Polyvinyl Alcohol Functionalized Solid Acid Catalyst DICAT-1 for Microwave-Assisted Synthesis of 5-Hydroxymethylfurfural in Green Solvent

被引:16
作者
Pawar, Hitesh S. [1 ]
Lali, Arvind M. [1 ,2 ]
机构
[1] Inst Chem Technol, DBT ICT Ctr Energy Biosci, Bombay 400019, Maharashtra, India
[2] Inst Chem Technol, Dept Chem Engn, Bombay 400019, Maharashtra, India
关键词
green chemistry; heterogeneous catalysis; microwave chemistry; solvent effects; supported catalysts; POLY(VINYL ALCOHOL); CAPILLARY CONDENSATION; EFFICIENT PRODUCTION; FURAN-DERIVATIVES; FRUCTOSE; CONVERSION; DEHYDRATION; BIOMASS; WATER; RESIN;
D O I
10.1002/ente.201500498
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Microwave-assisted cyclodehydration of fructose to 5-hydroxymethylfurfural (5-HMF) was studied herein over polyvinyl alcohol (PVA)-functionalized solid acid catalyst DICAT-1 in low-boiling green solvents. Of the tested solvent systems [isopropanol (IPA), tert-butyl alcohol, THF, acetone, CH3CN, DMF, and DMSO], IPA was the preferred low boiling point (LBP) reaction medium, resulting in 95% fructose conversion and 85% 5-HMF yield in 120s. The characteristic dispersibility and swelling properties of DICAT-1 in IPA had a significant effect on 5-HMF yield. The catalyst DICAT-1 was stable and robust under the reaction conditions and easily recycled. The structural and morphological characteristics of the catalyst were elucidated by FTIR spectroscopy, SEM/energy-dispersive X-ray spectroscopy, X-ray fluorescence spectroscopy, XRD, and N-2 sorption analysis. DICAT-1 has covalently bonded -SO3H active sites, an amorphous nature, and mesoporous surface morphology; these features result in excellent performance in IPA. Estimated values of turnover number, turnover frequency, E-factor, and process mass intensity categorize the overall process as environmentally safe for the production of 5-HMF. A catalytic mechanism for 5-HMF formation on DICAT-1 is proposed.
引用
收藏
页码:823 / 834
页数:12
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