Method of preparing alcohol esters from triglycerides and alcohols using heterogeneous catalysts combining at least a ZnxAl2O3+x type solid solution and ZnO
US8383846B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Dec 23, 2009 |
| Grant date | Feb 26, 2013 |
| Priority date | — |
| Expiry date | Mar 13, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E50/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of preparing a composition of alcohol esters of linear monocarboxylic acids with 6 to 26 carbon atoms from a vegetable or animal oil, neutral or acid, virgin or recycled, with monoalcohols having 1 to 18 carbon atoms, in the presence of a catalyst combining at least a solid solution of ZnxAl2O(3+x) type, wherein x ranges between 0 and 1 (end points excluded), and free ZnO present between 7 and 30 mass %, allows to directly obtain, in one or more stages, an ester that can be used as fuel and a pure glycerin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.