LIQUEFACTION OF EUCALYPTUS SAWDUST IN ETHYLENE GLYCOL CATALYZED BY C4H8SO3HMIMHSO4
Eucalyptus sawdust was liquefiedin ethylene glycolcatalyzed bythe1-(4-sulfobutyl)-3-methylimidazolium hydrosulfate under atmospheric pressure.The impactof the reaction time,thetemperatureand dosage of catalyst,on the liquefaction behavior of eucalyptus sawdusthasbeen studied in this paper.The liquefied product was separated into three fractions:water-soluble fraction,water-insoluble fractionand residue.The results showedthat liquefactionyield of sawdustincreased with reaction time and reaction temperatureincreased.Eucalyptus liquefaction with a yield upto 96.41%was achieved when 10mmol of catalyst was used with application of 10g sawdust and 60g ethylene glycol at the temperatureof 160℃ for 150min.Hemi-cellulose and lignin were liquefied rapidlyduring the liquefaction process.Cellulose was proven to be main content of residueafter liquefaction.TheFourier transform-infrared(FT-IR),thermal gravimetric and X-ray diffraction analysis of theresidue showed that the residue mainly containedcellulose with high crystallinity.The FT-IR analysis of water-insoluble fraction showed water-insoluble fraction mainly included degradation products from lignin.The gas chromatography and mass spectrometry(GC–MS)analysis showed the water-soluble fraction mainly originated from cellulose and hemicellulose.
Honglou Wu Fangeng Chen
State Kay Laboratory of Pulp and Paper Engineering,South China University of Technology Guangzhou,510640,China
国际会议
第五届制浆造纸新技术国际研讨会(ISETPP)暨第三届国际造纸与环境学术大会(IPEC)
广州
英文
1-5
2016-11-07（万方平台首次上网日期，不代表论文的发表时间）