Adsorption of CH4 and CO2 on Zr-metal organic frameworks

Hussein Rasool Abid; Gia Hung Pham; Ha-Ming Ang; Moses O Tade; Shaobin Wang

doi:10.1016/j.jcis.2011.09.060

Adsorption of CH4 and CO2 on Zr-metal organic frameworks

J Colloid Interface Sci. 2012 Jan 15;366(1):120-124. doi: 10.1016/j.jcis.2011.09.060. Epub 2011 Oct 2.

Authors

Hussein Rasool Abid¹, Gia Hung Pham¹, Ha-Ming Ang¹, Moses O Tade¹, Shaobin Wang²

Affiliations

¹ Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
² Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia. Electronic address: [email protected].

PMID: 22014395
DOI: 10.1016/j.jcis.2011.09.060

Abstract

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.