Expanded Porous MOF-505 Analogue Exhibiting Large Hydrogen Storage Capacity and Selective Carbon Dioxide Adsorption

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• 作者：Baishu Zheng ; Ruirui Yun ; Junfeng Bai ; Zhiyong Lu ; Liting Du ; Yizhi Li
• 刊名：Inorganic Chemistry
• 出版年：2013
• 出版时间：March 18, 2013
• 年：2013
• 卷：52
• 期：6
• 页码：2823-2829
• 全文大小：419K
• 年卷期：v.52,no.6(March 18, 2013)
• ISSN：1520-510X

文摘

An expanded 4,4-paddlewheel-connected porous MOF-505-type metal鈥搊rganic framework (MOF), [Cu₂(PDEB)(H₂O)₂]路xS (NJU-Bai12; NJU-Bai represents the Nanjing University Bai group and S represents noncoordinated solvent molecules) has been designed from a nanosized rectangular diisophthalate linker containing alkyne groups 5,5鈥?(1,4-phenylenedi-2,1-ethynediyl)bis(1,3-benzenecarboxylic acid). This MOF material possesses permanent microporosity with the highest Brunauer鈥揈mmett鈥揟eller surface area of 3038 m²路g^鈥? and the largest unsaturated total hydrogen storage capacity of 62.7 mg路g^鈥? at 77 K and 20 bar among reported MOF-505 analogues. Additionally, NJU-Bai12 also exhibits excellent carbon dioxide (CO₂) uptake capacity (23.83 and 19.85 mmol路g^鈥? at 20 bar for 273 and 298 K, respectively) and selective gas adsorption properties with CO₂/CH₄ selectivity of 5.0 and CO₂/N₂ selectivity of 24.6 at room temperature.