Tin promoted platinum catalyst for carbonylation of lower alkyl alcohols
AssigneeEastman Chemical Company
InventorsJoseph Robert Zoeller, Andy Hugh Singleton, Gerald Charles Tustin, Donald Lee Carver
Life of this patent
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Abstract
A carbonylation catalyst useful for producing esters and carboxylic acids in a vapor phase carbonylation process, wherein the catalyst includes a solid component having a catalytically effective amount of platinum and tin associated with a solid catalyst support material and a vaporous halide promoter component.
Claims16
A carbonylation catalyst comprising a solid component comprising a catalytically effective amount of a platinum compound and a tin compound associated with a solid catalyst support material and a vaporous component comprising a catalytically effective amount of a halogen promoter, wherein said platinum and tin compounds have a valency greater than zero.
A carbonylation catalyst comprising a solid component comprising from about 0.1 weight percent to about 10 weight percent of a platinum compound, as metal, and from about 0.1 weight percent to about 10 weight percent of a tin compound, as a metal, associated with an activated carbon support material and a vaporous component comprising a catalytically effective amount of a halogen promoting component selected from the group consisting of hydrogen iodide, methyl iodide, ethyl iodide, 1-iodopropane, 2-iodobutane, 1-iodobutane, hydrogen bromide, methyl bromide, ethyl bromide, benzyl iodide and mixtures thereof, wherein said platinum and tin compounds have a valency greater than zero and wherein said weight percents are based on the total weight of the solid component.
A carbonylation catalyst comprising a solid component comprising from about 0.1 weight percent to about 2 weight percent of platinum, as metal, the platinum being present as a platinum selected from the group consisting of dichlorodiammine platinum;
- dichlorobis(triphenylphosphine) platinum;
- dichloro(1,5-cyclooctadiene)platinum;
- dichlorobis(benzonitrile)platinum, dihydrogen hexachloroplatinate and mixtures thereof, and from about 0.1 weight percent to percent to about 2 weight percent of tin, as metal, the tin being present as a tin compound selected from the group consisting of tin (II) chloride, tin (II) oxalate and mixtures thereof which are associated with an activated carbon support material, and a vaporous component comprising at least one halide promoter selected from the group consisting of hydrogen iodide, methyl iodide, ethyl iodide, 1-iodopropane, 2-iodobutane, 1-iodobutane, hydrogen bromide, methyl bromide, ethyl bromide, benzyl iodide and mixtures thereof, and wherein said weight percents are based on the total weight of the solid component.
A carbonylation catalyst comprising a solid component having from about 0.1 weight percent to about 2 weight percent of a platinum compound, as metal, and from about 0.1 weight percent to about 2 weight percent of a tin compound, as metal, associated with an activated carbon support material and a vaporous component comprising a catalytically effective amount of a halogen promoting component selected from the group consisting of hydrogen iodide, methyl iodide, ethyl iodide, 1-iodopropane, 2-iodobutane, 1-iodobutane, hydrogen bromide, methyl bromide, ethyl bromide, benzyl iodide and mixtures thereof, wherein said platinum and tin compounds have a valency greater than zero and wherein said weight persents are based on the total weight of the solid component.
Dependencies are inferred from the claim text.