Adsorption of CH4 and CO2 on Zr-metal organic frameworks.
Zirconium-metal organic frameworks (Zr-MOFs) were synthesized with or without ammonium hydroxide as an additive in the synthesis process. It was found that addition of ammonium hydroxide would change the textural structure of Zr-MOF. The BET surface area, pore volume, and crystal size of Zr-MOF were reduced after addition of ammonium hydroxide. However, the crystalline structure and thermal stability were maintained and no functional groups were formed. Adsorption tests showed that Zr-MOF presented much higher CO(2) adsorption than CH(4). Zr-MOF exhibited CO(2) and CH(4) adsorption of 8.1 and 3.6 mmol/g, respectively, at 273 K, 988 kPa. The addition of ammonium hydroxide resulted in the Zr-MOF with a slight lower adsorption of CO(2) and CH(4), however, the selectivity of CO(2)/CH(4) is significantly enhanced.
Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
Hussein Rasool
HR
Abid
Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
Gia Hung
GH
Pham
Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
Ha-Ming
HM
Ang
Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
Moses O
MO
Tade
Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia. Electronic address: Shaobin.wang@curtin.edu.au.
Shaobin
S
Wang