Patent ID: 7622623

Claim:
A catalyst bed system for use in adiabatic, non-oxidative and cyclic dehydrogenation processes comprising: (a) a dehydrogenation catalyst comprising an active component and a support, wherein said active component is selected from an oxide of a metal of Group 4 or Group 5 or Group 6 and combinations thereof; and wherein said support is selected from aluminum oxide, aluminas, alumina monohydrate, alumina trihydrate, alumina-silica, transition aluminas, alpha-alumina, silica, silicate, aluminates, calcined hydrotalcites, zeolites and combinations thereof; (b) a first inert material selected from any material that is catalytically inactive when subjected to reaction conditions that can effect non-oxidative dehydrogenation for the production of olefins and that has a high density and high heat capacity and that is not capable of producing heat during any stage of the non-oxidative and cyclic dehydrogenation process; and (c) a secondary component comprising a heat-generating inert material and a carrier capable of supporting the heat-generating inert material, wherein said secondary component is catalytically inert in a first stage involving non-oxidative dehydrogenation, non-oxidative cracking or non-oxidative coking and generates heat after being exposed to reducing and/or to oxidizing reaction conditions in a second stage of the cyclic process; and said dehydrogenation catalyst, first inert material, and secondary component are separate, solid phase components that are physically mixed with each other to form the catalyst bed system and said catalyst bed system is subjected to a cyclic operation that comprises at least non-oxidative dehydrogenation in a first stage and reducing and/or oxidizing reaction conditions in a second stage.