文献类型：期刊文献

英文题名：High yield production of HMF from carbohydrates over silica-alumina composite catalysts

作者：Li, Xiangcheng[1];Xia, Qineng[1];Van Chuc Nguyen[2];Peng, Kaihao[1];Liu, Xiaohui[1];Essayem, Nadine[2];Wang, Yanqin[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Res Inst Ind Catalysis, Shanghai Key Lab Funct Mat Chem, Shanghai 200237, Peoples R China;[2]Inst Res Catalysis & Environm Lyon, IRCELYON, UMR5256, 2 Ave Albert Einstein, F-69626 Vileurbanne, France

年份：2016

卷号：6

期号：20

起止页码：7586

外文期刊名：CATALYSIS SCIENCE & TECHNOLOGY

收录：;EI(收录号：20164202915469);WOS:【SCI-EXPANDED(收录号:WOS:000386210100023)】；

基金：The research was sponsored financially by the National Natural Science Foundation of China (No. 91545103, 21273071 and 21403065) and the Science and Technology Commission of Shanghai Municipality (13JC1401902 and 10dz2220500). The authors thank also the Rhone-Alpes area for their financial support.

语种：英文

外文关键词：Alumina - Aluminum oxide - Catalyst activity - Silica - Sol-gels - Sol-gel process

摘要：An efficient and selective production of 5-hydroxymethylfurfural (HMF) from carbohydrates is achieved in the presence of mesoporous AlSiO catalysts in a THF/H2O-NaCl biphasic system. These mesoporous AlSiO catalysts are prepared by a facile sol-gel method and have tunable acidity. Their acidic sites are characterized and quantified by NH3-TPD, microcalorimetry of NH3 adsorption and Py-FTIR, then correlated with the catalytic isomerization and dehydration of glucose to HMF. The detailed studies show that the AlSiO-20 catalyst with a Si/Al ratio of 18 is favorable for HMF production due to its inherently high surface area, high amounts of acid sites and a suitable Bronsted/Lewis acid ratio. Over the AlSiO-20 catalyst, an HMF yield of 63.1% is obtained at 160 degrees C for 1.5 h in the biphasic THF/H2O-NaCl medium with 10 wt% glucose in water. Further conducting the amplification experiment 30 times, the HMF yield still reaches 60.2% and the yield has no obvious decline after four catalytic cycles; this is the best result for an amplification experiment of HMF from glucose over a heterogeneous catalyst so far. After separation, HMF can be used for the production of 2,5-furandicarboxylic acid (FDCA) and as high as 95% FDCA yield is obtained over the Pt/C catalyst. Furthermore, the AlSiO catalyst demonstrates excellent activity in the conversion of disaccharides, polysaccharides and even lignocellulosic biomass, indicating it would be a promising catalyst for the conversion of glucose and glucose-based carbohydrates to HMF in industry applications.