Catalytic Dehydration of Fructose into 5-Hydroxymethylfurfural by a DMSO-like Polymeric Solid Organocatalyst

被引:27
作者
Guo, Xiawei [1 ]
Tang, Jinqiang [1 ]
Xiang, Bo [2 ]
Zhu, Liangfang [1 ]
Yang, Huaqing [2 ]
Hu, Changwei [1 ]
机构
[1] Sichuan Univ, Key Lab Green Chem & Technol, Minist Educ, Coll Chem, Chengdu 610064, Sichuan, Peoples R China
[2] Sichuan Univ, Coll Chem Engn, Chengdu 610065, Sichuan, Peoples R China
关键词
5-hydroxymethylfurfural; catalytic dehydration; organocatalysis; polythiophene oxides; rehydration; FE3+-CATALYZED OXIDATIVE POLYMERIZATION; ACID CATALYSTS; DIMETHYL-SULFOXIDE; LEVULINIC ACID; CONVERSION; BIOMASS; EFFICIENT; POLYTHIOPHENE; CHEMICALS; SOLVENT;
D O I
10.1002/cctc.201700136
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Novel polymeric solid catalysts, Au@(polythiophene-polythiophene oxides) (Au@ PTh-PThOx, x= 1-2), are prepared by chemical over-oxidative polymerization of thiophene in the presence of Au nanoparticles. These organocatalysts show significantly higher activity than their liquid analogs (i.e., DMSO, a frequently-used solvent and catalyst) for the catalytic dehydration of fructose into 5-hydroxymethylfurfural (HMF) and exhibit a complete inhibiting effect on HMF rehydration to undesired levulinic acid in low-boiling solvents. We demonstrate that the sulfoxide (-SO) group in Au@ PTh-PThOx is more active than the sulfone (-SO2) group, although the formation of the former could be maximized by lowering the concentration of surfactant or improving the concentration of oxidant used in catalyst preparation. The highest HMF yields of 72.6% and 39.7% are achieved over Au@ PTh-PThO catalyst in 1,4-dioxane and water, respectively. This catalyst could be completely recycled for use in water without activity loss.
引用
收藏
页码:3218 / +
页数:9
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