Method for preparing maleic anhydride
US4111963A · kind A · utility
19Cited by
5References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 12, 1975 |
| Grant date | Sep 5, 1978 |
| Priority date | — |
| Expiry date | Dec 12, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/215
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The productivity of phosphorus-vanadium-oxygen catalysts useful for converting saturated hydrocarbons containing from 4 to 10 carbon atoms to maleic anhydride can be increased by the order of preparatory steps used to prepare such catalysts. Phosphorus-vanadium-oxygen catalysts are prepared by mixing phosphorus and vanadium compounds to form precursors, shaping precursors and then calcining the precursors to form the catalysts. The catalysts are particularly beneficial for the conversion of butane to maleic anhydride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.