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

Catalysis Communications

Xiaoyue Wan¹  Haolin Sun²  Siyu Yao²  Fei Song²  Yihu Dai²  Jianwei Zheng²  Chunmei Zhou²  Yuguang Jin²  Yanhui Yang³ 

[1] Corresponding authors.;Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, PR China;Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, PR China;

关键词: WO3 hydrates;    Lattice water;    Bronsted acid;    Fructose dehydration;   

DOI  :  

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown