Process for producing an unsaturated carboxylic acid from an alkane
US8193387B2 · kind B2 · utility
1Cited by
8References
26Claims
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Key dates
| Filing date | Apr 16, 2009 |
| Grant date | Jun 5, 2012 |
| Priority date | — |
| Expiry date | Mar 9, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A one-step vapor phase oxidation process produces an unsaturated carboxylic acid, such as acrylic acid or methacrylic acid, from an alkane, such as propane or isobutane, with a mixed metal oxide catalyst and an excess of alkane relative to oxygen. The unreacted alkane and the byproduct alkene are recycled to the reaction zone without separation. Overall yield and productivity of the unsaturated carboxylic improves for such a process. An analogous method for the preparation of unsaturated nitrites is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.