Selective conversion of cotton cellulose to glucose and 5-hydroxymethyl furfural with SO42/MxOy solid superacid catalyst

被引：61
|
作者：
Yang, Fang [1 ]
Li, Yang [1 ]
Zhang, Qian [1 ]
Sun, Xiaofeng [1 ]
Fan, Hongxian [1 ]
Xu, Nian [1 ]
Li, Gang [1 ]
机构：
[1] Hebei Univ Technol, Sch Chem Engn & Technol, Hebei Prov Key Lab Green Chem Technol & High Effi, Tianjin 300130, Peoples R China
来源：
CARBOHYDRATE POLYMERS | 2015年 / 131卷
基金：
中国国家自然科学基金;
关键词：
Cellulose; Glucose; HMF; Solid super acid; SO42-/SnO2; SULFATED SNO2;
D O I：
10.1016/j.carbpol.2015.05.036
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
This paper presented a mild hydrothermal process for degradation of cotton cellulose with solid superacid catalyst and selective conversion of cotton cellulose to glucose and 5-hydroxymethyl furfural (HMF). Five kinds of solid superacid catalyst such as SO42-/SnO2, SO42-/TiO2 SO42-/ZrO2, SO42-/Fe2O3 and SO42-/Al2O3 were prepared by impregnation method. The BET surface area of catalyst SO42-/SnO2 was up to 118.8 m(2) g(-1) when impregnation was performed with 1 mol L-1 H2SO4 of impregnating solution at 550 degrees C calcination temperature for 3 h. It made the hydrothermal temperature of cellulose degradation decrease to 190 degrees C successfully and suppressed the side reaction. The NH3-TPD profile of SO42-/SnO2 indicated there was a wide region of stronger acid sites on the catalyst surface. The depolymerization of cotton cellulose obtained 11.0% yield and 22.0% selectivity of HMF and 26.8% yield and 53.4% selectivity of glucose, respectively. The regeneration and reuse of solid superacid catalyst were also discussed in this paper. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：9 / 14
页数：6
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