title: Liquefaction of sawdust in 1-octanol using acidic ionic liquids as catalyst.
abstract: Acidic ionic liquids (AILs) as a novel catalyst in biomass liquefaction can accord with the demand of green chemistry and enhance the development of biomass thermal chemical conversion. A series of AILs containing HSO4- were synthesized by the imidazolium cation functionalization and applied to the Chinese fir sawdust liquefaction in 1-octanol in this paper. The experimental results showed that the liquefaction rate was gradually improved with the AILs acidity increasing, and reached 71.5% when 1-(4-sulfobutyl)-3-methylmidazolium hydrosulfate was used as catalyst with the 6:1 mass ratio of 1-octanol to sawdust at 423K after 60 min. Lignin, hemicellulose and cellulose were orderly desquamated, and then depolymerized and liquefied with the catalyst acidity increasing in the sawdust liquefaction process. The light oil was mainly composed of the octyl ether and the octyl ester compounds, suggesting that the solvent may play an important role in producing the high octane rating biofuel.
authors.affiliation: College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, PR China. luzexiang@gmail.com
authors.forename: Zexiang
authors.initials: Z
authors.lastname: Lu
authors.forename: Huaiyu
authors.initials: H
authors.lastname: Zheng
authors.forename: Liwei
authors.initials: L
authors.lastname: Fan
authors.forename: Yiqiang
authors.initials: Y
authors.lastname: Liao
authors.forename: Bingjing
authors.initials: B
authors.lastname: Ding
authors.forename: Biao
authors.initials: B
authors.lastname: Huang
mesh_terms: D020003:1-Octanol / Q000737:chemistry*; D000143:Acids / Q000737:chemistry*; D002384:Catalysis; D008401:Gas Chromatography-Mass Spectrometry; D052578:Ionic Liquids; D017550:Spectroscopy, Fourier Transform Infrared; D013818:Thermogravimetry; D014934:Wood
chemical_list: D000143:Acids; D052578:Ionic Liquids; D020003:1-Octanol
keywords: Acidic ionic liquid; Catalyst; Liquefaction; Sawdust