Abstract: Certain organometallic precursors selectively interact with surface hydroxyl groups on an inorganic oxide support such as silica, alumina or silica-alumina or to provide a uniform distribution of metal complexes on the surfaces of said support. Subsequent reduction of the support results in a high dispersion of uncomplexed metal centers to which other organometallic precursors are subsequently attached. The substantially attached organometallic precursors may be reduced and/or sulfided to yield a highly active hydrogenation catalyst having a plurality of metal species in a highly dispersed distribution.

Abstract: A method of incorporating metals onto a crystalline aluminosilicate zeolite support comprises first depositing a metal which forms bonds with the zeolite and subsequently depositing a catalytically active metal into the zeolite which becomes associated with the first metal. Both metals may be introduced by decomposition of organometallic complexes such as allyl complexes.