Methods for conversion of carbohydrates in ionic liquids to value-added chemicals
US7939681B2 · kind B2 · utility
15Cited by
3References
10Claims
0Family size
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Key dates
| Filing date | Jul 6, 2007 |
| Grant date | May 10, 2011 |
| Priority date | — |
| Expiry date | Oct 11, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D307/46
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Methods are described for converting carbohydrates including, e.g., monosaccharides, disaccharides, and polysaccharides in ionic liquids to value-added chemicals including furans, useful as chemical intermediates and/or feedstocks. Fructose is converted to 5-hydroxylmethylfurfural (HMF) in the presence of metal halide and acid catalysts. Glucose is effectively converted to HMF in the presence of chromium chloride catalysts. Yields of up to about 70% are achieved with low levels of impurities such as levulinic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.