - ISSN 0021-9568. - ISSN 0021-9568
Примечания : Bibliogr. : p. 1938-1939 (32 ref.)
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Empirical equations describing the electrical conductivities of fluorides and fluoride-oxide mixtures have been obtained. These equations are based on two suppositions: (a) electrical conductivity of ionic molten substances is connected with the electronic structure of the cations; (b) the electrical conductivity of ionic melts can be expressed in terms of molar volume. In molten mixtures, the form of the electrical conductivity isotherm depends on the interaction between the components
Найти похожие

10.

Вид документа : Статья из журнала
Шифр издания : 54/C 76
Автор(ы) : Calderoni P., Sharpe P., Nishimura H., Terai T.
Заглавие : Control of molten salt corrosion of fusion structural materials by metallic beryllium
Место публикации : Journal of Nuclear Materials . - 2009. - Vol. 386-388. - С. 1102-1106: рис., табл. - ISSN 0022-3115. - ISSN 0022-3115
Примечания : Библиогр. : с. 1106 (15 ref.)
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): lif--beb2--сталь--be--cr--коррозия
Найти похожие

 1-10    11-20   21-30   31-35 
 

Сиглы отделов ЦНБ УрО РАН


  бр.ф. - Бронированный фонд

  бф - Научно-библиографический отдел

  БХЛ - Фонд художественной литературы

  ИИиА -Фонд исторической литературы в ЦНБ УрО РАН

  ИМЕТ -Отдел ЦНБ в Институте металлургии УрО РАН

  кх - Отдел фондов (книгохранениe)

  МБА - Межбиблиотечный абонемент

  мф - Методический фонд

  ок - Отдел научной каталогизации

  оку - Отдел комплектования и учета

  орф - Обменно-резервный фонд

  пф - Читальный зал деловой и патентной информации

  рк - Фонд редкой книги

  ч/з - Главный читальный зал

  эр - Зал электронных ресурсов

  

Сиглы библиотек институтов и НЦ УрО РАН
© Международная Ассоциация пользователей и разработчиков электронных библиотек и новых информационных технологий
(Ассоциация ЭБНИТ)
Яндекс.Метрика