期刊
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
卷 334, 期 1-2, 页码 8-12出版社
ELSEVIER
DOI: 10.1016/j.molcata.2010.10.006
关键词
Hydrolysis of cellulose; Ionic liquids; In situ C-13 NMR; Acidic catalysis; Apparent activation energy
资金
- Ministry of Science and Technology of China [2010CB732202]
- Natural Science Foundation of China
- CAS
The hydrolysis of cellulose was catalyzed over a variety of acidic ionic liquids (ILs). It is found that the hydrolysis activity is directly associated with the acidity of catalysts, as evidenced by IR spectroscopy. C-13 NMR characterization results confirm the majority product of cellulose hydrolysis is glucose, and the resulting carbohydrates undergo further degradation, possibly also catalyzed by the acidic ILs, to 5-hydroxymethylfurfural (HMF). Moreover, in situ C-13 NMR measurements clearly exhibit that the evolution of products is dependent on the reaction process. we attempt to study the kinetics of cellulose hydrolysis over the most active catalyst of [C(4)SO(3)Hmim]HSO4 at different temperatures (80-120 degrees C) to obtain the important kinetic parameters such as apparent activation energies of consecutive reaction steps. (C) 2010 Elsevier B.V. All rights reserved.
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