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利用纤维素制备五羟甲基糠醛是近年来研究的热点,对纤维素降解作反应动力学研究能更深入地了解整个降解过程中的各步反应从而找出最优化工艺。本文主要介绍了纤维素降解制备五羟甲基糠醛的反应机理,其中葡萄糖的降解是一个慢反应,提高葡萄糖的降解速率能快速提高整个过程的反应速率。分别讨论了原料、反应温度、反应时间、不同反应体系及催化剂五个因素对五羟甲基糠醛生成速率及产率的影响,着重分析了微波体系、超临界体系、亚临界体系及离子液体体系对产率的影响。
In recent years, five-hydroxymethylfurfural has been the focus of research. The reaction kinetics of cellulose degradation can better understand the reactions in the entire degradation process and find the optimal process. This paper mainly introduces the reaction mechanism of cellulose degradation to the production of 5-hydroxymethylfurfural, in which the degradation of glucose is a slow reaction. Increasing the glucose degradation rate can rapidly increase the reaction rate of the whole process. The effects of five factors, including feedstock, reaction temperature, reaction time, different reaction systems and catalysts, on the formation rate and yield of pentafluoromethylfurfural were discussed respectively. The microwave system, supercritical system, subcritical system and ionic liquid system Effect on yield.