METAL CATALYSTS WITH PERM-SELECTIVE COATINGS, METHODS OF MAKING SAME AND USES THEREOF

摘要

In various illustrative embodiments of the present invention there are provided catalysts comprising metals on supports, methods of making the same and uses thereof. In various illustrative embodiments of the present invention, there is provided a catalyst comprising: a core comprising a metal catalyst dispersed on a support, an inner shell adsorbed on the core, and an outer shell adjacent and in contact with the inner shell. In various other illustrative embodiments of the present invention, there is provided a catalyst as described herein further comprising a hydrogenation site adsorbed on, embedded in or embedded in part in the outer shell. In avrious other illustrative embodiments of the present invention, there is provided a catalyst described herein wherein the metal is a noble metal. In various oth er illustrative embodiments of the present invention, there is provided a method of hydrogenating unsaturated hydrocarbons comprising exposing an unsaturated hydrocarbon to a catalyst described herein.