Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2010-09-24

Journal: CHEMSUSCHEM

Included Journals: Scopus、PubMed、EI、SCIE

Volume: 3

Issue: 9

Page Number: 1078-1084

ISSN: 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.