Pore size-controlled gases and alcohols separation within ultramicroporous homochiral lanthanide–organic frameworks

• Published in: Journal of materials chemistry Vol. 22; no. 16; pp. 7813 - 7818
• Main Authors: Lin, Zhongjun, Zou, Ruqiang, Liang, Jie, Xia, Wei, Xia, Dingguo, Wang, Yingxia, Lin, Jianhua, Hu, Tongliang, Chen, Qiang, Wang, Xidong, Zhao, Yusheng, Burrell, Anthony K.
• Format: Journal Article
• Language: English
• Published: 01.01.2012
• Subjects: Carbon dioxide; Dipole moment; Gas separation; Hysteresis; Isomers; Mathematical analysis; Separation; Surface area
• ISSN: 0959-9428; 1364-5501
• DOI: 10.1039/c2jm16324a

A novel homochiral ultramicroporous lanthanide-organic framework, Ce(BTB)(H sub(2)O) (1) (H sub(3)BTB = 1,3,5-benzenetrisbenzoic acid), with high surface area and two types of open ultramicropores has been synthesized under solvothermal condition, which exhibits an unusual stepwise hysteretic adsorption of O sub(2) and N sub(2) at 77 K and high-efficiency gas separations of CO sub(2)/N sub(2) and CH sub(4)/N sub(2) at 273 K. The ultramicropores of 1 lead to an unprecedented separation of the propanol isomers due to the slight differences of their geometry and dipole moments. Furthermore, the method for calculating the surface-area and gas separation for 1 is summarized. These will provide a general methodology that can be employed to simulate the surface area and gas separation properties of ultramicroporous materials.