Catalysts selective for the preparation of mixed ketones from a mixture of carboxylic acids
AssigneeEastman Chemical Company
InventorsAlexey V. Ignatchenko, Michelle Manichanh King, Zhufang Liu, Calvin W. Whiddon
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Abstract
Mixed ketones are prepared from a mixture of carboxylic acids in a process with high selectivity by using an improved catalyst. The catalyst contains zirconium dioxide or zirconium dioxide and titanium dioxide, and a Group 1 or 2 metal silicate or phosphate salt. The new catalyst is more selective toward the formation of the mixed ketone, as opposed to a symmetrical ketone.
Claims17
A catalyst composition comprising (a) zirconium dioxide and (b) a salt comprising a cation selected from Groups 1 and 2 of the Periodic Table of Elements and an anion selected from silicate and phosphate,
- wherein the zirconium dioxide has a surface area of 1 to 150 m2/g, and
- wherein 10 to 90% of the surface area of the zirconium dioxide is covered with the salt.
A catalyst composition comprising (a) a mixture of zirconium dioxide and titanium dioxide, and (b) a salt comprising a cation selected from Groups 1 and 2 of the Periodic Table of Elements and an anion selected from silicate and phosphate,
- wherein the mixture of zirconium dioxide has a surface area of 1 to 150 m2/g, and
- wherein 10 to 90% of the surface area of the mixture of zirconium dioxide and titanium dioxide is covered with salt.
Dependencies are inferred from the claim text.