Removal of .alpha.-methyl styrene from cumene

Details Removal of .alpha.-methyl styrene from cumene Removal of .alpha.-methyl styrene from cumene

1998-04-20

1999-05-18

Caldarola, Glenn

Chemistry of hydrocarbon compounds

Adding hydrogen to unsaturated bond of hydrocarbon, i.e.,...

Hydrocarbon is contaminant in desired hydrocarbon

585264, 585269, 585804, 203DIG6, C07C7/163;5/11

Patent

active

059051787

ABSTRACT:
A process for the removal of .alpha.-methyl styrene from admixtures with cumene by hydrogenation in a catalytic distillation hydrogenation to selectively hydrogenate the side chains and produce cumene is disclosed. The crude cumene may be the byproduct of the cumene oxidation to produce phenol. The crude cumene also contains acetone, benzene, ethyl benzene and high and low boiling carbonyls, which are either removed simultaneously with the hydrogenation/distillation or removed first followed by the selective catalytic distillation hydrogenation.

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patent: 3646235 (1972-02-01), Little et al.
patent: 4158611 (1979-06-01), Cooke
patent: 4334107 (1982-06-01), Van Peppen
patent: 4410755 (1983-10-01), Fisher et al.
patent: 4443559 (1984-04-01), Smith, Jr.
patent: 4822936 (1989-04-01), Maurer et al.
patent: 5245090 (1993-09-01), DeCaria et al.
Hydrogenate AMS to Cumene, Hydrocarbon Processing, Int. Ed., vol. 59 #11, 1980 pp. 179-183.

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