Separating a solvent from a nickel catalyst by distillation

Separating a solvent from a nickel catalyst by distillation

  • CN 105,531,257 A
  • Filed: 07/16/2014
  • Published: 04/27/2016
  • Est. Priority Date: 07/17/2013
  • Status: Active Grant
First Claim
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1. , for a method for evaporating solvent from the catalyst solution comprising solvent and catalyzer, wherein said solvent comprises 2-pentenenitrile and 3 pentene nitrile, and wherein said catalyzer comprises nickel and bidentate phosphorus part, and wherein said method comprises the following steps:

  • A described catalyst solution is incorporated in distillation zone by ();

    AndB () evaporating solvent is to form the catalyst solution comprising the solvent dilution of described catalyzer, 2-pentenenitrile and 3 pentene nitrile in described distillation zone, the ratio simultaneously maintaining 3 pentene nitrile and 2-pentenenitrile in the catalyst solution of described solvent dilution is 14 or less.

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