Exceptional Adsorption and Binding of Sulfur Dioxide in a Robust Zirconium-Based Metal–Organic Framework

Abstract

We report a record-high SO₂ adsorption capacity of 12.3 mmol g^-1 in a robust porous material, MFM-601, at 298 K and 1.0 bar. SO₂ adsorption in MFM-601 is fully reversible and highly selective over CO₂ and N₂. The binding domains for adsorbed SO₂ and CO₂ molecules in MFM-601 have been determined by in situ synchrotron X-ray diffraction experiments, giving insights at the molecular level to the basis of the observed high selectivity.