Oxidation of alkanes to unsaturated aldehydes and carboxylic acids using a catalyst containing Mo, V, Te and Nb
US6180825A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 1999 |
| Grant date | Jan 30, 2001 |
| Priority date | — |
| Expiry date | May 21, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2523/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for preparing a catalyst comprises: admixing metal compounds, at least one of which is an oxygen containing compound, and at least one solvent to form a solution; removing the solvent from the solution to obtain a catalyst precursor; and calcining the catalyst precursor under an inert atmosphere to form a catalyst having the formula EQU A.sub.a M.sub.m N.sub.n X.sub.x O.sub.o wherein a, m, n, x and o are the molar proportions of A, M, N, X and O, respectively, and o is dependent on the oxidation state of the elements A, M, N and X, wherein A is Mo, W, Fe, Nb, Ta, Zr, Ru or mixtures thereof, M is V, Ce, Cr or mixtures thereof, N is Te, Bi, Sb, Se or mixtures thereof, and X is Nb, Ta, W, Ti, Al, Zr, Cr, Mn, Fe, Ru, Co, Rh, Ni, Pd, Pt, Sb, Bi, B, In, Ce or mixtures thereof. The catalyst is useful for the gas phase oxidation of alkanes to unsaturated aldehydes or carboxylic acids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.