Process for the selective hydrogenation of polyunsaturated hydro

Details Process for the selective hydrogenation of polyunsaturated hydro Process for the selective hydrogenation of polyunsaturated hydro

1982-11-02

1985-05-14

Gantz, Delbert E.

Chemistry of hydrocarbon compounds

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

Hydrocarbon is contaminant in desired hydrocarbon

585260, 585261, 208143, C07C 503, C07C 508

Patent

active

045173958

ABSTRACT:
A process for the selective hydrogenation of hydrocarbons having three and more carbon atoms and several double bonds or with triple bonds in monoene-containing hydrocarbon mixtures is described. These compounds are selectively hydrogenated to monoenes in a practically quantitative fashion. Before beginning the hydrogenation, a small amount of carbon monoxide and once to twice the stoichiometric quantity of hydrogen are homogeneously dissolved in the hydrocarbon mixture. The mixture is hydrogenated as a homogeneous liquid phase on a fixed palladium catalyst under a moderately high pressure and at a moderately high temperature. No isomerization can be found in the monoenes and no side reactions or secondary reactions occur.

REFERENCES:
patent: 3325556 (1967-06-01), De Rosset et al.
patent: 3674886 (1972-07-01), Komatsu et al.
patent: 3743684 (1973-07-01), Johnson et al.
patent: 3842137 (1974-10-01), Libers et al.
patent: 3912789 (1975-10-01), Frevel et al.
patent: 4020119 (1977-04-01), Johnson et al.

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