Abstract: Preparation of the catalysts with suitable acidity,particle size and specific surface area is the key in the preparation of 5-hydroxymethyl furfural by catalyzing fructose.In this paper,SAPO-34 molecular sieves are synthesized by using different template agents and are then characterized by SEM,XRD,BET,NH3-TPD and TG.The catalytic effects of the catalysts prepared by different template agents are investigated in the synthesis of 5-hydroxymethylfurfural.Results show that the catalysts prepared under the conditions of using triethylamine as template agent,n(Al2O3):n(P2O5):n(SiO2):n(triethylamine):n(H2O)=2:2:1:4:140 and 72 h of crystallization time can exhibit uniform particle size,the highest acidity,the best crystallinity and the highest yield of 5-hydroxymethyl furfural.The yield of 5-hydroxymethyl furfural can reach up to 57% when dimethylsulfoxide is used as solvent,reaction temperature is at 150℃,reaction lasts for 90 min and m(fructose):m(catalyst):m(dimethylsulfoxide)=0.5:0.15:50.
高赛男, 刘中海, 秦冬玲, 杨刚. SAPO-34分子筛的合成及催化果糖制5-羟甲基糠醛的应用[J]. 现代化工, 2018, 38(7): 136-140.
GAO Sai-nan, LIU Zhong-hai, QIN Dong-ling, YANG Gang. Synthesis of SAPO-34 molecular sieve and its application in catalyzing fructose to make 5-hydroxymethyl furfural. Modern Chemical Industry, 2018, 38(7): 136-140.
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