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.
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)。
