Method for preparing cyclopentanol by hydrating cyclopentene

Method for preparing cyclopentanol by hydrating cyclopentene

  • CN 106,674,003 A
  • Filed: 11/09/2015
  • Published: 05/17/2017
  • Est. Priority Date: 11/09/2015
  • Status: Active Grant
First Claim
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1. a kind of method of Preparation of Cyclopantanol by Hydration of Cyclopentene, it is characterised in that:

  • Including procedure below:



    1)

    Cyclopentene carries out addition reaction in the presence of modified sulfonic group cation exchange resin and generates cyclopentyl acetate with acetic acid, and cyclopentene is 1 with the molar ratio of acetic acid:

    1~

    10, cyclopentene liquid quality air speed is 0.5h-1

    3.5h-1, reaction temperature is 50 DEG C~

    150 DEG C, and reaction pressure is 0.1MPa~

    2.0MPa, and modified sulfonic group cation exchange resin soaks successively conventional sulfonic group cation exchange resin and is obtained by toluene, methyl iso-butyl ketone (MIBK);



    2)

    Step(

    1)

    The material for obtaining enters rectifying column, azeotropic mixture is formed in rectifying column bottom and water, in the presence of the conventional sulfonic group cation exchange resin catalyst for filling in rectifier, cyclopentyl acetate and water in the azeotropic mixture of rectifying column bottom is hydrolyzed reaction, overhead extraction product cyclopentanol, bottom of towe produces acetic acid, and water is 1~

    25 with the mol ratio of cyclopentyl acetate:

    1, the liquid quality air speed of cyclopentyl acetate is 0.5h-1

    2.5h-1

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