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Synthesis of 5-hydroxymethylfurfural from monosaccharides catalyzed by superacid VNU-11-SO4 in 1-ethyl-3-methylimidazolium chloride ionic liquid.

ABSTRACT: Superacid VNU-11-SO4, a modified metal-organic framework by post-synthetic treatment with a sulfuric acid solution, has been considered as a promising heterogeneous catalyst in the isomerization of glucose to fructose and further dehydration to form 5-hydroxymethylfurfural (HMF) due to its possession of both Lewis and Brønsted acid sites. In this work, we focused on using VNU-11-SO4 for the optimization of the conversion of fructose and glucose into HMF using an ionic liquid as a green solvent. The highest yields of HMF from glucose and fructose could be obtained in 28% (140 °C, 8 h) and 86% (110 °C, 3 h), respectively, with the use of VNU-11-SO4 catalyst in 1-ethyl-3-methylimidazolium chloride ionic liquid. Recycling examination of the catalyst showed only a slight decrease in the HMF yield, implying its potential industrial application in biomass transformation.

SUBMITTER: Thuy Nguyen LH 

PROVIDER: S-EPMC9057424 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature

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Synthesis of 5-hydroxymethylfurfural from monosaccharides catalyzed by superacid VNU-11-SO<sub>4</sub> in 1-ethyl-3-methylimidazolium chloride ionic liquid.

Thuy Nguyen Linh Ho LH   Vo Huong Thi HT   Phan Ha Bich HB   Dinh Dang Minh Huy MH   Le Hoang Doan Tan T   Tran Phuong Hoang PH  

RSC advances 20201030 65

Superacid VNU-11-SO<sub>4</sub>, a modified metal-organic framework by post-synthetic treatment with a sulfuric acid solution, has been considered as a promising heterogeneous catalyst in the isomerization of glucose to fructose and further dehydration to form 5-hydroxymethylfurfural (HMF) due to its possession of both Lewis and Brønsted acid sites. In this work, we focused on using VNU-11-SO<sub>4</sub> for the optimization of the conversion of fructose and glucose into HMF using an ionic liqui  ...[more]

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