Method for carbonylation of lower aliphatic alcohols using tin promoted iridium catalyst
AssigneeEastman Chemical Company
InventorsJoseph Robert Zoeller, Andy Hugh Singleton, Gerald Charles Tustin, Donald Lee Carver
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Abstract
A vapor-phase carbonylation method for producing esters and carboxylic acids from reactants comprising lower alkyl alcohols, lower alkyl alcohol generating compounds, and mixtures thereof. The method includes contacting the reactants and carbon monoxide in a carbonylation zone of a carbonylation reactor under vapor-phase conditions with a catalyst having a catalytically effective amount of iridium and tin associated with a solid carrier material.
Claims20
A vapor-phase carbonylation method for producing esters and carboxylic acids from reactants comprising lower alkyl alcohols, lower alkyl alcohol generating compositions and mixtures thereof, said method comprising contacting the reactants and carbon monoxide with a catalyst in a carbonylation zone of a carbonylation reactor under vapor-phase conditions and wherein said catalyst includes a catalytically effective amount of iridium and tin associated with a solid activated carbon carrier material.
A vapor-phase carbonylation method for producing acetic acid, methyl acetate or a mixture thereof comprising the steps of:
- a. under vapor-phase carbonylation conditions of temperature and pressure, contacting a gaseous mixture comprising methanol, carbon monoxide, and a halide promoter with a solid catalyst in a carbonylation zone of a carbonylation reactor wherein said solid catalyst comprises from about 0.01 to about 10 weight % of iridium and from about 0.01 to about 10 weight % tin associated with a solid activated carbon carrier material and wherein the weight % of the iridium and tin are based on the total weight of the catalyst;
- and
- b. recovering acetic acid, methyl acetate or a mixture thereof from the gaseous product.
A vapor-phase carbonylation method for producing acetic acid, methyl acetate or a mixture thereof comprising the steps of:
- a. under vapor-phase carbonylation conditions of temperature and pressure, contacting a gaseous mixture comprising methanol, carbon monoxide, and a halide promoter with a solid catalyst in a carbonylation zone of a carbonylation reactor wherein said solid catalyst comprises from about 0.1 weight % to about 2 weight % of iridium and from about 0.1 weight % to about 5 weight % tin associated with a solid activated carbon carrier material and wherein the weight % of the iridium and tin are based on the total weight of the catalyst;
- and
- b. recovering acetic acid, methyl acetate or a mixture thereof from the gaseous product.
Dependencies are inferred from the claim text.