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Liquefaction behavior of Western red cedar and Japanese beech in the ionic liquid 1-ethyl-3-methylimidazolium chloride
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Atsushi Nakamura
Published/Copyright:
February 23, 2010
Abstract
Western red cedar and Japanese beech are studied concerning their liquefaction behavior with an ionic liquid, 1-ethyl-3-methylimidazolium chloride ([C2mim][Cl]). Significant differences in liquefaction behavior were observed in terms of solubility and the lignin content of the insoluble residues. Thioacidolysis analysis of the residues confirmed that β-O-4 bonds in lignin were cleaved preferentially by the treatment with [C2mim][Cl]. The differences in liquefaction behavior can be explained by structural differences between softwood and hardwood lignins. Furthermore, gel permeation chromatography and GC-MS analyses revealed that cellulose and hemicelluloses were decomposed partly to monomeric sugars such as glucose, mannose, galactose, xylose, and arabinose.
Keywords: depolymerization; ionic liquid; Japanese beech; lignin; liquefaction; reaction behavior; Western red cedar; 1-ethyl-3-methylimidazolium chloride
Received: 2009-5-8
Accepted: 2009-12-16
Published Online: 2010-02-23
Published Online: 2010-02-23
Published in Print: 2010-04-01
©2010 by Walter de Gruyter Berlin New York
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Articles in the same Issue
- Original Papers
- Interaction of dissolved and colloidal material during the mixing of different pulps
- Liquefaction behavior of Western red cedar and Japanese beech in the ionic liquid 1-ethyl-3-methylimidazolium chloride
- Ageing of modified wood. Part 1: Wetting properties of acetylated, furfurylated, and thermally modified wood
- Ageing of modified wood. Part 2: Determination of surface composition of acetylated, furfurylated, and thermally modified wood by XPS and ToF-SIMS
- Water sorption in wood and modified wood at high values of relative humidity. Part I: Results for untreated, acetylated, and furfurylated Norway spruce
- Water sorption in wood and modified wood at high values of relative humidity. Part 2: Appendix. Theoretical assessment of the amount of capillary water in wood microvoids
- Electron spectroscopy on plasma treated lignin and cellulose
- Tensile shear strength of UF- and MUF-bonded veneer related to data of adhesives and cell walls measured by nanoindentation
- Characterizing macro-voids of uncompressed mats and finished particleboard panels using response surface methodology and X-ray CT
- Mixed mode fracture testing of adhesively bonded wood specimens using a dual actuator load frame
- Application of non-symmetrical drying tests for assessment of drying behaviour of ntholo (Pseudolachnostylis maprounaefolia PAX)
- Automated measurement of vessel properties in birch and poplar wood
- Degradation of wood veneers by Fenton's reagents: Effects of wood constituents and low molecular weight phenolic compounds on hydrogen peroxide decomposition and wood tensile strength loss
- Growth of ZnO nanofilms on wood with improved photostability
- Termite-resistant heartwood. Effect of antioxidants on termite feeding deterrence and mortality
- Biological performance of copper azole-treated wood and wood-based composites
- Short Notes
- Kraft pulping of wood treated with carbon-based preservatives
- Decay resistance of wood treated with fluorinated waterproofing agents
- Meetings
- Meetings
Keywords for this article
depolymerization;
ionic liquid;
Japanese beech;
lignin;
liquefaction;
reaction behavior;
Western red cedar;
1-ethyl-3-methylimidazolium chloride
Articles in the same Issue
- Original Papers
- Interaction of dissolved and colloidal material during the mixing of different pulps
- Liquefaction behavior of Western red cedar and Japanese beech in the ionic liquid 1-ethyl-3-methylimidazolium chloride
- Ageing of modified wood. Part 1: Wetting properties of acetylated, furfurylated, and thermally modified wood
- Ageing of modified wood. Part 2: Determination of surface composition of acetylated, furfurylated, and thermally modified wood by XPS and ToF-SIMS
- Water sorption in wood and modified wood at high values of relative humidity. Part I: Results for untreated, acetylated, and furfurylated Norway spruce
- Water sorption in wood and modified wood at high values of relative humidity. Part 2: Appendix. Theoretical assessment of the amount of capillary water in wood microvoids
- Electron spectroscopy on plasma treated lignin and cellulose
- Tensile shear strength of UF- and MUF-bonded veneer related to data of adhesives and cell walls measured by nanoindentation
- Characterizing macro-voids of uncompressed mats and finished particleboard panels using response surface methodology and X-ray CT
- Mixed mode fracture testing of adhesively bonded wood specimens using a dual actuator load frame
- Application of non-symmetrical drying tests for assessment of drying behaviour of ntholo (Pseudolachnostylis maprounaefolia PAX)
- Automated measurement of vessel properties in birch and poplar wood
- Degradation of wood veneers by Fenton's reagents: Effects of wood constituents and low molecular weight phenolic compounds on hydrogen peroxide decomposition and wood tensile strength loss
- Growth of ZnO nanofilms on wood with improved photostability
- Termite-resistant heartwood. Effect of antioxidants on termite feeding deterrence and mortality
- Biological performance of copper azole-treated wood and wood-based composites
- Short Notes
- Kraft pulping of wood treated with carbon-based preservatives
- Decay resistance of wood treated with fluorinated waterproofing agents
- Meetings
- Meetings
