Process for making maleic anhydride
US4639530A · kind A · utility
6Cited by
68References
34Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 27, 1985 |
| Grant date | Jan 27, 1987 |
| Priority date | — |
| Expiry date | Jun 27, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/252
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An oxidation catalyst of large surface area for converting C.sub.4 to C.sub.10 hydrocarbons to maleic anhydride comprises the oxides of vanadium, phosphorus and, optionally and preferably, tin, in combination with a microporous crystalline silica or a crystalline zeolite having a silica-to-alumina ratio of at least 6.0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.