Process for para-ethyltoluene dehydrogenation

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

1984-09-14

1986-06-03

Doll, John

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

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

585444, C07C 1500

Patent

active

045931348

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 bismuth compound, e.g., bismuth trioxide. Utilization of particular amounts of bismuth 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: 2408139 (1946-09-01), Gutzeit
patent: 2870228 (1959-01-01), Armstrong et al.
patent: 3409696 (1968-11-01), Minnis et al.
patent: 3904552 (1975-09-01), O'Hara
patent: 4064187 (1977-12-01), Soderquist et al.
patent: 4404123 (1983-09-01), Chu

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