The removal of aldehydes in acetic acid preparation process

The removal of aldehydes in acetic acid preparation process

  • CN 108,290,815 A
  • Filed: 12/02/2016
  • Published: 07/17/2018
  • Est. Priority Date: 12/03/2015
  • Status: Active Application
First Claim
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1. a kind of technique comprising:

  • Methanol and carbon monoxide is set to be produced including the carbonylation of acetic acid and acetaldehyde in the presence of liquid reaction medium in being enough to be formedIt is in contact under the carbonylation conditions of object, wherein the liquid reaction medium includes:

    Carbonylating catalyst selected from rhodium catalyst, iridium catalyst and palladium catalyst;

    WithWith water of the total weight water concentration of liquid reaction medium in the range of 1wt.%-14wt.%;

    AndAt least part of described carbonylation product or derivatives thereof and poromerics is set to be in contact with selectively by the secondAt least part of aldehyde is converted into crotonaldehyde, wherein the poromerics includes silicoaluminophosphate (SAPO).

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