化工学报2015，Vol.66Issue(9)：3490-3495,6.DOI:10.11949/j.issn.0438-1157.20151018
混合酸催化葡萄糖选择性转化合成乙酰丙酸甲酯
Catalytic and selective transformation of glucose to methyl levulinate with mixed acids as catalysts
摘要
Abstract
The efficient synthesis of methyl levulinate (MLE) from biomass feedstock using catalytic process is high economic, environment-friendly and sustainable in chemical industry. Herein, the catalytic performance of Lewis acid, Br(o)sted acid and mixed acid on the conversion of glucose to MLE is investigated in detail, and a satisfactory product yield is obtained. First, the different molecular sieves are combined with p-toluenesulfonic acid (PTSA) and employed as the catalysts for the direct transformation of glucose to MLE, in which the combination of Sn-β molecular sieve (being synthesized through a simple grinding method) and PTSA is the most efficient. The highest yield of MLE is about 68.3%. Furthermore, the catalyst is characterized by XRD, FT-IR and TG-DTG techniques. It is found that Sn-β can mediate the isomerization of glucose to fructose and PTSA mainly promote the alcoholysis reaction based on the experimental results and corresponding phenomena in the reaction. At last, the effects of Sn-β / PTSA ratio, reaction time and reaction temperature are studied, and the optimized conditions are obtained.关键词
葡萄糖/催化/醇解/混合酸/乙酰丙酸甲酯Key words
glucose/catalysis/alcoholysis/mixed-acid/methyl levulinate分类
化学化工引用本文复制引用
张阳阳,罗璇,庄绪丽,仝新利..混合酸催化葡萄糖选择性转化合成乙酰丙酸甲酯[J].化工学报,2015,66(9):3490-3495,6.基金项目
国家自然科学基金项目(21336008).supported by the National Natural Science Foundation of China (21366008). （21336008）
