Lattice-water-induced acid sites in tungsten oxide hydrate for catalyzing fructose dehydration

Haolin Sun; Fei Song; Chunmei Zhou; Xiaoyue Wan; Yuguang Jin; Yihu Dai; Jianwei Zheng; Siyu Yao; Yanhui Yang

doi:10.1016/j.catcom.2020.106254

Lattice-water-induced acid sites in tungsten oxide hydrate for catalyzing fructose dehydration

Haolin Sun, Fei Song, Chunmei Zhou, Xiaoyue Wan, Yuguang Jin, Yihu Dai, Jianwei Zheng, Siyu Yao, Yanhui Yang

School of Chemistry and Moleculai Engineering

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

Herein, hydrated WO₃ was synthesized by hydrothermal method, and the relationship between its structure and acidity was explored. The numbers of Brønsted acid sites (BAS) and Lewis acid sites (LAS) can be modulated by adjusting the lattice water content of WO₃·nH₂O. Mechanism studies shown that the density of BAS and diffusion effect have a synergistic effect on the activity of dehydration reaction. The optimized WO₃·0.5H₂O catalyst in the presence of both high BAS density and high BAS accessibility afforded 73% 5-hydroxymethylfurfural (HMF) yield, and almost no deactivation appeared after five cycles. Nearly twice higher turnover frequency (TOF) and 50% higher HMF selectivity were observed in comparison to anhydrous WO₃.

Original language	English
Article number	106254
Journal	Catalysis Communications
Volume	149
DOIs	https://doi.org/10.1016/j.catcom.2020.106254
State	Published - 15 Jan 2021

Keywords

Bronsted acid
Fructose dehydration
Lattice water
WO hydrates

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10.1016/j.catcom.2020.106254

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title = "Lattice-water-induced acid sites in tungsten oxide hydrate for catalyzing fructose dehydration",

abstract = "Herein, hydrated WO3 was synthesized by hydrothermal method, and the relationship between its structure and acidity was explored. The numbers of Br{\o}nsted acid sites (BAS) and Lewis acid sites (LAS) can be modulated by adjusting the lattice water content of WO3·nH2O. Mechanism studies shown that the density of BAS and diffusion effect have a synergistic effect on the activity of dehydration reaction. The optimized WO3·0.5H2O catalyst in the presence of both high BAS density and high BAS accessibility afforded 73% 5-hydroxymethylfurfural (HMF) yield, and almost no deactivation appeared after five cycles. Nearly twice higher turnover frequency (TOF) and 50% higher HMF selectivity were observed in comparison to anhydrous WO3.",

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author = "Haolin Sun and Fei Song and Chunmei Zhou and Xiaoyue Wan and Yuguang Jin and Yihu Dai and Jianwei Zheng and Siyu Yao and Yanhui Yang",

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doi = "10.1016/j.catcom.2020.106254",

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T1 - Lattice-water-induced acid sites in tungsten oxide hydrate for catalyzing fructose dehydration

AU - Sun, Haolin

AU - Song, Fei

AU - Zhou, Chunmei

AU - Wan, Xiaoyue

AU - Jin, Yuguang

AU - Dai, Yihu

AU - Zheng, Jianwei

AU - Yao, Siyu

AU - Yang, Yanhui

PY - 2021/1/15

Y1 - 2021/1/15

N2 - Herein, hydrated WO3 was synthesized by hydrothermal method, and the relationship between its structure and acidity was explored. The numbers of Brønsted acid sites (BAS) and Lewis acid sites (LAS) can be modulated by adjusting the lattice water content of WO3·nH2O. Mechanism studies shown that the density of BAS and diffusion effect have a synergistic effect on the activity of dehydration reaction. The optimized WO3·0.5H2O catalyst in the presence of both high BAS density and high BAS accessibility afforded 73% 5-hydroxymethylfurfural (HMF) yield, and almost no deactivation appeared after five cycles. Nearly twice higher turnover frequency (TOF) and 50% higher HMF selectivity were observed in comparison to anhydrous WO3.

AB - Herein, hydrated WO3 was synthesized by hydrothermal method, and the relationship between its structure and acidity was explored. The numbers of Brønsted acid sites (BAS) and Lewis acid sites (LAS) can be modulated by adjusting the lattice water content of WO3·nH2O. Mechanism studies shown that the density of BAS and diffusion effect have a synergistic effect on the activity of dehydration reaction. The optimized WO3·0.5H2O catalyst in the presence of both high BAS density and high BAS accessibility afforded 73% 5-hydroxymethylfurfural (HMF) yield, and almost no deactivation appeared after five cycles. Nearly twice higher turnover frequency (TOF) and 50% higher HMF selectivity were observed in comparison to anhydrous WO3.

KW - Bronsted acid

KW - Fructose dehydration

KW - Lattice water

KW - WO hydrates

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U2 - 10.1016/j.catcom.2020.106254

DO - 10.1016/j.catcom.2020.106254

M3 - 文章

AN - SCOPUS:85097460791

SN - 1566-7367

VL - 149

JO - Catalysis Communications

JF - Catalysis Communications

M1 - 106254

ER -

Lattice-water-induced acid sites in tungsten oxide hydrate for catalyzing fructose dehydration

Abstract

Keywords

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