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- W1543177289 abstract "In situ EXAFS investigations have been carried out on Ni/γ-Al2O3 and CuNi/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." @default.
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- W1543177289 date "1991-10-01" @default.
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- W1543177289 title "An in situ EXAFS investigation of bimetallic Cu$z.sbnd;Ni/$gamma;-Al2O3 catalysts*1" @default.
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- W1543177289 doi "https://doi.org/10.1016/0021-9517(91)90281-8" @default.
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