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Tuning Bronsted and Lewis acidity on phosphated titanium dioxides for efficient conversion of glucose to 5-hydroxymethylfurfural
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Document Title
Tuning Bronsted and Lewis acidity on phosphated titanium dioxides for efficient conversion of glucose to 5-hydroxymethylfurfural
Author
Songtawee S, Rungtaweevoranit B, Klaysom C, Faungnawakij K
Name from Authors Collection
Affiliations
National Science & Technology Development Agency - Thailand; National Nanotechnology Center (NANOTEC); Chulalongkorn University; Chulalongkorn University; Chulalongkorn University
Type
Article
Source Title
RSC ADVANCES
Year
2021
Volume
11
Issue
5
Open Access
Green Published, gold
Publisher
ROYAL SOC CHEMISTRY
DOI
10.1039/d1ra06002c
Format
Abstract
5-Hydroxymethylfurfural (HMF) derived from cellulosic sugars has become increasingly important as a platform chemical for the biorefinery industry because of its versatility in the conversion to other chemicals. Although HMF can be produced in high yield from fructose dehydration, fructose is rather expensive because it requires multiple processing steps. On the other hand, HMF can be produced directly from highly abundant glucose, which could reduce time and cost. However, an effective and multifunctional catalyst is needed to selectively promote the glucose-to-HMF reaction. In this work, we report a bifunctional phosphated titanium dioxide as an efficient catalyst for such a reaction. The best catalyst exhibits excellent catalytic performance for the glucose conversion to HMF with 72% yield and 83% selectivity in the biphasic system. We achieve this by tuning the solvent system, controlling the amount of Bronsted and Lewis acid sites on the catalyst, and modification of the reaction setup. From the analysis of acid sites, we found that the addition of phosphate group (Bronsted acid site) onto the surface of TiO2 (Lewis acid site) significantly enhanced the HMF yield and selectivity when the optimum ratio of Bronsted and Lewis acid sites is reached. The high catalytic activity, good reusability, and simple preparation method of the catalyst show a promise for the potential use of this catalytic system on an industrial scale.
Funding Sponsor
Nanocatalysis and Molecular Simulation research group, National Nanotechnology Center [P1857155]; Thailand Graduate Institute of Science and Technology (TGIST) from National Science and Technology Development Agency (NSTDA); Program Management Unit Competitiveness [C10F630222]
License
CC-BY-NC
Rights
Authors
Publication Source
WOS