Optimizing the yield of maleic anhydride catalyst
US4795818A · kind A · utility
20Cited by
10References
2Claims
0Family size
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Key dates
| Filing date | Apr 11, 1988 |
| Grant date | Jan 3, 1989 |
| Priority date | — |
| Expiry date | Apr 11, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2523/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of optimizing the yield of a vanadium-phosphorus catalyst during the oxidation of butane to maleic anhydride, which comprises establishing the temperature at which the catalyst provides the desired percentage conversion and yield of maleic anhydride with the established feed composition and then maintaining that temperature by continuously introducing an amount of a suitable phosphorus compound necessary to prevent a decline in selectivity to maleic anhydride without significantly increasing the temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.