Systems and methods for isoprene purification
AssigneeSabic Global Technologies B.V.
InventorErnesto Uehara
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Abstract
Methods for the selective hydrogenation of acetylenic compounds in a product stream that includes isoprene. A method of selectively hydrogenating an acetylenic hydrocarbon in the presence of isoprene may include obtaining a hydrocarbon mixture comprising an acetylenic hydrocarbon, isoprene, and butadiene or cyclopentadiene, or both. If cyclopentadiene is present, the hydrocarbon mixture may comprise greater than 2 wt. % cyclopentadiene. The method may further include contacting the hydrocarbon mixture and hydrogen (H2) with a hydrogenation catalyst under reaction conditions that are more selective to the hydrogenation of the acetylenic hydrocarbon than the isoprene.
Claims17
A method of selectively hydrogenating an acetylenic hydrocarbon in the presence of isoprene, the method comprising:
- (a) obtaining a hydrocarbon mixture comprising (i) an acetylenic hydrocarbon, (ii) isoprene, (iii) butadiene and (iv) greater than 10 wt. % cyclopentadiene;
- and
- (b) contacting the hydrocarbon mixture and hydrogen (H2) with a hydrogenation catalyst comprising platinum under reaction conditions that are more selective to hydrogenation of the acetylenic hydrocarbon than the isoprene to produce an effluent comprising a hydrogenated compound.
Dependencies are inferred from the claim text.