Method for preparing 1, 2-cyclohexane dioctyl phthalate diisooctyl by hydrogenation

Method for preparing 1, 2-cyclohexane dioctyl phthalate diisooctyl by hydrogenation

  • CN 102,898,309 A
  • Filed: 11/13/2012
  • Published: 01/30/2013
  • Est. Priority Date: 11/13/2012
  • Status: Active Application
First Claim
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1. the method for standby 1, the 2-cyclohexane cyclohexanedimethanodibasic di-isooctyl of a Hydrogenation is characterized in that:

  • Reaction system is comprised of dimixo-octyl phthalate, hydrogen and catalyzer, and reaction conditions is;

    Temperature of reaction is 100 ~ 250 ℃

    , and reaction pressure is 5 ~ 18MPa, H 2With the volume ratio of dimixo-octyl phthalate be 2000 ~ 200;

    1, The liquid air speed of dimixo-octyl phthalate is 0.1 ~ 2.5h -1Described catalyzer is with Al 2O 3Be carrier, active ingredient is selected from and is among Ru, Pd, the Ni one or more, and the loading of active ingredient is the 1-3% of catalyst weight;

    Catalyzer is used H before use 2In-situ reducing activates.

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