Method of producing maleic anhydride
US4562269A · kind A · utility
12Cited by
69References
52Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 6, 1983 |
| Grant date | Dec 31, 1985 |
| Priority date | — |
| Expiry date | May 6, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C5/48
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Large surface area oxidation catalysts suitable for converting C.sub.4 to C.sub.10 hydrocarbons to maleic anhydride are disclosed, comprising the oxides of vanadium, phosphorus and tin in combination with a crystalline silica having a surface area between 100 M.sup.2 /g to 450 M.sup.2 /g and wherein the vanadium has an average valence in the range of from 3.5 to 4.9.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.