Methods for making unsaturated acids using catalysts for methacrolein oxidation
US7999133B2 · kind B2 · utility
7Cited by
226References
40Claims
0Family size
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Key dates
| Filing date | May 31, 2010 |
| Grant date | Aug 16, 2011 |
| Priority date | — |
| Expiry date | May 31, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2523/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Methods for making unsaturated acids using catalysts for oxidation of unsaturated and/or saturated aldehyde to unsaturated acids is disclosed where the catalyst including at least molybdenum (Mo) and phosphorus (P), where the catalyst has a pore size distribution including at least 50% medium pores and if bismuth is present, a nitric acid to molybdenum mole ratio of at least 0.5:1 or at least 6.0:1 moles of HNO3 per mole of Mo12.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.