Process for improving the catalytic activity of catalyst systems for reductive amination of aliphatic cyanoaldehydes to aliphatic diamines

Process for improving the catalytic activity of catalyst systems for reductive amination of aliphatic cyanoaldehydes to aliphatic diamines

  • CN 102,781,905 A
  • Filed: 07/30/2010
  • Published: 11/14/2012
  • Est. Priority Date: 07/31/2009
  • Status: Active Grant
First Claim
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1. be used to improve the method for the catalytic activity of the catalyst system that is aliphatic diamine, said method comprising the steps of aliphatic cyanic acid aldehyde reduction amination:

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    500 ℃

    temperature continue to have greater than time of 1 hour reduction catalysts active one or more heterogeneous based on the catalyst system of metal on feed ammonia, optional hydrogen and one or more optional solvents;

    The yield of wherein said one or more heterogeneous catalyst systems based on metal is less than 90%, based on the molar yield of cyanic acid aldehyde to diamines;

    WithImprove the catalytic activity of said one or more heterogeneous catalyst systems based on metal thus.

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