TY - JOUR ID - 5833 TI - Conversion of Sawdust into 5-Hydroxymethylfurfura by Using 1,3-Dimethyl-2-Imidazolidinone as the Solvent JO - Iranian Journal of Chemistry and Chemical Engineering JA - IJCCE LA - en SN - 1021-9986 AU - Li, Ya-feng AU - Yuan, Yong-peng AU - Wang, Kai-Kai AU - Jia, Jun AU - Qin, Xiao-Lin AU - Xu, Yue AD - School of Chemical Engineering, Changchun University of Technology, Changchun 130012, P.R. CHINA Y1 - 2013 PY - 2013 VL - 32 IS - 3 SP - 75 EP - 79 KW - 5-HMF KW - Sawdust KW - DMI KW - Alkali halide KW - Chromium catalyst DO - 10.30492/ijcce.2013.5833 N2 - The conversion of the cellulose into 5-HMF would experience three steps, cellulose to glycose, glycose to fructose and fructose to 5-HMF. Chloride ion can break down the hydrogen bond in cellucose, chromium can catalyze the isomerization of glycose to fructose, and the high temperature is helpful to cyclohydration of fructose to 5-HMF. In this paper, the sawdust has been directly degraded into 5-HMF in 1,3-dimethyl-2-imidazolidinone (DMI) solvent containing alkali halides or ionic liquid with chromium(III) as the catalyst. The factors including the reaction temperature, reaction time, amount of catalyst and liquid-solid ratio, are investigated. The results indicate that the additive —— alkali halides plays an important role in the degradation of sawdust, for example that NaCl and KCl give rise to 28% (140°C) and 25.5% (120°C) of the final yield calculated on m(5-HMF)/m(sawdust), respectively.   UR - https://ijcce.ac.ir/article_5833.html L1 - https://ijcce.ac.ir/article_5833_d26de9fd9a7bedafa256535d45785091.pdf ER -