期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 7, 期 8, 页码 7552-7562出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.8b05684
关键词
Glucose; 5-Hydroxymethylfurfural; Tungsten oxide; Mesopores; Sol-gel; Template free
资金
- Netherlands Center for Multiscale Catalytic Energy Conversion (MCEC)
- NWO Gravitation programme - Ministry of Education, Culture and Science of the government of The Netherlands
Glucose valorization to 5-hydroxymethylfurfural (5-HMF) remains a challenging conversion that is highly relevant in the transition toward a sustainable chemical industry. Lewis acidic tungstite is a viable, moderately active catalyst for glucose upgrading to 5-HMF but suffers from low surface area and weak Bronsted acidity. A facile nontemplated sol-gel process produces a mesoporous substoichiometric tungsten oxide with high surface area and Bronsted acidity, and increased activity toward 5-HMF production. The material is easily doped with early transition metals, which strongly modify physico-chemical parameters such as the acidity and, accordingly, the catalytic activity of the mesoporous oxide. Glucose was converted to 5-HMF in H2O/THF mixtures using doped and undoped materials. Kinetic parameters established by variation of the temperature and reaction times show a strong dependence on the nature of the dopant and pretreatment of the catalytic material.
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