Abstract ZIF-8 has become one of the most famous MOFs because of its high surface areas and chemical stability; however, the gas adsorption is unsatisfied in absence of active sites of its framework. In this work, we reported modified method to synthesize tetrahedral tetrazolate framework TTF-4 by using 5-methyltetrazole (5-Hmtz) to replace 2-methylimidazole (2-Hmim) in ZIF-8. Only by using DEF as solvent, TTF-4 can be steadily obtained in pure phase, which was proven by single crystal and powder X-ray diffraction. TTF-4 has similar surface areas and higher CO2 uptake than that of the former one and ZIF-8. More importantly, owing to the presence of uncoordinated N-sites of 5-mtz, TTF-4 exhibited higher C2H2 uptake (119 mL/g) than that of ZIF-8, which is also among the highest level of ZIFs.

中文翻译：

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用于乙炔储存的 SOD 型四面体四唑骨架的简便合成

摘要 ZIF-8因其高表面积和化学稳定性而成为最著名的MOFs之一；然而，由于缺乏其骨架的活性位点，气体吸附不令人满意。在这项工作中，我们报道了通过使用 5-甲基四唑 (5-Hmtz) 代替 ZIF-8 中的 2-甲基咪唑 (2-Hmim) 合成四面体四唑骨架 TTF-4 的改进方法。单晶和粉末X射线衍射证明，只有以DEF为溶剂，才能稳定地获得纯相的TTF-4。TTF-4 具有与前者和 ZIF-8 相似的表面积和更高的 CO2 吸收量。更重要的是，由于存在不协调的 5-mtz N 位点，TTF-4 表现出比 ZIF-8 更高的 C2H2 吸收（119 mL/g），这也是 ZIFs 中最高水平之一。