Scaled-up and Defect Properties of Microporous Aluminum Metal-Organic Framework

• Main Authors: Ben-Siang Liao, 廖本翔
• Other Authors: Chia-Her Lin
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/f244jz

碩士 === 中原大學 === 化學研究所 === 107 === 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.