Chemistry of hydrocarbon compounds – Adding hydrogen to unsaturated bond of hydrocarbon – i.e.,... – Hydrocarbon is contaminant in desired hydrocarbon
Patent
1987-12-30
1989-05-16
Davis, Curtis R.
Chemistry of hydrocarbon compounds
Adding hydrogen to unsaturated bond of hydrocarbon, i.e.,...
Hydrocarbon is contaminant in desired hydrocarbon
C07C 503
Patent
active
048312002
ABSTRACT:
Alkynes are selectively hydrogenated in alkene rich hydrocarbon feeds, such as 1,3-butadiene-rich C.sub.4 cuts, by passing the hydrocarbon feed at least partially in liquid phase over a palladium-based catalyst in the presence of hydrogen, preferably in trickle mode, followed by passing the effluent, at least partially in liquid phase preferably containing about 300-400 ppmw alkynes, over a copper-based catalyst in the presence of hydrogen thereby producing a hydrocarbon product of significantly reduced alkyne concentration.
REFERENCES:
patent: 3859377 (1975-01-01), Gross et al.
patent: 3898298 (1975-08-01), Desiderio et al.
patent: 4247725 (1981-01-01), Ohmori et al.
patent: 4367353 (1983-01-01), Inglis
patent: 4517395 (1985-05-01), Obenaus et al.
Cahen Raymond M.
De Clippeleir Georges E. M. J.
Debras Guy L. G.
Grootjans Jacques F.
Abokhair John K.
Cheairs M. Norwood
Davis Curtis R.
Labofina S.A.
Montgomery Mark A.
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