Olefin isomerisation process using metallic catalysts impregnate

Details Olefin isomerisation process using metallic catalysts impregnate Olefin isomerisation process using metallic catalysts impregnate

1994-07-29

1996-10-29

Pal, Asok

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

By double-bond-shift isomerization

585664, 585671, C07C 523

Patent

active

055698069

ABSTRACT:
The invention concerns a process for the isomerisation of less substituted olefins to more substituted external olefins and/or internal olefins in the absence of diolefins, in the presence of a palladium based catalyst deposited on a support. Before loading it into the reactor, said catalyst is treated with at least one sulphur-containing compound which is dissolved in a solvent then activated in a neutral or reducing atmosphere between 20.degree. C. and 300.degree. C., 1 and 50 bars and with a VVH of 50 to 600 h.sup.-1. The catalyst, containing 0.05% to 10% by weight of sulphur, is brought into contact with the feedstock and hydrogen between 20.degree. C. and 200.degree. C., 1 and 50 bars, a VVH of 0.5 to 10 h.sup.-1 and a H.sub.2 /olefin molar ratio of 0.01 to 1.

REFERENCES:
patent: 3290404 (1966-12-01), Howman et al.
patent: 3531545 (1970-09-01), Garner et al.
patent: 4132745 (1979-01-01), Amigues et al.
patent: 4724274 (1988-02-01), Boitiaux et al.

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