摘要
研究了以自制的离子液体[Bmim][Cl]为溶剂,酸性离子液体[Bmim][HSO4]和CrCl3为催化剂,催化微晶纤维素脱水制备5-羟甲基糠醛的过程。分别考察了温度、时间、催化剂量、水含量对反应的影响。反应的优化条件为:常压下,[Bmim][Cl]用量为4g,微晶纤维素为0.02g,在130℃下加入1g[Bmim][HSO4]和0.4g CrCl3,不加水,反应4h,5-HMF的摩尔收率可以达到37%。结果表明,在较温和的离子液体体系中直接转化微晶纤维素制得5-HMF是可行的。
Process of microcrystalline cellulose(MC) dehydration to 5-hydroxymethyl-furaldehyde(5-HMF) using as solvent and acid ionic liquid and CrCl3 as catalysts was studied.The effect of the temperature,reaction time,catalyst content,water content were investigated respectively.When content is 4 g,MC content is 0.02 g,adding content is 1 g and CrCl3 content is 0.4 g at 130 ℃,reaction time 4 h at normal conditions the molar ratio of 5-HMF is 37%.Experimental results demonstrate that the reaction system is active for the dehydration of MC into HMF under mild conditions.
出处
《大连工业大学学报》
CAS
北大核心
2012年第4期268-271,共4页
Journal of Dalian Polytechnic University
