Issue 8, 2015

Almost complete dissolution of woody biomass with tetra-n-butylphosphonium hydroxide aqueous solution at 60 °C

Abstract

Dissolution of several kinds of woods was examined in tetra-n-butylphosphonium hydroxide ([P4,4,4,4]OH) aqueous solution. Since there is a strong correlation between the dissolution degrees and the Klason lignin contents of the wood, lignin degradation and removal were found to be necessary for efficient dissolution of several woods such as cedar. It was found that moderate heating (60 °C) and addition of H2O2 aqueous solution to 50% [P4,4,4,4]OH aqueous solution are quite effective to dissolve wood. Cedar powder (final concentration of 5.0 wt%) was almost completely dissolved in this aqueous solution at 60 °C under mild stirring for 24 h. This efficient wood dissolution was caused by partial degradation of lignin.

Graphical abstract: Almost complete dissolution of woody biomass with tetra-n-butylphosphonium hydroxide aqueous solution at 60 °C

Supplementary files

Article information

Article type
Paper
Submitted
26 Mar 2015
Accepted
01 Jul 2015
First published
02 Jul 2015

Green Chem., 2015,17, 4432-4438

Author version available

Almost complete dissolution of woody biomass with tetra-n-butylphosphonium hydroxide aqueous solution at 60 °C

M. Abe, S. Yamanaka, H. Yamada, T. Yamada and H. Ohno, Green Chem., 2015, 17, 4432 DOI: 10.1039/C5GC00646E

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