Influences of Benzylated Modification on Liquefaction Wood Catalyzed by Methanesulfonic Acid
Low-temperature liquefaction has been studied as one of main techniques to utilize biomass. At low reaction temperature(170 ℃ )，yield of poplar brushwood liquefaction was found to be over 95％. It was solved by polyhydric alcohol with acid catalyzer. Too high average molecular weight and viscosity confine liquefaction product wide application. Benzylated modification was performed to destroy wood structure softly, before liquefaction. Influences of benzylated modification on production of wood liquefaction catalyzed by methanesulfonic acid were studied. Liquefaction product and residues were characterized by Fourier transform infrared (FTIR), and gel permeation chromatogragraphy (GPC), It was found that poplar brushwood liquefaction yields of original and benzylated both reached maximum while dosage of mathanesulfonic acid was 20％. After benzylated modification, benzene structure of liquefaction product increased, and re-polymerization of liquefaction product while catalyzer was overdosed was relieved. It was the most important that the average molecular weight of liquefaction product reduced from 2808 to 1438. Liquefaction performed more completely. It has great significance for further utilization of wood liquefaction product.
Benzylated modification liquefaction poplar
Jian JIAO Gui-gan FANG Zhen-wu KONG Ming-xian HAO Qun-huan CAI
Institute of Chemical Industry of Forest Products, CAF, Nanjing 210042
国际会议
南京
英文
54-58
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）