Green conversion of cellulose pretreated by ionic liquids to glucose

Young Woong Suh, Soo Jin Kim, In Bum Ju, Dong Jin Suh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In recent years, a great deal of interest has been paid worldwide to the conversion of lignocellulosic biomass on the basis of its viable potential to produce alcohol fuels and other bio-based chemicals. Among three major components, cellulose, compared to lignin and hemicelluloses, is much more difficult to hydrolyze because it is a highly crystalline polymer of D-anhydroglucosepyranose units joined together in long chains by β(1,4) glycosidic linkages. Thus, depolymerization of cellulose into its glucose substituents is typically catalyzed by mineral acids or enzymes. We have carried out the hydrolysis of cellobiose as well as the hydrolysis of microcrystalline cellulose over solid acid catalysts including zeolites, Al-incorporated mesoporous materials, ion-exchange resins, sulfated zirconia, etc. As a result, solid acid catalysts were demonstrated to be sufficiently acidic to cleave a β(1,4) glycosidic bond in cellobiose whereas they showed no glucose formation due to the highly-ordered structure of cellulose. Hence, we have first regenerated cellulose by ionic liquids containing chloride anions and then hydrolyzed over solid acid catalysts, yielding glucose up to 44 mol%.

Original languageEnglish
Title of host publicationAmerican Chemical Society - 235th National Meeting, Abstracts of Scientific Papers
Publication statusPublished - 2008 Dec 1
Event235th National Meeting of the American Chemical Society, ACS 2008 - New Orleans, LA, United States
Duration: 2008 Apr 62008 Apr 10

Publication series

NameACS National Meeting Book of Abstracts
ISSN (Print)0065-7727

Other

Other235th National Meeting of the American Chemical Society, ACS 2008
CountryUnited States
CityNew Orleans, LA
Period08/04/608/04/10

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Suh, Y. W., Kim, S. J., Ju, I. B., & Suh, D. J. (2008). Green conversion of cellulose pretreated by ionic liquids to glucose. In American Chemical Society - 235th National Meeting, Abstracts of Scientific Papers (ACS National Meeting Book of Abstracts).