Sulfolene hydrogenation

Details Sulfolene hydrogenation Sulfolene hydrogenation

1980-07-14

1981-06-23

Siegel, Alan

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07O33348

Patent

active

042752183

ABSTRACT:
A process for converting sulfolene compounds to sulfolane compounds comprising contacting at least one sulfolene compound with hydrogen in the presence of a metal hydrogenation catalyst and an effective amount of ammonia as an SO.sub.2 neutralizer or scavenger. The addition of ammonia increases conversion of sulfolene to sulfolane, improves product color, and reduces polymer formation during hydrogenation. In a preferred embodiment, the ammonia is admixed with the hydrogen prior to contacting with the sulfolene compound.

REFERENCES:
patent: 2451298 (1948-10-01), Morris et al.
patent: 3322686 (1967-05-01), Brown et al.
patent: 3928385 (1975-12-01), Huxley

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