Production of unsaturated carboxylic acids or acid esters with a haloapatite-based catalyst
US10369551B2 · kind B2 · utility
1Cited by
4References
10Claims
0Family size
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Key dates
| Filing date | Dec 8, 2015 |
| Grant date | Aug 6, 2019 |
| Priority date | — |
| Expiry date | Dec 9, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J27/138
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to the use of haloapatites as catalysts of the dehydration reaction of α-hydroxylated carboxylic acids or acid esters, in particular of lactic acid or of methyl lactate, and also to a process for producing unsaturated carboxylic acids or acid esters, in particular acrylic acid or methyl acrylate, in the gas phase in a stainless steel reactor, in the presence of such a catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.