A comparative investigation of CO2 adsorption on powder and pellet forms of MIL-101

Abstract

Since shaping the powder adsorbents is necessary for industrial application of an adsorbent, in this study the powder form of synthesized MIL-101 was shaped into pellets, and their CO2 adsorption equilibrium and kinetic have been examined. The adsorption capacities were measured by a volumetric method at three different temperatures (298.2, 310.2 and 320.2 K) and pressures up to 7.1 bars. The powder and pellet forms of MIL-101 exhibited CO2 adsorption capacities of 9.72 and 6.34 mmol g−1 at 7.1 bar and 298.2 K, respectively. The experimental results demonstrated that the MIL-101 can be used after more than fifty successive adsorption-desorption cycles. © 2017 Taiwan Institute of Chemical Engineers