柑橘果皮在氯化胆碱/羧酸基低共熔溶剂中水热转化制备平台化合物的研究  

Preparation of platform chemicals by hydrothermal conversion of citrus peel in Choline Chloride/Carboxylic acid based deep eutectic solvent

作　　者：管映沙 尹小燕 娄瑞[4] 谭卫红[3] 朱玲君[1,2] 王树荣[1,2] Guan Yingsha;Yin Xiaoyan;Lou Rui;Tan Weihong;Zhu Lingjun;Wang Shurong(State Key Laboratory of Clean Energy Utilization,Zhejiang University,Hangzhou 310027,China;School of Energy Engineering,Zhejiang University,Hangzhou 310027,China;Institute of Chemical Industry of Forestry Products,Chinese Academy of Forestry,Nanjing 210042,China;College of Physics and Energy,Shaanxi University of Science and Technology,Xi'an 710021,China)

机构地区：[1]浙江大学能源清洁利用国家重点实验室,浙江杭州310027 [2]浙江大学能源工程学院,浙江杭州310027 [3]中国林业科学研究院林产化学工业研究所,江苏南京210042 [4]陕西科技大学物理与能源学院,陕西西安710021

出　　处：《可再生能源》2024年第6期711-718,共8页Renewable Energy Resources

基　　金：国家重点研发计划项目(2018YFB1501500)。

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%)。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%).

关 键 词：低共熔溶剂 柑橘果皮 水热转化 5-羟甲基糠醛 糠醛 

分 类 号：TK6[动力工程及工程热物理—生物能]