An antiferromagnetic metalloring pyrazolate (Pz) framework with [Cu12(μ2-OH)12(Pz)12] nodes for separation of C2H2/CH4 mixture. Issue 40 (3rd October 2018)

• Record Type: Journal Article
• Authors: Li, Ziyin; Ye, Yingxiang; Yao, Zizhu; Guo, Junzhi; Lin, Quanjie; Zhang, Jindan; Zhang, Zhangjing; Wei, Fangfang; Xiang, Shengchang
• Is Part Of: Journal of materials chemistry. Volume 6:Issue 40(2018)
• Page Start: 19681
• Page End: 19688
• Publication Date: 2018-10-03
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c8ta04498h
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : An antiferromagnetic pyrazolate (Pz)MROF-12 with cyclic-type [Cu12 (μ2 -OH)12 (Pz)12 ] clusters and new topology of the Schläfli symbol {4 60 .6 6 } was reported for the separation of C2 H2 /CH4 or CO2 /CH4 mixture. Abstract : The search for functional metalloring organic frameworks (MROFs) has been of continuous interest in the fields of both molecular rings and metal–organic frameworks (MOFs) due to their importance in many multifunctional applications. Herein, a hierarchical pyrazolate frameworkMROF-12 with the topology of the Schläfli symbol {4 60 .6 6 } is reported, which is constructed by an elongated rigid ligand and attractive metalloring cluster nodes [Cu12 (μ2 -OH)12 (Pz)12 ].MROF-12 not only adopts the unique functionalities of the metalloring clusters but also inherits the porous properties of MOFs. The large [Cu12 (μ2 -OH)12 (Pz)12 ] metalloring nodes with the diameter of 12.202 Å endowMROF-12 with excellent stability and antiferromagnetism, and they are bridged by linear pyrazolate ligands (H2 NDI) to form micro–mesoporous MROF with permanent porosity. The activated sampleMROF-12a can exhibit a relatively high Brunauer–Emmett–Teller/Langmuir surface area (460.7/571.9 m 2 g −1 ) as well as pore volume of 0.240 cm 3 g −1 . Dynamic fixed bed breakthrough experiments indicate that the separation of C2 H2 /CH4 or CO2 /CH4 mixtures can be efficiently achieved through a column packed withMROF-12a solid.