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微波辅助合成稀土金属有机骨架和气体吸附

发布时间: 2017-05-07 20:36 来源: 拜泰齐贸易(上海)有限公司
领域: 纳米材料,高分子材料
样品:稀土金属有机骨架和气体吸附项目:稀土金属有机骨架和气体吸附
参考: Inorg. Chem. 2012, 51, 1813 − 1820

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微波辅助合成稀土金属有机骨架和气体吸附

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Microwave-Assisted Synthesis of a Series of Lanthanide Metal−Organic Frameworks and Gas Sorption Properties

 Inorg. Chem. 2012, 51, 1813 − 1820

摘要:

series of isostructural microporous lanthanide metal − organic frameworks (MOFs) formulated as

[Ln2 (TPO) 2 (HCOO)] · (Me2 NH2 ) · (DMF)4 · (H2 O)6 {Ln = Y (1), Sm (2), Eu (3), Gd (4), Tb (5), Dy (6), Ho (7), Er (8), Tm (9), Yb (10), and Lu (11); H3TPO = tris-(4-carboxylphenyl)phosphineoxide; DMF = N,N-dimethylformamide} has been synthesized under microwave-assisted solvothermal reaction for 30 min. Alternatively, if a conventional solvothermal reaction is carried out under the same temperature, a much longer time (3 days) is needed for the same phase in similar yield. Structure analysis reveals that the framework is a 4,8-connected network with point symbol (410 · 616 · 82) (45 · 6)2, which is the subnet of albnet. Thermal gravimetric analyses performed on as-synthesized MOFs reveal that the frameworks have high thermal stability. The

luminescent properties of 2, 3, 5, and 6 were investigated and show characteristic emissions for Sm(III), Eu(III), Tb(III), and Dy(III) at room temperature, respectively. Gas sorption properties of 1 and 3 were studied by experimentally measuring nitrogen, argon, carbon dioxide, methane, and hydrogen sorption isotherms. The resulting materials show high and preferential CO2 adsorption over N2 gas at ambient temperature, indicating that the present materials can be applied in a CO2 capture process.


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