Oxygen States in Oxides with a Perovskite Structure and Their Catalytic Activity in Complete Oxidation Reactions: System La1 – xCaxFeO3 – y (x = 0–1) Full article
Journal |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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Output data | Year: 2004, Volume: 45, Number: 3, Pages: 446-453 Pages count : 8 DOI: 10.1023/B:KICA.0000032182.48410.e2 | ||
Tags | Oxidation; Oxygen; Methane; Catalytic Activity; Carbon Monoxide | ||
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Abstract:
Oxygen states in the La1 – x Ca x FeO3 – y perovskites prepared using different procedures are studied by temperature-programmed reduction (TPR). Results are compared to data on the catalytic activity in the oxidation of methane and carbon monoxide. The activity of the samples in the CO and CH4 oxidation over a wide temperature range (200–600°C) is shown to correlate with the amount of reactive surface and subsurface oxygen removable during TPR below 420°C. These oxygen states in the samples of the La1 – x Ca x FeO3 – y series can be associated with the domain or intergrain boundaries. No correlation is found between the amount of lattice oxygen removable during TPR and the activity of the La1 – x Ca x FeO3 – y samples in the complete oxidation of methane at temperatures of 450–600°C. It is suggested that catalytic complete oxidation is determined by the most reactive surface and subsurface oxygen states located at the interphase boundaries, whereas the lattice oxygen does not participate in these reactions.
Cite:
Isupova L.A.
, Yakovleva I.S.
, Rogov V.A.
, Alikina G.M.
, Sadykov V.A.
Oxygen States in Oxides with a Perovskite Structure and Their Catalytic Activity in Complete Oxidation Reactions: System La1 – xCaxFeO3 – y (x = 0–1)
Kinetics and Catalysis. 2004. V.45. N3. P.446-453. DOI: 10.1023/B:KICA.0000032182.48410.e2 WOS Scopus РИНЦ
Oxygen States in Oxides with a Perovskite Structure and Their Catalytic Activity in Complete Oxidation Reactions: System La1 – xCaxFeO3 – y (x = 0–1)
Kinetics and Catalysis. 2004. V.45. N3. P.446-453. DOI: 10.1023/B:KICA.0000032182.48410.e2 WOS Scopus РИНЦ
Original:
Исупова Л.А.
, Яковлева И.С.
, Рогов В.А.
, Аликина Г.М.
, Садыков В.А.
Формы кислорода и каталитическая активность в реакциях глубокого окисления оксидов со структурой перовскита. Система La1 – x CaxFeO3 – y (x = 0–1)
Кинетика и катализ. 2004. Т.45. №3. С.473-480. РИНЦ
Формы кислорода и каталитическая активность в реакциях глубокого окисления оксидов со структурой перовскита. Система La1 – x CaxFeO3 – y (x = 0–1)
Кинетика и катализ. 2004. Т.45. №3. С.473-480. РИНЦ
Dates:
Submitted: | Mar 6, 2003 |
Published print: | May 1, 2004 |
Identifiers:
Web of science | WOS:000222573700020 |
Scopus | 2-s2.0-3042841618 |
Elibrary | 14179281 |
Chemical Abstracts | 2004:491581 |
Chemical Abstracts (print) | 141:126024 |
OpenAlex | W2037566030 |