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Methane Oxidation on the Surface of Mixed-Conducting La 0.3Sr0.7Co0.8Ga0.2O 3-δ Научная публикация

Журнал Catalysis Communications
ISSN: 1566-7367
Вых. Данные Год: 2004, Том: 5, Номер: 6, Страницы: 311-316 Страниц : 6 DOI: 10.1016/j.catcom.2004.03.010
Авторы Kharton V.V. 1,2 , Sobyanin V.A. 3 , Belyaev V.D. 3 , Semin G.L. 3 , Veniaminov S.A. 3 , Tsipis E.V. 1 , Yaremchenko A.A. 1 , Valente A.A. 4 , Marozau I.P. 2 , Frade J.R. 1 , Rocha J. 4
Организации
1 Department of Ceramics and Glass Engineering, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal
2 Institute of Physicochemical Problems, Belarus State University, 14 Leningradskaya Str., 220050 Minsk, Belarus
3 Boreskov Institute of Catalysis RAS, 5 Av. Akademika Lavrentieva, Novosibirsk 630090, Russia
4 Department of Chemistry, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal
Реферат: Mixed-conducting La0.3Sr0.7Co0.8Ga0.2O3-δ (LSCG) possesses substantial oxygen permeability, but exhibits a high activity to complete CH4 oxidation, thus making it necessary to incorporate reforming catalysts in the membrane reactors for methane conversion. Dominant CO2 formation is observed for the steady-state conversion of CH4 by atmospheric oxygen (methane/air ratio of 30:70) in a fixed bed reactor with LSCG as catalyst, and for the oxidation of CH4 pulses supplied in helium flow over LSCG powder. The conversion of dry CH4 by oxygen permeating through dense LSCG ceramics, stable operation of which under the air/CH4 gradient is possible due to the surface-limited oxygen transport, yields CO2 concentrations higher than 90%. The prevailing mechanism of total methane combustion is probably associated with weak Co–O bonding in the perovskite-related LSCG lattice, in correlation with data on oxygen desorption, phase stability and ionic transport.
Библиографическая ссылка: Kharton V.V. , Sobyanin V.A. , Belyaev V.D. , Semin G.L. , Veniaminov S.A. , Tsipis E.V. , Yaremchenko A.A. , Valente A.A. , Marozau I.P. , Frade J.R. , Rocha J.
Methane Oxidation on the Surface of Mixed-Conducting La 0.3Sr0.7Co0.8Ga0.2O 3-δ
Catalysis Communications. 2004. V.5. N6. P.311-316. DOI: 10.1016/j.catcom.2004.03.010 WOS Scopus РИНЦ CAPlusCA OpenAlex Sciact
Даты:
Поступила в редакцию: 10 дек. 2003 г.
Принята к публикации: 29 мар. 2004 г.
Опубликована online: 30 апр. 2004 г.
Опубликована в печати: 1 июн. 2004 г.
Идентификаторы БД:
Web of science: WOS:000221979300008
Scopus: 2-s2.0-2342464251
РИНЦ: 13459421
Chemical Abstracts: 2004:384999
Chemical Abstracts (print): 141:192733
OpenAlex: W1992513127
Sciact: 9331
Цитирование в БД:
БД Цитирований
Scopus 32
OpenAlex 29
Альметрики: