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US 4,055,514 AGranted
Catalyst for preparation of 4-cyanothiazole
AssigneeMerck & Co., Inc.
InventorsGlenn R. Elion, Arthur E. Klink
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Abstract
4-Cyanothiazole is prepared by the catalytic vapor phase ammoxidation of 4-methylthiazole using a novel catalyst composition comprising a cobalt molybdate catalyst wetted with different levels of potassium hydroxide. The process affords high selectivity to the desired 4-cyanothiazole.
Claims2
An ammoxidation catalyst composition prepared by the process of treating cobalt molybdate with a solution of potassium hydroxide, drying and firing for about 4 hours at 450.degree. C, wherein the molybdenum cobalt molar ratio is from 1.20:1.00 to 1.05:1.00 and potassium cobalt molar ratio from 0.001:1.0 to 0.1:1.0.
Dependencies are inferred from the claim text.