Nanosize Zr-metal organic framework (UiO-66) for hydrogen and carbon dioxide storage

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• 作者：Hussein Rasool Abid^a ; Huyong Tian^b ; Ha-Ming Ang^a ; Moses O. Tade^a ; Craig E. Buckley^b ; Shaobin Wang^a ; ^{Shaobin.wang@curtin.edu.au}
• 关键词：Zr-metal organic framework ; Hydrogen ; Carbon dioxide ; Storage
• 刊名：Chemical Engineering Journal
• 出版年：2012
• 期刊代码：16_13858947
• 类别：ce
• 出版时间：1 April, 2012
• 卷：187
• 期：Complete
• 页码：415-420
• 文件大小：1193 K

摘要

A nanosize Zr-metal organic framework (Zr-MOF, UiO-66) with a uniformed particle size around 100 nm was solvothermally synthesized and activated by solvent exchange method, vacuum drying and heating. The activation process with an exchangeable guest solvent produced the Zr-MOF with a high surface area by removal almost all guest and free terephthalic acid molecules from the pores enhancing its capacity for adsorption. The nanosize Zr-MOF also showed strong thermal stability up to 753 K. The Zr-MOF was tested for hydrogen and carbon dioxide adsorption at varying pressures and temperatures and it exhibited adsorption capacity of 1.6 wt%(H₂) at 1 atm, 77 K and 79 cc (CO₂) g^鈭? at 1 atm, 273 K, respectively. The heat of H₂ adsorption was estimated to be 6-12 kJ mol^鈭? while the heat of CO₂ adsorption was determined to be around 28 kJ mol^鈭?.