Phosphorus addition process for improvement of catalysts suitable for maleic anhydride production
US7629286B2 · kind B2 · utility
1Cited by
16References
34Claims
0Family size
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Key dates
| Filing date | May 1, 2006 |
| Grant date | Dec 8, 2009 |
| Priority date | — |
| Expiry date | Dec 9, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2523/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process is disclosed for the improvement of fluid bed vanadium phosphorus mixed oxide catalyst performance in the manufacture of maleic anhydride from butane, which process comprises impregnating the VPO catalyst powder with a phosphorus compound, such as an alkyl ester of orthophosphoric acid and then using this impregnated catalyst powder to provide phosphorus to the maleic anhydride producing catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.