Synthesis,Structures of 2D Coordination Layers Metal-Organic Frameworks with Highly Selective CO2 Up

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By a strategy of fine-tuning of packing mode between the adjacent layers in a 2D net metal-organic frameworks (MOFs) through lig-and changing,two 2D sql-type MOFs with highly selective CO2 uptake,CuHIN and CuHPB,were successfully synthesized.Compared with the precursor MOF-2,the fine-tuning structure of CuHIN shows selective adsorption of CO2 over N2 and CH4 with the CO2 uptake amounts as high as 4.7 wt% at 0.15 bar and at 298 K,and CO2 selectivity towards N2 and CH4 is 165.8 and 10.22 at 1 bar and at 298 K,respectively.In addition,for the 2D MOFs,the dynamic porous structure depends on the interaction of the adjacent layers.The suita-ble interaction is good for gliding smoothly and gas adsorption.
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