Adsorption of CO2, CO, CH4 and N2 on a zinc based metal organic framework

摘要: Abstract In this work, we report the gas adsorption properties of a zinc based metal organic framework, (Zn 2 (bdc) (dabco)(H O) 0.5 (DMF) 4 ), more commonly known as ZnDABCO. Equilibrium isotherms for four industrially relevant gases (CO , CO, CH and N ) were measured up to 26 bar at three different temperatures (294, 314 350 K) using standard gravimetric method. The modeled modified virial equation. Ideal Adsorbed Solution Theory (IAST) was used predict selectivity binary mixtures. results indicate that absence open centers in ZnDABCO lower capacities enthalpies when compared MOFs like CuBTC MIL-101. small values enthalpy Henry constant should make it easier regenerate adsorbent. IAST predicts an increase CO over other gases, with increasing pressure mole-fraction; phenomenon is attributed lateral interactions between adsorbed molecules. predictions also framework shows CO.