High CO2/N2 Selectivity and H2 Adsorption of a Novel Porous Yttrium Metal鈥揙rganic Framework Based on N,N鈥?N鈥?/i>-Tris(isophthalyl)-1,3,5-benzenetricarboxamide

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• 作者：Kuanzhen Tang ; Ruirui Yun ; Zhiyong Lu ; Liting Du ; Mingxing Zhang ; Qian Wang ; Huiyan Liu
• 刊名：Crystal Growth & Design
• 出版年：2013
• 出版时间：April 3, 2013
• 年：2013
• 卷：13
• 期：4
• 页码：1382-1385
• 全文大小：273K
• 年卷期：v.13,no.4(April 3, 2013)
• ISSN：1528-7505

文摘

On the basis of a new topology, a novel yttrium metal鈥搊rganic framework [Y₂(TPBTM)(H₂O)₂]路xG (TPBTM = N,N鈥?N鈥?/i>-tris(isophthalyl)-1,3,5-benzenetricarboxamide and G = guest molecule) (NJU-Bai11) has been synthesized and structurally characterized. NJU-Bai11 crystallizes in a chiral space group and in its topological net and exists left of the helical rods, which are constituted from edge-sharing pyramidal polyhedra with points of extension as carboxylic carbon atoms along the a axis. NJU-Bai11 exhibits excellent adsorption capacity for CO₂ (130.0 cm³/g at 273 K, 1 bar) and H₂ (160.0 cm³/g at 77 K, 1 bar). Remarkably, NJU-Bai11 possesses high H₂ adsorption enthalpy (7.05 kJ/mol), which is approaching the highest value (7.3 kJ/mol) reported among rare-earth metal鈥搊rganic frameworks (RE-MOFs). In addition, a high selectivity ratio of 30.2 for CO₂ over N₂ makes NJU-Bai11 possess a potential practical application in gas purification.