The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 09, 2019
Filed:
Sep. 13, 2013
Asahi Kasei Chemicals Corporation, Tokyo, JP;
ASAHI KASEI CHEMICALS CORPORATION, Tokyo, JP;
Abstract
It is an object of the present invention to provide a composite oxide catalyst which can suppress the generation of COand CO and improve the yield of an unsaturated nitrile in a method for subjecting propane or isobutane to a vapor-phase catalytic ammoxidation reaction to produce a corresponding unsaturated nitrile, and a method for producing the composite oxide catalyst, and a method for producing an unsaturated nitrile using the composite oxide catalyst. A composite oxide catalyst used for a vapor-phase catalytic oxidation reaction or vapor-phase catalytic ammoxidation reaction of propane or isobutane, the composite oxide catalyst comprising a composite oxide represented by the following composition formula (1):MoVSbNbWZO  (1),wherein the component Z is one or more element selected from the group consisting of La, Ce, Pr, Yb, Y, Sc, Sr, and Ba; a, b, c, d, e, and n represent atomic ratios of the elements; and 0.1≤a<0.2, 0.15≤b≤0.5, 0.01≤c ≤0.5, 0≤d≤0.4, 0≤e≤0.2, and 0.60<a/b<1.00.