Isomerization of butene-1 to butene-2 in isobutylene

Details Isomerization of butene-1 to butene-2 in isobutylene Isomerization of butene-1 to butene-2 in isobutylene

1983-05-31

1984-03-06

Gantz, Delbert E.

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

By double-bond-shift isomerization

585664, 585850, 585855, C07C 530, C07C 701

Patent

active

044356099

ABSTRACT:
Isobutylene containing a minor amount, e.g. 0.06-0.10 wt %, of n-butene-1 is subjected to gas phase isomerization using hydrogen and Group VIII metal catalyst to convert the butene-1 to butene-2 with at least 65% conversion and no more than 0.3% hydrogenation of the isobutylene; butene-2 is more readily separated from the isobutylene by distillation. Isomerization conditions applied are defined by a pressure of 3 to 5 bars gauge, a temperature of from 40.degree. to 50.degree. C., a space velocity of from 150 to 300 vol/vol/hour, a mass velocity of from 1.1 to 1.5 metric tons/m2/hour and a hydrogen/feed volume ratio of not more than 2.5%.

REFERENCES:
patent: 2428516 (1947-10-01), Drennen
patent: 3531545 (1970-09-01), Garner et al.
patent: 3758604 (1973-09-01), Sprecher et al.
patent: 4132745 (1979-01-01), Amignes et al.

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