Prevention of polymer formation in dehydrogenation of p-ethyltol

Details Prevention of polymer formation in dehydrogenation of p-ethyltol Prevention of polymer formation in dehydrogenation of p-ethyltol

1980-03-03

1983-11-22

Warren, Charles F.

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

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

585442, 585 2, 585950, C07C 700

Patent

active

044170840

ABSTRACT:
In the catalytic dehydrogenation of p-ethyltoluene to p-methylstyrene, popcorn polymer forms and builds up in the condenser, shortly plugging it. This is prevented by adding minor amounts of H.sub.2 S continuously to the gaseous product effluent entering the condenser.

REFERENCES:
patent: 2407861 (1946-09-01), Wolk
patent: 3585250 (1971-06-01), Pasternak et al.

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