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

We report a record-high SO(2) adsorption capacity of 12.3 mmol g(-1) in a robust porous material, MFM-601, at 298 K and 1.0 bar. SO(2) adsorption in MFM-601 is fully reversible and highly selective over CO(2) and N(2). The binding domains for adsorbed SO(2) and CO(2) 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.