Selective oligomerization of isobutene

摘要

A process for oligomerizing isobutene comprises contacting a feedstock comprising isobutene with a catalyst comprising a MCM-22 family molecular sieve under conditions effective to oligomerize the isobutene, wherein said conditions including a temperature from about 45° C. to less than 140° C. The isobutene may be a component of a hydrocarbon feedstock containing at least one additional C4 alkene. In certain aspects, isobutene oligomers are separated from a first effluent of the oligomerization to produce a second effluent comprising at least one n-butene. The second effluent can be contacted with an alkylation catalyst to produce sec-butylbenzene.

主权项

1. A process for oligomerizing isobutene, the process comprising contacting a feedstock comprising 2 wt. % to 5 wt. % isobutene with a catalyst comprising a MCM-22 family molecular sieve under conditions effective to oligomerize said isobutene, said conditions including a temperature from 45° C. to less than 140° C., to produce a first effluent comprising isobutene oligomers and less than 0.3 wt. % isobutene; wherein the feedstock comprises at least 90 wt % of n-butenes and the contacting step oligomerizes no more than 12 wt % of the n-butenes.