title: Hydro-liquefaction of microcrystalline cellulose, xylan and industrial lignin in different supercritical solvents.
abstract: The influences of solvent on hydro-liquefaction of cellulose, xylan, and lignin were investigated using micro-autoclave. The maximum conversion and bio-oil yield obtained from cellulose and xylan liquefaction were achieved in methanol, whereas similar liquefaction characteristics of lignin were observed in methanol and ethanol. The molecular simulation of interactions between solvents and subcomponents indicated that methanol and ethanol were highly miscible with raw materials. GC-MS and FT-ICR MS characterization revealed that the chemical compositions of liquid products highly depended on the utilized feedstocks. Esters, ketones, and aldehydes were mainly produced from cellulose and xylan conversion, whereas aromatic compounds were primarily derived from lignin conversion. EA results showed that methanol favored the hydrogenation and deoxygenation, resulting in the heating value increased. It could be concluded that the oil quality was highly improved in supercritical methanol.
authors: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266555, China; College of Science, China University of Petroleum, Qingdao 266580, China.
authors: Qingyin
authors: Q
authors: Li
authors: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266555, China. Electronic address: liudong@upc.edu.cn.
authors: Dong
authors: D
authors: Liu
authors: China Petroleum Engineering Co., Ltd., Beijing Company, China.
authors: Xulian
authors: X
authors: Hou
authors: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266555, China.
authors: Pingping
authors: P
authors: Wu
authors: College of Science, China University of Petroleum, Qingdao 266580, China.
authors: Linhua
authors: L
authors: Song
authors: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266555, China.
authors: Zifeng
authors: Z
authors: Yan
mesh_terms: D002482:Cellulose / Q000032:analysis / Q000737:chemistry*; D000431:Ethanol / Q000737:chemistry; D008401:Gas Chromatography-Mass Spectrometry; D008031:Lignin / Q000032:analysis / Q000737:chemistry*; D000432:Methanol / Q000737:chemistry; D012997:Solvents / Q000737:chemistry*; D014990:Xylans / Q000032:analysis / Q000737:chemistry*
chemical_list: D012997:Solvents; D014990:Xylans; D000431:Ethanol; D002482:Cellulose; D008031:Lignin; C109691:microcrystalline cellulose; D000432:Methanol
keywords: Bio-oil; FT-ICR MS; Hydro-liquefaction; Molecular simulation; Subcomponent