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Synergistic Catalysis of Brønsted Acid and Lewis Acid Coexisted on Ordered Mesoporous Resin for One-Pot Conversion of Glucose to 5-Hydroxymethylfurfural

[Image: see text] A novel bifunctional ordered phenolic resin with Brønsted acid and Lewis acid sites (Yb(OTf)(2)/PhSO(3)H-MPR) was prepared for the first time by a two-step sulfonation and postgrafting protocol. The Brønsted acids (benzenesulfonic acids) were transformed from the phenyl groups that...

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Detalles Bibliográficos
Autores principales: Wang, Kaixuan, Liang, Chao, Zhang, Qingxiao, Zhang, Fang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2019
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6649308/
https://www.ncbi.nlm.nih.gov/pubmed/31459381
http://dx.doi.org/10.1021/acsomega.8b02982
Descripción
Sumario:[Image: see text] A novel bifunctional ordered phenolic resin with Brønsted acid and Lewis acid sites (Yb(OTf)(2)/PhSO(3)H-MPR) was prepared for the first time by a two-step sulfonation and postgrafting protocol. The Brønsted acids (benzenesulfonic acids) were transformed from the phenyl groups that existed in the skeleton of ordered mesoporous phenolic resin. Meanwhile, the benzenesulfonic acids can coordinate with Yb(OTf)(3) compound, resulting in the generation of Lewis acids in the pore channels of ordered phenolic resin. Yb(OTf)(2)/PhSO(3)H-MPR sample retained large specific surface and well-ordered hexagonal mesopores. As expected, it can promote one-pot cascade reaction by using glucose as the reactant to produce 5-hydroxymethylfurfural with good conversion and moderate selectivity. This synergistic catalytic performance could be attributed to its uniformly distributed Brønsted–Lewis acids. Meanwhile, the intrinsic hydrophobic pore surface can decrease the interference of water solvent, leading to enhanced catalytic efficiency. Besides, it was reused more than five times, showing good stability in water.