Method for making inorganic oxide supported catalysts

Abstract

A method for making an inorganic oxide supported catalyst involves impregnating an inorganic oxide component with a catalytic metal using an aqueous, acid bath. More specifically, the method involves forming and washing an inorganic oxide component, such as a silica gel or a silica co-gel, for example a silica-zirconia co-gel. The washed inorganic oxide component is then contacted with the acidic bath to effect the impregnation with the catalytic metal, such as cesium, to form an activated inorganic oxide component. Subsequently, the activated component is dried to form the catalyst. The resulting catalysts possess increased surface area, which is beneficial with respect to accessibility and amount of catalytically active sites.

Description

Process for preparing inorganic oxide supported catalysts field of invention The present invention relates to the preparation of catalysts supported by inorganic oxides, in particular to catalysts using porous materials to support catalytic metal species. Background of the invention Inorganic oxides, such as porous silica gel and other silica-based components, are widely used as catalyst supports in industry. For fixed-bed or fluidized-bed type processes, shaped catalysts, such as extrudates, are generally required. There are generally two methods used to produce shaped catalyst particles. One method involves impregnating catalyst components on preformed supported particles, and the other method involves preparing inorganic oxide supported catalyst powders and then processing the powders into shaped catalyst particles. In many catalytic applications, the reaction steps are controlled by the availability and number of catalytically active sites on the catalyst particles....

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Problems solved by technology

However, particles usually have limited mechanical stability