催化作用
化学
脱氢
产量(工程)
选择性
5-羟甲基糠醛
金属
无机化学
核化学
有机化学
材料科学
冶金
作者
Huai Liu,Xuejuan Cao,Junnan Wei,Wenlong Jia,Mengzhu Li,Xing Tang,Xianhai Zeng,Yong Sun,Tingzhou Lei,Shijie Liu,Lu Lin
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2019-03-15
卷期号:7 (8): 7812-7822
被引量:68
标识
DOI:10.1021/acssuschemeng.9b00010
摘要
It is challenging to effectively convert 5-hydroxymethylfurfural (HMF) to 2,5-diformylfuran (DFF), a flexible biobased building-block, over non-noble metal catalysts. In this contribution, Mn–Fe oxides were prepared and served as highly active catalysts for the selective oxidation of HMF to DFF. Among Mn–Fe oxides with varied Mn–Fe molar ratios, Mn6Fe1Ox showed the best catalytic activity and offered HMF conversion up to 97% with a DFF selectivity of 98% (110 °C, 5 h, and 1.5 MPa O2). It is revealed that the introduction of α-Fe2O3 resulted in significant enhancement in the amount of catalytic active sites (Mn4+–O2– pairs) and their activity in Mn6Fe1Ox for the dehydrogenation of HMF to DFF. Mn6Fe1Ox also was a robust catalyst that could be successively used at least six times without substantial loss in its catalytic activity. Furthermore, a facile two-step process for the conversion of fructose to DFF with a yield up to 80% was developed by the integration of dehydration and oxidation over Amberlyst-15 and Mn6Fe1Ox, respectively.
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