Issue 14, 2025, Issue in Progress

Bio-based cellulose benzenesulfonic acid-catalyzed dehydration of fructose to 5-hydroxymethylfurfural

Abstract

In this work, cellulose benzenesulfonic acid (CBSA) was successfully prepared by chemically modifying cellulose with a 4-chlorobenzenesulfonic acid reagent in toluene, providing mainly Brønsted acid sites, as determined by pyridine-DRIFT, for use as a potential solid acid catalyst. The as-prepared CBSA was characterized by various techniques, and its catalytic performance for the conversion of fructose to 5-HMF was examined in dimethyl sulfoxide. In particular, the effects of reaction temperature and reaction time on its activity were investigated. The results showed that CBSA with a 10 wt% loading exhibited the highest catalytic activity, achieving a fructose conversion of 100% and a 5-HMF yield of approximately 85% when a reaction temperature of 140 °C and a reaction time of 180 min were employed. The reusability of CBSA was moderately satisfactory. A 5-HMF yield of 55% and a fructose conversion of 97% were obtained after a total of 4 runs (3 reuse cycles). According to the XPS results of the spent catalyst, the decrease in catalytic performance was mainly due to the insufficiency or loss of the –SO3H group as the active site for the catalytic dehydration of fructose. These findings could be beneficial for advancing heterogeneous catalysis in saccharide valorization and the development of bio-based solid Brønsted acid catalysts.

Graphical abstract: Bio-based cellulose benzenesulfonic acid-catalyzed dehydration of fructose to 5-hydroxymethylfurfural

Supplementary files

Article information

Article type
Paper
Submitted
04 Dec 2024
Accepted
22 Mar 2025
First published
04 Apr 2025
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2025,15, 10511-10521

Bio-based cellulose benzenesulfonic acid-catalyzed dehydration of fructose to 5-hydroxymethylfurfural

A. Pengsawang, A. Srifa and V. Itthibenchapong, RSC Adv., 2025, 15, 10511 DOI: 10.1039/D4RA08540J

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