A novel microporous zinc(II) metal-organic framework with highly selectivity adsorption of CO2 over CH4

• A microporous MOF has been prepared by mixing ligands.
• It exhibits highly selectivity adsorption of CO2 over CH4.
• It has high heat of adsorption of CO2.

Metal-organic frameworks (MOFs) have attracted a great deal of attention over the past two decades. Herein, we used a four-carboxylic acids linker, namely 3,3′,5,5′-azobenzene-tetracarboxylic acid (H4abtc), and adenine (ad) as the organic building blocks to form MOFs, not only because they are suitable to construct microporous frameworks, but also by reason of their multi-connectivity abilities. A microporous zinc(II) MOF material, [H2N(CH3)2]·[Zn4(abtc)2(ad)H2O)]·4DMF was successfully synthesized under solvothermal reactions. The resulting material demonstrates highly selective CO2 uptake over CH4.

A novel microporous zinc(II) metal-organic framework has been prepared by mixing ligands, which exhibits highly selectivity adsorption of CO2 over CH4 and high heat of adsorption of CO2.Figure optionsDownload as PowerPoint slide