Paraffin dehydrogenation using platinum-tin promoted zinc aluminate catalyst and silica-free particles

摘要

A method and an improved platinum-tin promoted zinc aluminate catalyst reactor for dehydrogenation of a paraffinic hydrocarbon feed stream as first and second layers of silica-free particles, each positioned in contact with and on opposed surfaces of the catalyst across the direction of feed stream flow through the reactor for preventing the poisoning of said catalyst.