化工学报2016，Vol.67Issue(7)：2799-2807,9.DOI:10.11949/j.issn.0438-1157.20160115
L 酸/B 酸可调的磺酸功能化 MIL-101（Cr）材料催化葡萄糖脱水制备5-羟甲基糠醛
Sulfonic acid functionalized MIL-101(Cr) catalysts with tunable Lewis acid and Brönsted acid sites for glucose dehydration to 5-HMF
摘要
Abstract
A series of Cr-terephthalates metal-organic frameworks functionalized by sulfonic acid group (−SO3H) [MIL-101(Cr)-SO3H], featuring varied ratios of Lewis acid site to Brönsted acid site, were synthesized by hydrothermal reaction method starting from Cr(NO3)3·9H2O and sodium 2-sulfoterephthalate under various conditions of temperature and reaction time. The catalysts were characterized by techniques of PXRD, EDX, SEM, ICP-AAS and BET surface area, and the catalytic performances for glucose conversion to 5-HMF were evaluated. It showed that, in terms of the catalysis kinetics, Cr3+ serves as the Lewis acid sites of MIL-101(Cr)-SO3H for glucose isomerization, and sulfonic acid group, the Brönsted acid site for the fructose dehydration. The highest HMF selectivity of 47.15% and the highest HMF yield of 46.0% was achieved under conditions of molar ratio of Brönsted acid site to Lewis acid site of 1.1, 150℃ for 2 h.关键词
金属有机骨架材料/催化/葡萄糖/5-羟甲基糠醛/反应动力学Key words
metal-organic framework/catalysis/glucose/5-hydroxymethyl furfural/reaction kinetics分类
化学引用本文复制引用
苏叶,鲍宗必,张治国,邢华斌,杨启炜,苏宝根,杨亦文,任其龙..L 酸/B 酸可调的磺酸功能化 MIL-101（Cr）材料催化葡萄糖脱水制备5-羟甲基糠醛[J].化工学报,2016,67(7):2799-2807,9.基金项目
国家自然科学基金项目（21436010，21376205）。@@@@supported by the National Natural Science Foundation of China (21436010,21376205) （21436010,21376205）
