Oxygen Diffusion in Nanostructured Perovskites Научная публикация
Конференция |
Catalysis in Membrane Reactors : 7th International Conference 11-14 сент. 2005 , Rende (CS) |
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Журнал |
Catalysis Today
ISSN: 0920-5861 , E-ISSN: 1873-4308 |
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Вых. Данные | Год: 2006, Том: 118, Номер: 1-2, Страницы: 151-157 Страниц : 7 DOI: 10.1016/j.cattod.2006.02.088 | ||||||
Ключевые слова | Electrochemical oxidation, Heterogeneous oxygen diffusion, Nanostructured perovskites | ||||||
Авторы |
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Организации |
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Информация о финансировании (3)
1 | Российский фонд фундаментальных исследований | 05-03-08109 |
2 | Российский фонд фундаментальных исследований | 03-03-89005 |
3 | Российский фонд фундаментальных исследований | 05-03-32640 |
Реферат:
Nonstoichiometric perovskite-related oxides (e.g. ferrites and cobaltites, etc.) are characterized by fast oxygen transport at ambient temperatures, which relates to the microstructural texturing of these materials, consisting wholly of nanoscale microdomains.
We have developed a heterogeneous diffusion model to describe the kinetics of oxygen incorporation into nanostructured oxides. Nanodomain boundaries are assumed to be the high diffusivity paths for oxygen transport whereas diffusion into the ordered domains proceeds much slower. The model has been applied for qualitative evaluation of oxygen diffusion parameters from the data on wet electrochemical oxidation of nanostructured perovskite SrCo0.5Fe0.2Ta0.3O3−y samples.
Using Laplace transform methods, an exact solution is found for a ramped step-wise potential, allowing fitting of the experimental data to theoretical curves (in Laplace transforms). A further model generalization is considered by introducing additional parameters for the size distribution of domains and particles.
Библиографическая ссылка:
Zhogin I.L.
, Nemudry A.P.
, Glyanenko P.V.
, Kamenetsky Y.M.
, Bouwmeester H.J.
, Ismagilov Z.R.
Oxygen Diffusion in Nanostructured Perovskites
Catalysis Today. 2006. V.118. N1-2. P.151-157. DOI: 10.1016/j.cattod.2006.02.088 WOS Scopus РИНЦ
Oxygen Diffusion in Nanostructured Perovskites
Catalysis Today. 2006. V.118. N1-2. P.151-157. DOI: 10.1016/j.cattod.2006.02.088 WOS Scopus РИНЦ
Файлы:
Полный текст от издателя
Даты:
Опубликована online: | 31 июл. 2006 г. |
Опубликована в печати: | 30 окт. 2006 г. |
Идентификаторы БД:
Web of science | WOS:000241489700022 |
Scopus | 2-s2.0-33748970629 |
РИНЦ | 13522018 |
Chemical Abstracts | 2006:1019727 |
Chemical Abstracts (print) | 146:11596 |
OpenAlex | W2078679986 |