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Nature of Ni and Cu Species in Reduced Bimetallic $Ni-Cu/Al_20_3$ Catalysts

Sankar, Gopinathan and Rao, Ramachandra CN (1986) Nature of Ni and Cu Species in Reduced Bimetallic $Ni-Cu/Al_20_3$ Catalysts. In: Angewandte Chemie International Edition in English, 25 (8). pp. 753-754.


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It is well known that $Ni^{2+}$ ions in calcined $Ni/\gamma-A1_20_3$ catalysts are in a spinel-like phase, occupying both tetrahedral and octahedral sites,[1-3] and are not reduced on treatment with $H_2$ even at high temperatures (770 K). In calcined $Cu/\gamma-Al_20_3$ catalysts, copper is similarly present in a spinel-like phase, [1,2,4] CuO segregating out at high copper loading[5] in this catalyst, however, the $Cu^{2+}$ ions are reducible on treatment with $H_2$.

Item Type: Journal Article
Additional Information: The copyright belongs to VCH Verlagsgesellschaft mbH, Germany.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Depositing User: Sandhya Jagirdar
Date Deposited: 08 Dec 2005
Last Modified: 19 Sep 2010 04:21
URI: http://eprints.iisc.ac.in/id/eprint/4300

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