Chapter 11 Supported Bimetallic Catalysts Prepared by Controlled Surface Reactions

Abstract

This chapter discusses the supported bimetallic catalysts prepared by controlled surface reactions (CSRs). It is demonstrated that the principle of controlled surface reactions is a powerful approach, and supported bimetallic catalysts prepared by these methods possess unique catalytic properties, in hydrocarbon conversion and in hydrogenation of different organic compounds. Catalysts prepared in this way possess unique catalytic properties. Different supported bimetallic catalysts can be prepared by means of CSRs: the catalysts with direct metal–metal interaction and the catalysts in which the second metal is strongly bound to the support. The properties of these catalysts strongly depended on (1) the type of surface reactions used during the preparation and (2) the thermal treatment applied before the reaction. The chapter emphasizes the mode of controlling the reactions. The chemical nature of the alumina-supported platinum catalyst is used as a driving force to obtain surface entities with direct metal-metal interactions. This approach is based on the reactivity of hydrogen preadsorbed on metal surfaces.