Conversion of fructose into 5-hydroxymethylfurfural and alkyl levulinates catalyzed by sulfonic acid-functionalized carbon materials
Conversion of fructose into 5-hydroxymethylfurfural and alkyl levulinates catalyzed by sulfonic acid-functionalized carbon materials
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DOI：
10.1039/c3gc41139g
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发表时间：
2013-01-01
期刊：
影响因子：
9.8
通讯作者：
Li, Xinjun
中科院分区：
文献类型：
--
作者：
Liu, Ruliang;Chen, Jinzhu;Li, Xinjun
一系列磺酸功能化碳材料（C-SO 3 H），包括聚对苯乙烯磺酸接枝碳纳米管（CNT-PSSA），聚对苯乙烯磺酸接枝碳纳米纤维（CNF-PSSA），苯磺酸接枝的CMK-5（CMK-5-BSA）和苯磺酸接枝的碳纳米管（CNT-BSA），研究了果糖脱水生成5-羟甲基糠醛（HMF）和果糖醇解生成乙酰丙酸烷基酯的反应。对催化剂用量、反应时间、反应温度等反应条件进行了优化研究。在最佳反应条件下，HMF和乙酰丙酸乙酯的产率分别可达89%和86%。C-SO_3 H对果糖转化为HMF和乙酰丙酸乙酯的催化活性按其酸强度大小排序。在果糖脱水生成HMF的反应中，C-SO 3 H的催化活性与酸密度呈线性关系。C-SO 3 H具有易分离、易回收、热稳定性高等特点，是一种高效、环保的生物质碳水化合物转化为精细化学品的催化材料。
A series of sulfonic acid-functionalized carbon materials (C-SO3H), including poly(p-styrenesulfonic acid)-grafted carbon nanotubes (CNT-PSSA), poly(p-styrenesulfonic acid)-grafted carbon nanofibers (CNF-PSSA), benzenesulfonic acid-grafted CMK-5 (CMK-5-BSA), and benzenesulfonic acid-grafted carbon nanotubes (CNT-BSA), have been studied for fructose dehydration to 5-hydroxymethylfurfural (HMF) and fructose alcoholysis to alkyl levulinate. A study for optimizing the reaction conditions such as the catalyst loading, the reaction time, and the temperature has been performed. Under the optimal conditions, high HMF and ethyl levulinate yields of up to 89% and 86%, respectively, are obtained. The catalytic activities of C-SO3H for the conversions of fructose into both HMF and ethyl levulinate follow the order of their acid strength. The relationship between the catalytic activity and acid density of C-SO3H shows a linear correspondence in the fructose dehydration to HMF. The facile separation, ease of recovery, and high thermal stability make the developed C-SO3H efficient and environment-friendly catalytic materials for transforming biomass carbohydrate into fine chemicals.