Redox-catalytic correlations in oxidised copper-ceria CO-PROX catalysts

Autor:	Marcos Fernández-García, Arturo Martínez-Arias, Aitor Hornés, Zoltán Schay, D. Gamarra, Parthasarathi Bera, Zs. Koppány
Rok vydání:	2009
Předmět:	Copper oxide Chemistry Coprecipitation PROX Inorganic chemistry chemistry.chemical_element General Chemistry Heterogeneous catalysis Redox Copper Catalysis chemistry.chemical_compound Transition metal
Zdroj:	Catalysis Today. 143:211-217
ISSN:	0920-5861
DOI:	10.1016/j.cattod.2008.09.018
Popis:	Four nanostructured oxidised copper-cerium catalysts prepared by two different methods (impregnation of ceria and coprecipitation of the two components within reverse microemulsions) with varying copper loadings have been examined with the aim of establishing correlations between redox and catalytic properties for preferential oxidation of CO in H2-rich streams. The analysis is based on ex situ TPR examination both with H2 or CO as well as operando spectroscopic exploration by DRIFTS and XANES, additionally complemented by conventional catalytic tests. The results reveal redox promoting effects on copper oxide reduction and allow establishing a model of the catalytic behaviour of this type of catalysts which can provide keys to control their CO-PROX catalytic properties.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::63c9a61944c2f60b4a57c3e7cfd3f374 https://doi.org/10.1016/j.cattod.2008.09.018 Zobrazit plný text záznamu Full Text from ScienceDirect