Multi-stage olefin isomerization

Details Multi-stage olefin isomerization Multi-stage olefin isomerization

1991-05-14

1994-03-08

Pal, Asok

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

By skeletal isomerization

585664, 502344, C07C 522

Patent

active

052929850

ABSTRACT:
A multi-stage process for isomerizing olefin compounds to the corresponding product olefin compounds is provided. The isomerization catalyst comprises an oxygen treated mixture of an alkali metal on a calcined support. The multi-stage process is particularly useful for isomerizing 5-vinyl-2-norbornene to 5-ethylidiene-2-norbornene. The catalyst is very active and highly selective and resistent to catalyst poisons. The process contacts the catalyst with an isomerizable olefin in at least two reaction stages to yield the corresponding product olefin compound. The reaction stages differ in temperature, catalyst activity or both.

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