Olefin oligomerization process

Olefin oligomerization process

  • CN 1,960,955 B
  • Filed: 05/26/2005
  • Issued: 07/03/2013
  • Est. Priority Date: 06/01/2004
  • Status: Active Grant
First Claim
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1. one kind is used for the oligomeric method that comprises the alkenes raw material of 1-100ppm volume sulfur-containing molecules, and this method comprises:

  • (a) raw material is contacted with the catalyzer that comprises crystalline molecular sieve under the olefin oligomerization condition, described molecular sieve have the determined hole of one-dimensional passage that formed by the 10-of tetrahedral coordination atom unit ring and(b) raw material is contacted with the catalyzer that comprises the crystalline molecular sieve with hole of being determined by more-dimensional channels under the olefin oligomerization condition,Wherein (a) carries out before at (b),Wherein in step (b) raw material of contact catalyst be the starting raw material that contacts in step (a) with catalyzer under the oligomeric condition andWherein sulfur-containing molecules be selected from methyl mercaptan, ethanethio, propyl group mercaptan, dimethyl sulphide, diethyl sulfide, ethyl-methyl sulphur, TwoJust-propylthio Ether, 1-butane mercaptan, ethyl-methyl disulphide, dimethyl disulphide, tetramethylene sulfide and its mixture.

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