A new aluminium-based microporous metal-organic framework: Al(BTB) (BTB = 1,3,5-benzenetrisbenzoate)

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• 作者：Helge Reinsch^a ; Martin Krü ; ger^a ; Julia Wack^b ; Jü ; rgen Senker^b ; Fabrice Salles^c ; Guillaume Maurin^c ; Norbert Stock^a ; ^{stock@ac.uni-kiel.de}
• 关键词：Metal organic framework ; High-throughput methods ; Solvothermal synthesis ; Metal carboxylate ; Aluminium
• 刊名：Microporous and Mesoporous Materials
• 出版年：2012
• 期刊代码：78_13871811
• 类别：ch
• 出版时间：15 July, 2012
• 卷：157
• 期：Complete
• 页码：50-55
• 文件大小：634 K

摘要

The system Al³⁺/H₃BTB/DMF/additive was systematically investigated using high-throughput methods and the new, microporous MOF [Al(BTB)] (BTB = 1,3,5-benzenetrisbenzoate), named CAU-4 (CAU = Christian-Albrechts-University), was discovered. The synthesis was optimized changing chemical and process parameters and the final synthesis procedure was scaled up to the gram scale. CAU-4 is thermally stable up to 400 掳C in air and exhibits a BET-surface area of 1520 m²/g and a micropore volume of 0.61 cm³/g. A structure model was developed using a computationally assisted structure determination that was further validated by a good agreement with the experimental X-ray diffraction patterns and the geometrical features. The framework structure consists of isolated [AlO₆]-octahedra which are bridged by carboxylate groups of the BTB-linker to form chains. These chains are connected by the tritopic aromatic building blocks, to form one-dimensional hexagonal channels with a diameter of ca. 9.6 脜.