双金属片
介孔材料
共轭体系
路易斯酸
双功能
铌
化学
生物量(生态学)
红外光谱学
化学工程
催化作用
无机化学
组合化学
有机化学
聚合物
工程类
地质学
海洋学
作者
Mengtian Fan,Shaojun Xu,Bing An,Alena M. Sheveleva,Alexander Betts,Joseph Hurd,Zhaodong Zhu,Meng He,Dinu Iuga,Longfei Lin,Xinchen Kang,Christopher M. A. Parlett,Floriana Tuna,Eric J. L. McInnes,Luke L. Keenan,Daniel Lee,Martin P. Attfield,Sihai Yang
标识
DOI:10.1002/anie.202212164
摘要
The production of conjugated C4-C5 dienes from biomass can enable the sustainable synthesis of many important polymers and liquid fuels. Here, we report the first example of bimetallic (Nb, Al)-atomically doped mesoporous silica, denoted as AlNb-MCM-41, which affords quantitative conversion of 2-methyltetrahydrofuran (2-MTHF) to pentadienes with a high selectivity of 91 %. The incorporation of AlIII and NbV sites into the framework of AlNb-MCM-41 has effectively tuned the nature and distribution of Lewis and Brønsted acid sites within the structure. Operando X-ray absorption, diffuse reflectance infrared and solid-state NMR spectroscopy collectively reveal the molecular mechanism of the conversion of adsorbed 2-MTHF over AlNb-MCM-41. Specifically, the atomically-dispersed NbV sites play an important role in binding 2-MTHF to drive the conversion. Overall, this study highlights the potential of hetero-atomic mesoporous solids for the manufacture of renewable materials.
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