Process for para-ethyltoluene dehydrogenation

Details Process for para-ethyltoluene dehydrogenation Process for para-ethyltoluene dehydrogenation

1984-09-14

1985-12-24

Doll, John

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

Having alkenyl moiety, e.g., styrene, etc.

585444, C07C 264

Patent

active

045608199

ABSTRACT:
Para-ethyltoluene dehydrogenation catalyst compositions and 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; an optional chromium compound stabilizer, e.g., chromic oxide, and a calcium compound, e.g., calcium oxide. Utilization of particular amounts of calcium compound in dehydrogenation catalyst compositions of this type will provide a catalyst especially suitable for promoting the selective dehydrogenation of para-ethyltoluene to form para-methylstyrene in improved yields.

REFERENCES:
patent: 2891956 (1959-06-01), Oberun et al.
patent: 3100234 (1983-08-01), Lee
patent: 3306942 (1967-02-01), Lee
patent: 3409688 (1968-11-01), Pan
patent: 3904552 (1975-09-01), O'Hara
patent: 4467046 (1984-08-01), Smith et al.

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