Title:
METHODS FOR FURFURAL PRODUCTION FROM BRANCHED NON-FERMENTABLE SUGARS IN STILLAGE OR SYRUP
Document Type and Number:
WIPO Patent Application WO/2012/088208
Kind Code:
A3
Abstract:
Furfural is obtained selectively and in good purity from non-fermentable branched sugars found in soluble waste streams of lignocellulosic biomass. In a monophasic method, stillage or syrup is contacted with water and an acid catalyst under suitable reaction conditions to convert the branched non-fermentable branched sugars to furfural. Additionally, the stillage or syrup can be treated with a water-immiscible organic solvent to form a biphasic mixture comprising an aqueous phase and an organic phase. The furfural that is produced preferentially partitions into the organic phase, from which it may be recovered.
Inventors:
KASAT RAHUL B (US)
SABESAN SUBRAMANIAM (US)
SABESAN SUBRAMANIAM (US)
Application Number:
PCT/US2011/066334
Publication Date:
October 18, 2012
Filing Date:
December 20, 2011
Export Citation:
Assignee:
DU PONT (US)
KASAT RAHUL B (US)
SABESAN SUBRAMANIAM (US)
KASAT RAHUL B (US)
SABESAN SUBRAMANIAM (US)
International Classes:
C07D307/48; C07D307/50
Foreign References:
| US4533743A | 1985-08-06 | |||
| JPH02108682A | 1990-04-20 | |||
| US4366322A | 1982-12-28 |
Attorney, Agent or Firm:
LANGWORTHY, John, A. (Legal Patent Records Center4417 Lancaster Pik, Wilmington Delaware, US)
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