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Adsorption separation processes for ionic liquid catalytic processes

United States Patent

August 7, 2012
View the Complete Patent at the US Patent & Trademark Office
Pacific Northwest National Laboratory - Visit the Technology Commercialization Program Website
Presently disclosed are methods and apparatus for separation of reaction products from reaction mixtures in an ionic liquid catalysis process, particularly in conversion of biomass, cellulose, and sugars into chemical intermediates such as 5-hydroxymethylfurfural (HMF). In one embodiment an ion exclusion adsorption mechanism is used for the separation process. The process comprises (i) mixing the ionic liquid-containing reaction mixture with de-ionized water, (ii) flowing the water solution mixture into an adsorption column, (iii) eluting the column with a water- and/or alcohol-based fluid, and (iv) collecting separated fractions at different elution times.
Liu; Wei (Richland, WA), Holladay; John E. (Kennewick, WA), Zheng; Feng (Richland, WA), Brown; Heather M. (Kennewick, WA), Cooper; Alan R. (Richland, WA)
Battelle Memorial Institute (Richland, WA)
12/ 756,916
April 8, 2010
ACKNOWLEDGMENT OF GOVERNMENT SUPPORT This invention was made with Government support under Contract DE-AC06-76RLO1830 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.