Catalytic conversion of cellulose into 5-hydroxymethylfurfural by extremely low mixed acids in ionic liquid

Abstract

Abstract: An efficient process for preparation of 5-hydroxymethylfurfural (5-HMF) from cellulose was carried out using ionic liquid 1-methyl-3-methyl-imidazole dimethyl phosphate ([DMIM][DMP]) as reaction medium, extremely low 0.1% mixed acids (0.1%,maleic acid and HCl) as catalyst.Yield of 5-HMF was 29.13% and conversion efficiency was 6.48mg/min. The reaction condition of microwave was 720W for 9min at 240℃.The ratio of solid to liquid was 1:50(mass ratio) and acid concentration was 0.1%.

Key words: 5-hydroxymethylfurfural, ionic liquids, cellulose, catalysis, mixing acids

摘要： 以绿色溶剂离子液体1-甲基-3-甲基咪唑磷酸二甲基盐(1-methyl-3-methyl-imidazole dimethyl phosphate,[DMIM][DMP])作为反应介质,研究超低浓度的混合酸——马来酸与盐酸(0.1%,质量分数)催化纤维素转化制备5-HMF。微波功率720W,反应时间9min,温度240℃,酸浓度0.1%,固液比1:50(质量比)为最佳反应条件,此条件下5-羟甲基糠醛的产率最高可达29.13%,转化效率为6.48mg/min。

关键词: 5-羟甲基糠醛, 离子液体, 纤维素, 催化, 混合酸

LI Tiancheng, LI Qiang, JI Gengsheng, ZHAO Xiang, ZHANG Dazhao, MIN Wenli, TU Jie. Catalytic conversion of cellulose into 5-hydroxymethylfurfural by extremely low mixed acids in ionic liquid[J]. Chemical Industry and Engineering Progree, 2015, 34(s1): 121-126.

李天程, 李强, 季更生, 赵翔, 张大钊, 闵文丽, 屠洁. 离子液体中超低浓度混合酸催化纤维素制5-羟甲基糠醛[J]. 化工进展, 2015, 34(s1): 121-126.

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