Selective hydrogenation of alpha-methyl-styrene to cumene

Selective hydrogenation of alpha-methyl-styrene to cumene

  • CN 1,793,089 A
  • Filed: 12/19/2005
  • Published: 06/28/2006
  • Est. Priority Date: 12/20/2004
  • Status: Active Application
First Claim
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1. alpha-methyl styrene (AMS) is selectively hydrogenated into the method for cumene, comprises:

  • A kind of incoming flow that comprises AMS in cumene is contacted with nickel in the presence of hydrogen in the first fixed bed catalyst district, make 70~

    95% of this AMS change into cumene;

    The effluent liquid of first reaction zone is contacted with precious metal in the presence of hydrogen in the second fixed bed catalyst district, the AMS in the first reaction zone effluent liquid is transformed, obtain a kind of clean reactor stream fluid that comprises the cumene of essentially no AMS.

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