Abstract
We report reversible high capacity adsorption of SO2 in robust Zr-based metal–organic framework (MOF) materials. Zr-bptc (H4bptc=biphenyl-3,3′,5,5′-tetracarboxylic acid) shows a high SO2 uptake of 6.2 mmol g−1 at 0.1 bar and 298 K, reflecting excellent capture capability and removal of SO2 at low concentration (2500 ppm). Dynamic breakthrough experiments confirm that the introduction of amine, atomically-dispersed CuII or heteroatomic sulphur sites into the pores enhance the capture of SO2 at low concentrations. The captured SO2 can be converted quantitatively to a pharmaceutical intermediate, aryl N-aminosulfonamide, thus converting waste to chemical values. In situ X-ray diffraction, infrared micro-spectroscopy and inelastic neutron scattering enable the visualisation of the binding domains of adsorbed SO2 molecules and host–guest binding dynamics in these materials at the atomic level. Refinement of the pore environment plays a critical role in designing efficient sorbent materials.
Original language | English |
---|---|
Article number | e202207259 |
Journal | Angewandte Chemie - International Edition |
Volume | 61 |
Issue number | 36 |
DOIs | |
State | Published - Sep 5 2022 |
Funding
We thank EPSRC (EP/I011870), the Royal Society and The University of Manchester for funding. This project has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement No 742401, NANOCHEM). We are grateful to Diamond Light Source and Oak Ridge National Laboratory (ORNL) for access to Beamlines I11/B22 and VISION, respectively. A portion of this research used resources at the Spallation Neutron Source, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. The computing resources were made available through the VirtuES and the ICE-MAN projects, funded by Laboratory Directed Research and Development program and Compute and Data Environment for Science (CADES) at ORNL. We thank EPSRC (EP/I011870), the Royal Society and The University of Manchester for funding. This project has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement No 742401, ). We are grateful to Diamond Light Source and Oak Ridge National Laboratory (ORNL) for access to Beamlines I11/B22 and VISION, respectively. A portion of this research used resources at the Spallation Neutron Source, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. The computing resources were made available through the VirtuES and the ICE‐MAN projects, funded by Laboratory Directed Research and Development program and Compute and Data Environment for Science (CADES) at ORNL. NANOCHEM
Funders | Funder number |
---|---|
Compute and Data Environment for Science | |
Office of Science | |
Oak Ridge National Laboratory | I11/B22 |
Laboratory Directed Research and Development | |
Engineering and Physical Sciences Research Council | EP/I011870 |
Royal Society | |
University of Manchester | |
European Research Council | |
Horizon 2020 | 742401 |
Keywords
- Capture
- Conversion
- Crystallography
- Metal–Organic Frameworks
- Sulfur Dioxide