Journal of the Japan Institute of Energy
Online ISSN : 1882-6121
Print ISSN : 0916-8753
ISSN-L : 0916-8753
Original Paper
Liquefaction of Lignocellulosic Biomass in Protonic Solvents
Hisakazu SHIRAIHirokazu ARIGAEika Weihua QIAN
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2014 Volume 93 Issue 6 Pages 548-554


The liquefactions of cellulose, rice straw, and red pine were conducted in a batch reaction system in the presence of solid catalysts and several protonic solvents, such as methanol and ethylene glycol. In the solvolysis of cellulose in methanol, methyl-glucopyranosides were the main products formed via the addition of H+ and OCH3 in the presence of a solid catalyst. The decomposition rates of cellulose in various solvents decreased in the order of water › methanol › ethylene glycol › 1-butanol. This may suggest that the solvents with large self-dissociation constant (KSH) enhance the solvolysis of cellulose. In addition, the pore structure and acidity of a solid acid catalyst and type of lignocellulosic biomass also affected the solvolysis. The maximum liquefaction rates of rice straw and red pine in ethylene glycol using a sulfated zirconia catalyst at 453 K for 6 h were ca. 78.7% and 97.5%, respectively.

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© 2014 The Japan Institute of Energy
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