Composite oxide catalyst, method for producing the same, and method for producing unsaturated nitrile
US10343146B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2013 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Sep 13, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/52
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
It is an object of the present invention to provide a composite oxide catalyst which can suppress the generation of CO2 and 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): Mo1VaSbbNbcWdZeOn (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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.