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An in Situ EXAFS Investigation of Bimetallic Cu-Ni/γ-AI203 Catalysts

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dc.contributor.author Kulkarni, G U
dc.contributor.author Sankar, G
dc.contributor.author Rao, C N R
dc.date.accessioned 2012-11-27T10:51:52Z
dc.date.available 2012-11-27T10:51:52Z
dc.date.issued 1991-10
dc.identifier 0021-9517 en_US
dc.identifier.citation Journal Of Catalysis 131(2), 491-501 (1991) en_US
dc.identifier.uri https://libjncir.jncasr.ac.in/xmlui/10572/1098
dc.description Restricted Access en_US
dc.description.abstract In situ EXAFS investigations have been carried out on Ni/γ-Al2O3 and Cu-Ni/γ-Al2O3 catalysts with different metal loadings, and prepared by different procedures. As-prepared Ni/γ-Al2O3 on calcination gives NiO and NiAl2O4-like phases on the surface, the proportion of the latter increasing with the increase in calcination temperature; the proportion of the NiO-like phase, on the other hand, increases with the metal loading. The reducibility of Ni/γ-Al2O3 to give metallic Ni on the surface directly depends on the proportion of the NiO-like phase present before reduction. Co-impregnating with Cu suppresses the formation of the surface aluminate and thereby favours the reduction to metallic Ni. This conclusion is clearly substantiated by our studies of bimetallic catalysts containing varying Cu/Ni ratios and also those prepared by the two-stage impregnation procedure. en_US
dc.description.uri http://dx.doi.org/ 10.1016/0021-9517(91)90281-8 en_US
dc.language.iso en en_US
dc.publisher Academic Press Inc en_US
dc.rights © 1991 Academic Press Inc en_US
dc.subject Nickel en_US
dc.subject Deposition en_US
dc.subject Reduction en_US
dc.subject Oxide en_US
dc.title An in Situ EXAFS Investigation of Bimetallic Cu-Ni/γ-AI203 Catalysts en_US
dc.type Article en_US


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