Some Reactions over Supported Bimetallic Catalysts

1 Some Reactions over Supported Bimetallic Catalysts 

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Three aspects of the performance of supported catalysts are also discussed in this Chapter. With the development of techniques, as outlined above, for the characterization of supported metal catalysts, it seems timely to survey studies of crystallite size effect/structure sensitivity with special reference to the possible intrusion of adventitious factors (Section 5). Recently there has been considerable interest in the existence of (chemical) metal-support interactions and their significance for chemisorption and catalytic activity/ selectivity (Section 6). Finally, supported bimetallic catalysts are discussed for various reactions not involving hydrocarbons (hydrocarbon reactions over alloys and bimetallic catalysts have already been reviewed in this Series with respect to both basic research and technical applications ). References to earlier reviews (including some on techniques) that complement material in this Chapter are given in the appropriate sections. It might be useful, however, to note here some topics not discussed that also form part of the vast subject of supported metal and bimetallic catalysts and for which recent reviews are available, viz, spillover, catalyst deactivation, the growth and... 

The literature and our data give evidence for interesting possibilities of interaction of organometallic compounds with the surfaces of supported metals for obtaining bimetallic catalysts. The use of this novel reaction of metal carbonyl clusters with metal surfaces allows the second metal to be selectively supported on the surface of a metal particle under mild conditions. The bimetallic catalysts obtained have some advantages over conventional catalysts ... 

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