A Novel Fluorinated Metal-organic Framework for Xenon/Krypton Separation  

作　　者：WU Xiao-Ling LI Zi-Jian TANG Fang-Dong QIAN Nan CHU Xin-Xin LIU Wei 吴小玲;李子建;唐方东;钱楠;楚鑫新;刘卫(Shanghai Institute of Applied Physics,Chinese Academy of Science,Shanghai 201800,China;Shanghai Institute of Measurement and Testing Technology,Shanghai 201203,China)

机构地区：[1]Shanghai Institute of Applied Physics,Chinese Academy of Science,Shanghai 201800,China [2]Shanghai Institute of Measurement and Testing Technology,Shanghai 201203,China

出　　处：《Chinese Journal of Structural Chemistry》2021年第1期85-90,3,共7页结构化学（英文）

基　　金：supported by the National Natural Science Foundation of China(No.51606210);Young Potential Program of Shanghai Institute of Applied Physics;Chinese Academy of Science(No.YX2019007);Science and Technology Project of Shanghai Municipal Bureau of Quality and Technology Supervision(No.2017-01)。

摘　　要：A porous metal-organic framework[C21H20CoF6O7]was synthesized with Co(CH3 COO)2·4 H2 O and CPHFP(2,2’-bis(4-carboxyphenyl)hexafluoro-propane)under hydrothermal conditions.This FMOF-Co has been characterized by elemental analysis,infrared spectroscopy,thermogravimetric analysis,single-crystal and powder X-ray diffraction.The crystal is of monoclinic space group P21/n with a=7.8911(2),b=29.9053(8),c=10.5811(3)Å,β=90.193(10)°,V=2499.70(12)Å^(3),Z=4,M_(r)=557.3,D_(c)=1.481 g·cm^(–3),F(000)=1132,μ=0.768 mm^(–1),GOOF=1.035,the final R=0.0722 and w R=0.2326 for 6347 observed reflections with I>2σ(I).The structure of FMOF-Co is constructed form the linkage of Co(II)through CPHFP,forming a 3 D net framework.The Kr and Xe uptake values are 0.225 and 0.484 mmol·g^(–1) at 303 K(100 KPa)with their mol selectivity to be 0.46;while the Kr and Xe uptake values are 0.486 and 0.077 mmol·g^(–1) at 233 K(100 KPa),with their mol separation being 6.29 at this condition.

关 键 词：fluorinated MOFs crystal structure gas adsorption 

分 类 号：O641.4[理学—物理化学]