微孔洞鋁金屬有機骨架之量產與缺陷性質探討

本研究論文中，成功利用低成本非致癌性的溶劑異丙醇(IPA)合成微孔洞鋁金屬有機骨架(Al-MOF)，經過活化後所得的BET比表面積為1698 m2g-1。材料以一般加熱法合成，將六水合氯化鋁(AlCl3‧6H2O)、對苯二甲酸(H2BDC)、異丙醇(IPA)進行反應合成Al-MOF。並在固定配位基與溶劑使用量的條件下，調整金屬試劑的濃度，製備不同金屬試劑(M)與有機配位基(L)比例的Al-MOF。其中當M/L = 2時，是最佳的合成條件。並進一步以M/L = 2的反應為基礎進行簡易量產的實驗，本研究目前做到500倍量的反應實驗，其仍舊具有MIL-68的結構，BET比表面積達1394 m2g-1。活化之Al-MOFs產物，其結構鑑定與理論計算得出之MIL-68(Al) 相符。孔隙與表面積分析儀顯示氮氣吸脫附曲線的結果。不同M/L比例與反應條件鋁配位數的情況，在固態核磁共振(27Al-NMR)的分析結果中只表現出了六配位鋁的行為，故此結構中缺陷的發生對於鋁配位數並未產生影響。實驗結果，M/L = 2的產物BET比表面積為1698 m2g-1，孔徑分布為8.25、11.29、14.87 Å。

關鍵字

鋁金屬有機骨架

並列摘要

In this study, the microporous aluminum metal organic framework (Al-MOF) was successfully synthesized by low-cost non-carcinogenic solvent isopropanol (IPA). After activation, the BET specific surface area was 1698 m2g-1. This Al-MOF is synthesized by a general heating method, and aluminum chloride hexahydrate, terephthalic acid and isopropanol. We have synthesized Al-MOFs via using different metal reagent (M) and organic ligand (L) ratio(M/L) in the condition of fixing ligand and solvent amount. Among them, when M/L = 2, it is the best synthesis condition. Furthermore, the experiment of scaled-up production was based on this ratio reaction. The present research has achieved a 500 times reaction experiment, which still has the structure of MIL-68, and the BET specific surface area is 1394 m2g-1. The structure of the activated Al-MOFs product is consistent with the theoretical calculation of MIL-68 (Al). The pore and surface area analyzer showed the results of the nitrogen adsorption desorption curve. The behavior of aluminum coordination number in different M/L ratios and reaction conditions shows only the behavior of hexa-coordinate aluminum in the solid-state NMR (27Al-NMR) analysis. Therefore, the occurrence of defects in the structure was not affected the aluminum coordination number. The experimental results show that the product BET specific surface area of M/L = 2 is 1698 m2g-1, and the pore size distribution is 8.25, 11.29, 14.87 Å.