Rhoaium/inorganic iodine compound catalyst system for reducing impurity in acetic acid production

Rhoaium/inorganic iodine compound catalyst system for reducing impurity in acetic acid production

CN
  • CN 1,288,124 C
  • Filed: 04/18/2003
  • Issued: 12/06/2006
  • Est. Priority Date: 04/18/2003
  • Status: Active Grant
First Claim
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1. A rhodium/inorganic iodide catalyst system for reducing impurities in acetic acid production, wherein the acetic acid preparation adopts methanol and CO to react in a liquid reaction medium, and the liquid reaction medium comprises:

  • rhodium, inorganic iodide, methyl iodide, water, acetic acid and methyl acetate, and is characterized in that;

    the inorganic iodide is a mixture of more than two inorganic iodides in IA group and IIA group of the periodic table of elements, and the medium proportion of the liquid reaction medium is as follows;

    the catalyst has effective amount of rhodium, the concentration of iodide ion is 2wt-15wt%, water is 3wt-7wt%, methyl iodide is 8wt-15wt%, methyl acetate is 0.5wt-30wt%, and the rest is acetic acid.

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