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

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.