摘要
Direct conversion of fructose-based carbohydrates to 5-ethoxymethylfurfural (EMF) catalyzed by Lewis acid in ethanol was investigated. It was found that BF3.(Et)20 was favorable for 5-hydroxymethylfurfural (HMF) etherification to EMF. BF3.(Et)20 combination with A1C13.6H20 with the molar ratio of 1 was an effective catalyst system for synthesis of EMF from fructose-based carbohydrates. 55.0%, 45.4% and 23.9% of EMF yields were obtained from fructose, inulin and sucrose under optimized conditions, respectively.
Direct conversion of fructose-based carbohydrates to 5-ethoxymethylfurfural (EMF) catalyzed by Lewis acid in ethanol was investigated. It was found that BF3.(Et)20 was favorable for 5-hydroxymethylfurfural (HMF) etherification to EMF. BF3.(Et)20 combination with A1C13.6H20 with the molar ratio of 1 was an effective catalyst system for synthesis of EMF from fructose-based carbohydrates. 55.0%, 45.4% and 23.9% of EMF yields were obtained from fructose, inulin and sucrose under optimized conditions, respectively.
基金
the National Natural Science Foundation of China(21233008 and 21203180)