A Novel Co(Ⅱ)-organic Framework with Multiple Active Sites for Selective Gas Adsorption

• 作 者: SHI Cheng-Dan TIAN Jia-Yue JIANG Fei-Long CHEN Qi-Hui HONG Mao-Chun
• 机 构: College of Chemistry and Materials Science,Fujian Normal University,Fuzhou 350007,China;State Key La
• 出 处: 结构化学
• 发表日期: 2021年2期
• 关键词: metal-organic frameworks gas adsorption gas purification open metal ions Lewis b

A novel metal-organic framework[Co(BTTA)(H2O)2]n(FJI-H24)has been prepared from H2BTTA ligand and CoCl2,and its structure was determined by single-crystal X-ray diffraction,thermogravimetric analysis,and Fourier transform infrared spectroscopy.It has relatively narrow pores and high density of open metal ions and free Lewis base sites.Gas adsorption tests demonstrate that FJI-H24 has moderate CO2(34.0 cm3.g-1)and C2H2(53.0 cm3·g-1)adsorption capacity,but displays high selectivity of CO2/N2(87)and C2H2/CH4(66)under ambient conditions(298 K,1 atm),which may be attributed to its relatively narrow pores and polar environment.This work will provide a potential strategy for preparing practical porous metal-organic frameworks for gas adsorption and purification.