Dehydrogenation catalysts

Details Dehydrogenation catalysts Dehydrogenation catalysts

1976-08-30

1977-12-20

Douglas, Winston A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252443, 252468, C07C 1500, C07C 1510, B01J 2394

Patent

active

040641872

ABSTRACT:
Self-regenerative dehydrogenation catalysts containing major proportions of Fe.sub.2 O.sub.3 and ZnO and lesser amounts of alkali metal chromate and, optionally, cuprous oxide promoters together with a basic potassium-water-gas reaction promoter are improved in several respects when the basic potassium promoter is increased to 18-35 percent calculated as K.sub.2 CO.sub.3 based on the active ingredients. Significantly lower ratios of steam to hydrocarbon are thereby made practical and in the dehydrogenation of meta and paraethyltoluene to vinyltoluene, less "popcorn" polymer is formed in the product stream with these high K.sub.2 CO.sub.3 catalysts.

REFERENCES:
patent: 3849339 (1974-11-01), Turley et al.
patent: 3872027 (1975-03-01), Christmann et al.

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