Anionic Gallium-Based Metal鈭扥rganic Framework and Its Sorption and Ion-Exchange Properties

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• 作者：Debasis Banerjee ; Sun Jin Kim ; Haohan Wu ; Wenqian Xu ; Lauren A. Borkowski ; Jing Li ; John B. Parise
• 刊名：Inorganic Chemistry
• 出版年：2011
• 出版时间：January 3, 2011
• 年：2011
• 卷：50
• 期：1
• 页码：208-212
• 全文大小：785K
• 年卷期：v.50,no.1(January 3, 2011)
• ISSN：1520-510X

文摘

A gallium-based metal鈭抩rganic framework Ga₆(C₉H₃O₆)₈路(C₂H₈N)₆(C₃H₇NO)₃(H₂O)₂₆ [1, Ga₆(1,3,5-BTC)₈路6DMA路3DMF路26H₂O], GaMOF-1; BTC = benzenetricarboxylate/trimesic acid and DMA = dimethylamine], with space group I4̅3d, a = 19.611(1) 脜, and V = 7953.4(6) 脜³, was synthesized using solvothermal techniques and characterized by synchrotron-based X-ray microcrystal diffraction. Compound 1 contains isolated gallium tetrahedra connected by the organic linker (BTC) forming a 3,4-connected anionic porous network. Disordered positively charged ions and solvent molecules are present in the pore, compensating for the negative charge of the framework. These positively charged molecules could be exchanged with alkali-metal ions, as is evident by an ICP-MS study. The H₂ storage capacity of the parent framework is moderate with a H₂ storage capacity of 0.5 wt % at 77 K and 1 atm.