Sulfolene hydrogenation

Details Sulfolene hydrogenation Sulfolene hydrogenation

1980-02-12

1981-08-25

Siegel, Alan

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D33348

Patent

active

042860997

ABSTRACT:
Prior to hydrogenation to produce sulfolane, a sulfolene feed containing sulfur-containing catalyst poisons is contacted with used and/or at least partially spent Raney nickel catalyst under conditions which substantially remove and/or render innocuous the catalyst poisons. The pretreatment removes sulfur dioxide and polymeric sulfones from the sulfolene which would otherwise contaminate and deactivate the fresh catalyst employed in the hydrogenation.

REFERENCES:
patent: 2578565 (1951-12-01), Mahan et al.
patent: 3152144 (1964-10-01), Middlebrook
patent: 3417103 (1968-12-01), Warner
patent: 3514469 (1970-05-01), Phillips et al.
patent: 3928385 (1975-12-01), Huxley
Ellis, "Hydrogenation of Oils", 2nd ed., 1919, p. 161.

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