文献类型：期刊文献

英文题名：Efficient conversion of cellulose into 5-hydroxymethylfurfural over niobia/carbon composites

作者：Li, Xiangcheng[1];Peng, Kaihao[1];Xia, Qineng[1];Liu, Xiaohui[1];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

年份：2018

卷号：332

起止页码：528

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20174604403019);WOS:【SCI-EXPANDED(收录号:WOS:000414913700058)】；

基金：This work was supported financially by the NSFC of China (No. 91545103 and 21403065) and the Science and Technology Commission of Shanghai Municipality (10dz2220500).

语种：英文

外文关键词：Cellulose; 5-Hydromethylfurfural; Hydrothermal stability; Niobia/carbon composites

摘要：A series of novel niobia/carbon composites were synthesized by hydrothermal method following by carbonization with niobium tartrate and glucose as precursors, and used in the conversion of glucose and cellulose to 5-hydroxymethylfurfural (HMF). These catalysts were characterized by XRD, SEM, TEM, N-2 adsorption/desorption, NH3-TPD and Py-FTIR techniques and the results showed that the Nb/C catalysts were agglomerated particles, with weak to medium acid strength and suitable Bronsted/Lewis acid sites. When used in the hydrolysis and dehydration of cellulose, as high as 53.3% yield of HMF was achieved over Nb/C-50 catalyst at 170 degrees C for 8 h, accompanied with 24.5% glucose, with the total conversion of cellulose, indicating the high carbon yield and excellent activity. Furthermore, this catalyst showed excellent recyclability and its catalytic activity still maintained after 8 cycles. (C) 2017 Elsevier B.V. All rights reserved.