Influence of Synthesis Conditions on the Crystal Structure of the Powder Formed in the ZrO2- Ce2O3/CeO2 System Научная публикация
| Конференция |
Международная конференция «Плазменные, лазерные исследования и технологии» (ПЛИТ 2016) 25-27 янв. 2016 , Москва |
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| Журнал |
Journal of Physics: Conference Series
ISSN: 1742-6588 , E-ISSN: 1742-6596 |
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| Вых. Данные | Год: 2016, Том: 747, Номер статьи : 012041, Страниц : 5 DOI: 10.1088/1742-6596/747/1/012041 | ||||||
| Ключевые слова | FEATURES; Dy; Ln | ||||||
| Авторы |
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Реферат:
Influence of synthesis conditions (type of atmosphere, reduction and oxidation, annealing temperature) on the chemical composition and structure of the compounds formed in the "ZrO2 - Ce2O3 / CeO2" system has been investigated by X-ray absorption fine structure (XAFS) spectroscopy combined with X-ray diffraction (XRD) and thermogravimetric analysis (TGA). It is revealed that isothermal annealing of precursor at temperatures less than 1000 °C in air leads to formation of Ce0.5Zr0.5O2 powders with cubic fluorite-type structure (Fm-3m). Further increase of annealing temperatures above 1000 °C causes decomposition of formed crystal structure into two phases: cubic and tetragonal. Annealing in reduction hydrogen atmosphere causes formation of Ce4 + 2xCe3 + 2-2xZr2O7 + x compounds with intermediate valency of cerium, where value of x depends on the reducing conditions and treatment parameters of precursor. Annealing in vacuum at 1400 °C strongly reduces the content of Ce4+ in a powder samples and leads to formation of pyrochlore structure (space group Fd-3m) with practically Ce3+ valence state.
Библиографическая ссылка:
Popov V.V.
, Menushenkov A.P.
, Khubbutdinov R.M.
, Svetogorov R.D.
, Zubavichus Y.V.
, Sharapov A.S.
, Kurilkin V.V.
Influence of Synthesis Conditions on the Crystal Structure of the Powder Formed in the ZrO2- Ce2O3/CeO2 System
Journal of Physics: Conference Series. 2016.
V.747. 012041
:1-5. DOI: 10.1088/1742-6596/747/1/012041
WOS
Scopus
РИНЦ
CAPlusCA
OpenAlex
Influence of Synthesis Conditions on the Crystal Structure of the Powder Formed in the ZrO2- Ce2O3/CeO2 System
Journal of Physics: Conference Series. 2016.
V.747. 012041
:1-5. DOI: 10.1088/1742-6596/747/1/012041
WOS
Scopus
РИНЦ
CAPlusCA
OpenAlex
Файлы:
Полный текст от издателя
Даты:
| Поступила в редакцию: | 1 сент. 2016 г. |
| Опубликована в печати: | 1 сент. 2016 г. |
| Опубликована online: | 21 сент. 2016 г. |
Идентификаторы БД:
| Web of science: | WOS:000387066400041 |
| Scopus: | 2-s2.0-84992038046 |
| РИНЦ: | 27583028 |
| Chemical Abstracts: | 2016:1946004 |
| Chemical Abstracts (print): | 172:365357 |
| OpenAlex: | W2521523406 |