CO2/CH4 and CH4/N2 separation on isomeric metal organic frameworks

Xiaoqing Wang; Libo Li; Jiangfeng Yang; Jinping Li

doi:10.1016/j.cjche.2016.05.013

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CO₂/CH₄ and CH₄/N₂ separation on isomeric metal organic frameworks

Separation Science and Engineering | Updated：2026-01-06

- CO₂/CH₄ and CH₄/N₂ separation on isomeric metal organic frameworks
- Chinese Journal of Chemical Engineering Vol. 24, Issue 12, Pages: 1687-1694(2016)
- Affiliations：
  
  Research Institute of Special Chemicals, Taiyuan University of Technology,Taiyuan,China,030024
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2016.05.013
  CLC：
- Published：2016
- Accepted：
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摘要

Abstract

Two isomeric metal-organic frameworks (MOFs) with 2-dimensional (2D) and 3-dimensional (3D) topologies both comprised of Cu(II) and OTf (OTf=trifluoromethanesulfonate) ions were synthesized and characterized. The CO

and N

adsorption properties of the two isomeric MOFs were investigated from 263 K to 298 K at 0.1 MPa. The results showed that the 2D MOF exhibited a higher selectivity for CO

from CO

/CH

and CH

from CH

compared to the 3D MOF

even though it possessed a lower surface area and pore volume. The higher adsorption heats of gases on the 2D MOF inferred the strong adsorption potential energy in the layered MOFs. Dynamic separation experiments using CO

/CH

and CH

mixtures on the two MOFs proved that the 2D MOF had a longer elution time than the 3D MOF as well as better separation abilities.

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