【摘要】 为了探索果皮废弃物转化制备高价值平台化合物的潜力，文章以柑橘果皮为原料，在氯化胆碱（ChCl）/羧酸基低共熔溶剂（DES）中进行了果皮水热转化制备糠醛（FF）和5-羟甲基糠醛（5-HMF）的实验。通过在木糖和葡萄糖中的实验结果表明：羧酸种类对DES催化效果为乳酸>乙酸>乙醇酸；ChCl与羧酸的最佳物质的量比为1∶2；体系最佳含水率为20%。基于优化后的工况研究了温度和时间对柑橘果皮转化的影响。由于柑橘果皮中的果胶成分在低共熔溶剂中主要转化为5-HMF，所以果皮转化为5-HMF的产率明显高于FF，果皮生成5-HMF的最大质量收率为8.6%（摩尔产率为43.1%），而FF最大质量收率为2.4%（摩尔产率为19.1%）。更多还原

【Abstract】 In order to explore the potential of fruit peel waste conversion to produce high-value platform chemicals, the hydrothermal conversion of citrus peel to furfural(FF) and 5-hydroxymethylfurfural(5-HMF) was conducted in the choline chloride(ChCl)/carboxylic acid based deep eutectic solvents(DES) system. Conclusions can be drawn from experiments in xylose and glucose:The carboxylic acid performance was ranked lactic acid > acetic acid > glycolic acid. The optimal molar ratio of choline chloride to carboxylic was 1∶2. The optimal water content of solvent system was 20%. The effects of temperature and time on citrus peel conversion were studied based on the optimized operating conditions. Since the pectin component in the citrus peel was mainly converted to 5-HMF in DES, the yield of the peel converted to 5-HMF was significantly higher than that of FF. The maximum mass yield of 5-HMF from citrus peel was 8.6%(molar yield was 43.1%). The maximum mass yield of furfural reached 2.4%(molar yield was 19.1%).更多还原