Details

Autor(en) / Beteiligte

• Xiaoqing Wang Libo Li Jiangfeng Yang Jinping Li

Titel

CO_2/CH_4 and CH_4/N_2 separation on isomeric metal organic frameworks

Ist Teil von

• 中国化学工程学报：英文版, 2016, Vol.24 (12), p.1687-1694

Erscheinungsjahr

2016

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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_2,CH_4 and N_2 adsorption properties of the two isomeric MOFs were investigated from 263 K to 298 K at0.1 MPa.The results showed that the 2D MOF exhibited a higher selectivity for CO_2 from CO_2/CH_4 and CH_4from CH_4/N_2 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_2/CH_4 and CH_4/N_2 mixtures on the two MOFs proved that the2 D MOF had a longer elution time than the 3D MOF as well as better separation abilities.