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

• 来源期刊: 结构化学
• 年，卷（期）: 2021,（2）
• 所属期刊栏目: coordination cbemistry
• 页码范围: 169-174
• 页数: 6页
• 语种: 英文
• DOI: 10.14102/j.cnki.0254-5861.2011-2784

摘要

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.