Metal

Catalysis

Adsorption

Sulfur dioxide

Engineering

Molecule

Inorganic chemistry

Chemical engineering

Physical chemistry

Physics

Organic chemistry

Optics

Synchrotron

Zirconium

Metal-organic framework

Zirconium dioxide

Sulfur

Chemistry

Selectivity

Diffraction

Journal of the American Chemical Society

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.

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