Highly efficient conversion of carbohydrates into 5-hydroxymethylfurfural using the bi-functional CrPO4 catalyst
Highly efficient conversion of carbohydrates into 5-hydroxymethylfurfural using the bi-functional CrPO4 catalyst
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DOI：
10.1039/c5ra23716e
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发表时间：
2016-01
期刊：
影响因子：
3.9
通讯作者：
Si-quan Xu;Xiaopei Yan;Q. Bu;Haian Xia
中科院分区：
文献类型：
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作者：
Si-quan Xu;Xiaopei Yan;Q. Bu;Haian Xia
在双相体系中，采用价格低廉的双功能CrPO4催化剂，实现了碳水化合物高效合成5-羟甲基糠醛（HMF）。考察了反应温度、反应时间、溶剂等条件对HMF产率的影响。以果糖为反应物，在140℃下反应15 min， HMF产率可达83%。当反应在140°C下进行30 min时，葡萄糖的HMF产率也达到了63%。在已报道的催化剂中，CrPO4被证明是将葡萄糖转化为HMF最有效的催化剂之一，可与离子液体反应体系相媲美。此外，CrPO4催化剂在不需要添加均相无机酸的情况下，将微晶和木质纤维素原料转化为HMF的活性很高。讨论了双功能CrPO4催化剂催化碳水化合物转化为HMF的可能机理。
The highly efficient synthesis of 5-hydroxymethylfurfural (HMF) from carbohydrates was achieved using the inexpensive and bi-functional CrPO4 catalyst in a biphasic system. The effect of various reaction conditions, including reaction temperature, time, and solvent, on HMF yields was explored. A HMF yield of up to 83% was obtained using fructose as the reactant at 140 °C for 15 min. A maximum HMF yield of 63% was also achieved from glucose when the reaction was carried out at 140 °C for 30 min. Among the reported catalysts, CrPO4 was shown to be one of the most effective in the conversion of glucose into HMF, which is comparable to an ionic liquid reaction system. Moreover, the CrPO4 catalyst exhibited high activity to convert microcrystalline and lignocellulosic feedstock to HMF without the need for the addition of homogeneous mineral acids. The possible conversion mechanism of carbohydrates into HMF catalyzed by the bi-functional CrPO4 catalyst is discussed.