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One-pot synthesis of 5-hydroxymethylfurfural directly from starch over SO(4)(2-)/ZrO2-Al2O3 solid catalyst
Yu Yang1, Xi Xiang, Dongmei Tong
1Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, PR China.
Abstract:
The synthesis of 5-hydroxymethylfurfural (HMF) directly from starch was studied in dimethyl sulfoxide-water. The effects of catalyst variation, reaction time, water content, catalyst loading and temperature on the reaction were investigated. The SO(4)(2-)/ZrO(2)-Al(2)O(3) catalyst was found to act as a bifunctional catalyst with high activity for both hydrolysis and dehydration of starch. HMF yield of 55% was obtained after 6h at 423K for the reaction of starch (the molar ratio of water to glucose in starch is 44/1) over the SO(4)(2-)/ZrO(2)-Al(2)O(3) catalyst, which bears high acidity and moderate basicity with Zr/Al molar ratio of 1:1.
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