Catalysts for para-ethyltoluene dehydrogenation

Details Catalysts for para-ethyltoluene dehydrogenation Catalysts for para-ethyltoluene dehydrogenation

B - Operations, Transporting

01

J

252/74, 260/682.

B01J 23/86 (2006.01) B01J 23/78 (2006.01) C07C 5/333 (2006.01) C07C 5/42 (2006.01) C07C 15/02 (2006.01)

Patent

CA 1189849

ABSTRACT Para-ethyltoluene dehydrogenation catalyst compositions, as well as processes for using such catalysts, are provided. The catalyst compositions comprise a catalytically active iron compound, e.g., iron oxide; a potassium catalyst promoter, e.g., potassium carbonate; and an optional chromium compound stabilizer, e.g., chromic oxide. Utilization of iron oxide in the form of particles having particle sizes which range from 0.05 to 0.5 microns in dehydrogenation catalyst compositions of this type will provide a catalyst especially suitable for the dehydrogenation, and particularly steam dehydrogenation, of para-ethyltoluene to selectively form para-methylstyrene in improved yields.

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