A new Co(II) metal-organic framework with enhanced CO2 adsorption and separation performance

作者：Liu, Xiao-Ting; Jia, Yan-Yuan; Zhang, Ying-Hui; Ren, Guo-Jian; Feng, Rui; Zhang, Shi-Yu; Zaworotkoc, Michael J.; Bu, Xian-He^*

来源：Inorganic Chemistry Frontiers, 2016, 3(12): 1510-1515.

DOI：10.1039/c6qi00191b

• POROUS COORDINATION POLYMER
• ZEOLITIC IMIDAZOLATE FRAMEWORKS
• SELECTIVE GAS-ADSORPTION
• CARBON-DIOXIDE CAPTURE
• SORPTION PROPERTIES
• HIGH-CAPACITY
• SITES
• LIGAND
• CH4
• FUNCTIONALIZATION

The new functional ligand 5-(1H-pyrazole-4-carboxamido) isophthalic acid (H3L) reacts with CoSO(4.)7H(2)O to form a new three-dimensional metal-organic framework, [Co-4(HL2-)(4)(DMF)(2)(H(2)O())2](n) . solvent (1) with a new (3,6)-connected topology. 1 exhibits one-dimensional polar channels with approximate dimensions of 6.0 x 8.0 angstrom(2) decorated with accessible functional sites. These sites contribute to enhanced CO2 uptake (103.2 cm(3) g(-1) at 273 K and 1 bar) and CO2/CH4 selectivity (7.25 for CO2/CH4 = 50 : 50; 8.59 for CO2/CH4 = 5 : 95) at 298 K and 1 bar. DFT calculations were also performed to elucidate the binding sites. These results suggest that complex 1 is an attractive candidate for CO2 adsorption and separation.

• 出版日期2016
• 单位南开大学