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Indexed by:期刊论文

Date of Publication:2010-09-24

Journal:CHEMSUSCHEM

Included Journals:SCIE、EI、PubMed、Scopus

Volume:3

Issue:9

Page Number:1078-1084

ISSN No.:1864-5631

Key Words:biomass; ethers; hydrolysis; ionic liquids; renewable resources

Abstract:The hydrolysis of beta-O-4 bonds in two lignin model compounds was studied in an acidic ionic liquid, 1-H-3-methylimidazolium chloride. The beta-O-4 bonds of both guaiacylglycerol-beta-guaiacyl ether and veratrylglycerol-beta-guaiacyl ether underwent catalytic hydrolysis to produce guaiacol as the primary product with more than 70% yield at 150 degrees C. Up to 32 wt% substrate concentration could be treated in the system without a decrease in guaiacol production. The ionic liquid could be reused without loss of activity in guaiacol production from both guaiacylglycerol-beta-guaiacyl ether and veratrylglycerol-beta-guaiacyl ether. A possible mechanism accounting for the guaiacol production is presented.