Catalytic conversion of lactic acid to acrylic acid
US9926256B2 · kind B2 · utility
1Cited by
6References
6Claims
0Family size
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Key dates
| Filing date | Mar 15, 2013 |
| Grant date | Mar 27, 2018 |
| Priority date | — |
| Expiry date | Mar 15, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2013/530496
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed herein is a mixed phosphate catalyst for converting lactic acid to acrylic acid, which is characterized by a high conversion of lactic acid, a high selectivity for acrylic acid, a high yield of acrylic acid, and correspondingly low selectivity and molar yields for undesired by-products. This is achieved with a particular class of catalysts defined by a mixture of metal-containing phosphate salts. Further, the catalyst is believed to be stable and active for lengthy periods heretofore unseen in the art for such dehydration processes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.