ZnCl<sub>2</sub>溶液中微波辅助SnCl<sub>4</sub>催化纤维素制备5-HMF

ZnCl₂溶液中微波辅助SnCl₄催化纤维素制备5-HMF

摘要: 将纤维素溶解在ZnCl₂溶液中，以SnCl₄为催化剂，微波下使纤维素降解成5-羟甲基糠醛（5-HMF）。实验考察了微波功率、纤维素的质量、ZnCl₂溶液浓度、反应时间及催化剂与纤维素物质的量比等对5-HMF产率的影响。结果表明，以SnCl₄为催化剂，在优化条件：1.0 g纤维素溶解在100 mL 70% ZnCl₂溶液中，微波功率为420 W，降解反应9 min，SnCl₄与纤维素物质的量比2：1下，5-HMF的产率达到39.4%。

Abstract: Conversion of cellulose into 5-hydroxymethylfurfural (5-HMF) catalyzed by SnCl₄ in ZnCl₂ solution with microwave was studied. The effects of microwave power, cellulose content, concentration of ZnCl₂, reaction time and the molar ratio of SnCl₄ to cellulose on the yields of 5-HMF were investigated. The results showed that under the optimum reaction condition of 1.0 g cellulose dissolved in 100 mL 70% ZnCl₂ solution, the molar ratio of SnCl₄ to cellulose of 2:1, the microwave power of 420 W, and the reaction time of 9 min, the yield of 5-HMF reaches 39.4%.