Nanocomposite Structure and Reactivity of Perovskites Based on Lanthanum Manganites Научная публикация
Журнал |
Russian Journal of Physical Chemistry A
ISSN: 0036-0244 , E-ISSN: 1531-863X |
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Вых. Данные | Год: 2012, Том: 86, Номер: 4, Страницы: 606-620 Страниц : 15 DOI: 10.1134/S0036024412040152 | ||||
Ключевые слова | Anion-excess perovskites, Defects, Nanocomposites, Oxidation catalysis | ||||
Авторы |
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Организации |
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Информация о финансировании (2)
1 | Российский фонд фундаментальных исследований | 97-03-71046 |
2 | International Association for the Promotion of Co-operation with Scientists from the New Independent States of the Former Soviet Union | 2162 |
Реферат:
Data on the real/defect structure of anion-excess lanthanum manganites are analyzed. It is shown that low-temperature materials, especially those synthesized with the use of organic additives, form nanocomposite structure due to stabilization of manganese and dopant cations in highly charged states (≥4+) at anion excess. It is established that domains (layers) with perovskite structure containing point defects are separated/intergrown by extended defect regions enriched with lanthanum or promoter cations. It is noted that the composition and concentration of extended defects are controlled by the conditions of synthesis, the calcination temperature, and the nature of the promoter; these defects, which are partly retained after high-temperature treatment, can affect the functional properties of materials. Features of the cation and anion modification of lanthanum manganites and the reactivity of nanocomposite structures with respect to oxidation reactions are analyzed. It is concluded that at a high content of weakly bound oxygen and a noticeable mobility of the lattice oxygen, the activity of these materials in various oxidation reactions is determined by their defect structure and specificity of the catalytic action.
Библиографическая ссылка:
Kuznetsova T.G.
, Sadykov V.A.
, Lunin V.V.
Nanocomposite Structure and Reactivity of Perovskites Based on Lanthanum Manganites
Russian Journal of Physical Chemistry A. 2012. V.86. N4. P.606-620. DOI: 10.1134/S0036024412040152 WOS Scopus РИНЦ
Nanocomposite Structure and Reactivity of Perovskites Based on Lanthanum Manganites
Russian Journal of Physical Chemistry A. 2012. V.86. N4. P.606-620. DOI: 10.1134/S0036024412040152 WOS Scopus РИНЦ
Оригинальная:
Кузнецова Т.Г.
, Садыков В.А.
, Лунин В.В.
Нанокомпозитная структура и реакционная способность перовскитов на основе манганита лантана
Журнал физической химии. 2012. Т.86. №4. С.686-701. РИНЦ
Нанокомпозитная структура и реакционная способность перовскитов на основе манганита лантана
Журнал физической химии. 2012. Т.86. №4. С.686-701. РИНЦ
Даты:
Поступила в редакцию: | 1 апр. 2011 г. |
Опубликована online: | 27 февр. 2012 г. |
Опубликована в печати: | 1 апр. 2012 г. |
Идентификаторы БД:
Web of science | WOS:000302378900014 |
Scopus | 2-s2.0-84862228865 |
РИНЦ | 17991441 |
Chemical Abstracts | 2012:287806 |
Chemical Abstracts (print) | 156:677255 |
OpenAlex | W2083731915 |