Process for the selective hydrogenation of compounds comprising

Details Process for the selective hydrogenation of compounds comprising Process for the selective hydrogenation of compounds comprising

1993-11-24

1995-12-12

Achutamurthy, P.

Chemistry of hydrocarbon compounds

Adding hydrogen to unsaturated bond of hydrocarbon, i.e.,...

Partial

585271, C07C 505

Patent

active

054751748

ABSTRACT:
The invention concerns a process for the selective hydrogenation of polyunsaturated cyclic compounds comprising at least one endocyclic carbon-carbon double bond and at least one terminal exocyclic carbon-carbon double bond, said double bonds not being conjugated, to form a mixture essentially containing the saturated ring compound and comprising at least one terminal exocyclic double bond, the process being carried out in the presence of hydrogen under a pressure of from 1 to 10 MPa and at a temperature of from 0.degree. to 200.degree. C., and in the presence of a catalyst including a support and (a) from 0.1 to 5% by weight of at least one metal from group VIII (iridium, osmium, nickel, palladium, platinum and rhodium) and (b) from 0.01 to 15% by weight of at least one metal from group IVa (tin, germanium and lead), the molar ratio between metals of group VIII and group IVa being between 0.3 and 3. The process is used for the hydrogenation of 4-vinylcylcohexene to vinylcyclohexane.

REFERENCES:
patent: 3773654 (1973-11-01), Rausch
patent: 4079092 (1978-03-01), Hayes et al.
patent: 4152365 (1979-05-01), Drehman
Chemical Abstracts, vol. 82, No. 3, 20 Jan. 1975, Abstract No. 16404p.

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