Process for the selective hydrogenation of alkynes

Details Process for the selective hydrogenation of alkynes Process for the selective hydrogenation of alkynes

C - Chemistry, Metallurgy

07

C

260/702.1, 260/7

C07C 7/167 (2006.01) B01J 23/44 (2006.01) B01J 23/52 (2006.01) C07C 5/08 (2006.01) C07C 11/167 (2006.01) B01J 37/02 (2006.01) B01J 37/06 (2006.01)

Patent

CA 1290354

ABSTRACT OF THE DISCLOSURE Alkynes are selectively hydrogenated in alkene rich hydrocarbon feeds, such as 1,3-butadiene-rich C4 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.

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