Vanadium-Substituted Polycationic Al-Oxo Cluster in a Porous Ionic Crystal Exhibiting Lewis Acidity
Vanadium-Substituted Polycationic Al-Oxo Cluster in a Porous Ionic Crystal Exhibiting Lewis Acidity
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具有路易斯酸性的多孔离子晶体中钒取代的聚阳离子 Al-Oxo 簇
DOI：
10.1039/d2cc03545f
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
S. Uchida*
中科院分区：
文献类型：
--
作者：
W. Zhou;N. Ogiwara*;Z. Weng;C. Zhao;L. Yan;Y. Kikukawa;S. Uchida*
本文提出了钒取代的δ-Keggin Al 13基（Al 28V 4）多孔离子晶体（PIC）（Al 28V 4-PW 9V 3）的第一个例子。结构和理论研究表明，Al 28 V4可能具有刘易斯酸性，并通过Al 28 V4-PW 9 V3催化的缩醛反应和吡啶、2，6-二甲基吡啶为探针分子的研究证实了这一点。与δ-Keggin Al 13单体PIC的比较研究表明，钒取代引起了刘易斯酸性。
Herein we present the first example of a vanadium-substituted δ-Keggin Al13-based (Al28V4) porous Ionic crystal (PIC) (Al28V4-PW9V3). Structural and theoretical studies suggested that Al28V4 may exhibit Lewis acidity, which was confirmed by acetalization reaction with Al28V4-PW9V3 as a solid catalyst and investigations with pyridine or 2,6-lutidine as basic probe molecules. A comparative study with the δ-Keggin Al13 monomer based PIC indicated that the vanadium-substitution gave rise to the Lewis acidity.