Efficient mechano-catalytic depolymerization of crystalline cellulose by formation of branched glucan chains

Paul Dornath, Hong Je Cho, Alex Paulsen, Paul Dauenhauer, Wei Fan

Research output: Contribution to journalArticle

28 Scopus citations

Abstract

Selective hydrolysis of cellulose into glucose is a critical step for producing value-added chemicals and materials from lignocellulosic biomass. In this study, we found that co-impregnation of crystalline cellulose with sulfuric acid and glucose can greatly reduce the time needed for ball milling compared with adding acid alone. The enhanced reaction time coincides with the rapid formation of branched α(1→6) glycosidic bonds, which have been shown to increase water solubility of β(1→4) glucan oligomers. Co-impregnation of glucose was crucial for the rapid formation of the α(1→6) branches, after which a carbon-based catalyst can rapidly hydrolyze the water-soluble glucan oligomers to 91.2% glucose yield faster than conventional approaches.

Original languageEnglish (US)
Pages (from-to)769-775
Number of pages7
JournalGreen Chemistry
Volume17
Issue number2
DOIs
StatePublished - Feb 1 2015

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