Selective hydrogenation

Details Selective hydrogenation Selective hydrogenation

1979-04-06

1980-10-14

Niebling, John F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252438, C11C 312

Patent

active

042280885

ABSTRACT:
The selectivity of the hydrogenation of compounds containing more than one double carbon-carbon bond in the presence of a metallic catalyst of group VIII of the periodic system is improved and trans isomer formation is reduced by treating the catalyst with a basic compound before addition of the catalyst to the substrate or in situ.
The basic compound is a quaternary ammonium hydroxide, an alkali or alkaline earth hydroxide or ammonium hydroxide, a salt with a weak acid of such a hydroxide or an alcoholate of the cations of these hydroxides.

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patent: 1893155 (1933-01-01), Bennett
patent: 3117939 (1964-01-01), Royce
patent: 3197418 (1965-07-01), Maebashi
patent: 3896051 (1975-07-01), Mabuchi et al.
patent: 3919271 (1975-04-01), Parshall
patent: 3980720 (1976-09-01), Mabuchi et al.
patent: 4038295 (1977-07-01), Stern et al.
patent: 4117242 (1978-09-01), Fozzard

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