Co3O4/CeO2 and Co3O4/CeO2–ZrO2 composite catalysts for methane combustion: Correlation between morphology reduction properties and catalytic activity

Autor:	Giulio Deganello, G. Di Carlo, Leonarda F. Liotta, Giuseppe Pantaleo
Přispěvatelé:	LIOTTA LF, DI CARLO G, PANTALEO G, DEGANELLO G
Rok vydání:	2005
Předmět:	Morphology (linguistics) Materials science Process Chemistry and Technology Composite number Inorganic chemistry chemistry.chemical_element General Chemistry Catalysis Methane law.invention chemistry.chemical_compound chemistry Nitrate Chemical engineering law Calcination Methane combustion Cobalt
Zdroj:	Catalysis Communications. 6:329-336
ISSN:	1566-7367
DOI:	10.1016/j.catcom.2005.02.006
Popis:	Co3O4/CeO2 and Co3O4/CeO2–ZrO2 composite catalysts have been prepared by two different techniques, co-precipitation by citrate method and impregnation with cobalt nitrate of pre-formed ceria and ceria–zirconia oxides. The materials, as prepared and after ageing at 750 °C 7 h, were tested for methane combustion and the catalytic performances were compared with those of a commercial Co3O4, used as reference. A significant improvement of the activity was observed in the composite oxide Co3O4(30 wt%)/CeO2(70 wt%), prepared by citrate method, which exhibits the lowest light-off temperature of methane (T50 = 400 °C) and does not suffer deactivation after calcination at 750 °C 7 h.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4405807df673e83e8f06226f979f9a2f https://doi.org/10.1016/j.catcom.2005.02.006 Zobrazit plný text záznamu Full Text from ScienceDirect