Process For Preparing A C4-Olefin Mixture By Selective Hydrogenation And Metathesis Process For Using This Stream
AssigneeBASF SE
InventorsJurgen Stephan, Andreas Brodhagen, Markus Schubert, Frank Poplow, Michael Roper, Thomas Hill
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Abstract
A C4-olefin mixture having a 1,3-butadiene content of from 100 to 500 ppm and a content of 1,2-dienes of less than 10 ppm is described. The present invention further provides a process for preparing this C4-olefin mixture and provides for its use in a metathesis reaction for preparing 2-pentene and/or 3-hexene.
Claims19
1-19. (canceled)
A C4-olefin mixture comprising a 1,3-butadiene content of from 100 to 500 ppm and a content in cumulated dienes of 1 to 10 ppm, wherein the 1-butene content in the mixture is at least 30% by weight, based on the mixture.
A process for preparing a C4-olefin mixture comprising a 1,3-butadiene content of from 100 to 500 ppm and a content in cumulated dienes of less than 10 ppm,
- by hydrogenation of a C4 stream coming from steam crackers,
- wherein the hydrogenation in the first hydrogenation stage is carried out over a catalyst which comprises at least one metal of group VIII of the Periodic Table of the Elements as hydrogenation metal and, in addition, a promoter on an oxidic support, with at least 80% of the metal of group VIII of the Periodic Table of the Elements being distributed essentially homogeneously in a layer between the surface of the catalyst and a penetration depth corresponding to not more than 80% of the radius of the catalyst, calculated from the surface of the catalyst, and the promoter being distributed essentially homogeneously over the entire cross section of the catalyst.
Dependencies are inferred from the claim text.