SnO2/Fe2O3-rGO三元复合材料催化葡萄糖脱水制备5-羟甲基糠醛

采用水热晶化法制备SnO2/Fe2O3-rGO三元复合材料固体型催化剂,以葡萄糖为原料,SnO2/Fe2O3-rGO为催化剂,在BMIM]Br环境下催化葡萄糖脱水制备5-羟基甲糠醛(HMF)。考察催化剂制备条件及催化制备5-羟甲基糠醛(HMF)的工艺参数如:催化剂制备的晶化温度、不同金属原料配比、以及不同溶剂对(HMF)产率的影响等。实验结果表明,在200℃下,n(FeCl3·6H2O)∶n(SnCl2·2H2O)=1∶3,恒温4 h,制备的催化剂SnO2/Fe2O3-rGO在BMIM]Br离子液体中对葡萄糖脱水制备HMF所得葡萄糖转化率为99%,产率为56%。

Preparation of 5-Hydroxymethylfurfural by Dehydration of Glucose Catalyzed by SnO2/Fe2O3-rGO Ternary Composite

SnO2/Fe2O3-rGO ternary composite was prepared by hydrothermal crystallization so that it was used as catalyst to catalyze the dehydration of glucose for the preparation of 5-hydroxyfurfural(HMF)inBMIM]Br environment.The catalyst preparation conditions and catalytic parameters for the preparation of HMF were investigated,such as the crystallization temperature,the ratio of different metal materials and the effect of different solvents on the yield of HMF.Experimental results showed that with the molar ratio of raw materials at 200℃,n(FeCl3·6 H2O)∶n(SnCl2·2 H2O)=1∶3,constant temperature for 4 h,and SnO2/Fe2O3-rGO inBMIM]Br ionic liquid,the glucose conversion rate was 99%and the final yield was 56%.