Drastic enhancement of the CO2 adsorption properties in sulfone-functionalized Zr- and Hf-UiO-67 MOFs with hierarchical mesopores

Pantelis Xydias; Ioannis Spanopoulos; Emmanuel Klontzas; George E Froudakis; Pantelis N Trikalitis

doi:10.1021/ic402430n

Drastic enhancement of the CO2 adsorption properties in sulfone-functionalized Zr- and Hf-UiO-67 MOFs with hierarchical mesopores

Inorg Chem. 2014 Jan 21;53(2):679-81. doi: 10.1021/ic402430n. Epub 2013 Dec 24.

Authors

Pantelis Xydias¹, Ioannis Spanopoulos, Emmanuel Klontzas, George E Froudakis, Pantelis N Trikalitis

Affiliation

¹ Department of Chemistry, University of Crete , Voutes 71003, Heraklion, Greece.

PMID: 24368056
DOI: 10.1021/ic402430n

Abstract

The sulfone-functionalized Zr- and Hf-UiO-67 metal-organic frameworks with hierarchical mesopores were successfully synthesized using the ligand 4,4'-dibenzoic acid-2,2'-sulfone, with acetic acid or HCl as the modulator. Compared to UiO-67, the zirconium solid shows a remarkable 122% increase in CO2 uptake, reaching 4.8 mmol g(-1) (17.4 wt %) at 1 bar and 273 K (145% at 298 K) and more than 100% increase in CO2/CH4 selectivity.