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首页> 外文期刊>Catalysis science & technology >Importance of the synergistic effects between cobalt sulfate and tetrahydrofuran for selective production of 5-hydroxymethylfurfural from carbohydrates
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Importance of the synergistic effects between cobalt sulfate and tetrahydrofuran for selective production of 5-hydroxymethylfurfural from carbohydrates

机译：之间的协同作用的重要性硫酸钴和四氢呋喃的选择性生产的5-hydroxymethylfurfural碳水化合物

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摘要

In this study, an effective catalytic system (CoSO4 center dot 7H(2)O/THF) for selective conversion of fructose to 5-hydroxymethylfurfural (HMF; yield: 88%) was developed. The synergistic effects among Co2+, SO42-, crystal water and tetrahydrofuran (THF) were crucial for achieving selective dehydration of fructose to HMF. Co2+ worked as a Lewis acid for catalyzing mainly dehydration of fructose to HMF but not the further decomposition of HMF to levulinic acid. THF could help to retain HMF while CoSO4 could coordinate with HMF, enhancing the thermal stability of HMF in THF. The crystal water in cobalt sulfate could help to coordinate with fructose, which facilitated the conversion of fructose via dehydration reactions. The CoSO4 center dot 7H(2)O/THF catalytic system could also catalyze the conversion of inulin and cellulose into HMF. The main advantages of the CoSO4 center dot 7H(2)O/THF catalytic system are the low cost, the easy recycling of the CoSO4 center dot 7H(2)O catalyst and the easy separation of HMF from volatile THF.
机译：在这项研究中,一个有效的催化体系(CoSO4中心点7 h (2) O /四氢呋喃)选择性转换5-hydroxymethylfurfural果糖(羟甲基糠醛;影响二氧化碳+,SO42 -、水晶和水四氢呋喃(四氢呋喃)实现的关键选择性的果糖脱水羟甲基糠醛。主要工作为路易斯酸催化羟甲基糠醛但不是脱水的果糖羟甲基糠醛的进一步分解乙酰丙酸。四氢呋喃在CoSO4可以有助于保留羟甲基糠醛协调与羟甲基糠醛,提高热羟甲基糠醛在四氢呋喃的稳定。硫酸钴可以帮助协调果糖,它促进了转换的果糖经脱水反应。中心点7 h (2) O /四氢呋喃催化系统也可以催化转化的菊粉和纤维素羟甲基糠醛。点7 h (2) O /四氢呋喃催化系统的低成本、CoSO4中心的简单的回收点7 h (2) O催化剂和羟甲基糠醛的容易分离不稳定的四氢呋喃。

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