In:
Angewandte Chemie International Edition, Wiley, Vol. 61, No. 36 ( 2022-09-05)
Abstract:
We report reversible high capacity adsorption of SO 2 in robust Zr‐based metal–organic framework (MOF) materials. Zr‐bptc (H 4 bptc=biphenyl‐3,3′,5,5′‐tetracarboxylic acid) shows a high SO 2 uptake of 6.2 mmol g −1 at 0.1 bar and 298 K, reflecting excellent capture capability and removal of SO 2 at low concentration (2500 ppm). Dynamic breakthrough experiments confirm that the introduction of amine, atomically‐dispersed Cu II or heteroatomic sulphur sites into the pores enhance the capture of SO 2 at low concentrations. The captured SO 2 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 SO 2 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.
Type of Medium:
Online Resource
ISSN:
1433-7851
,
1521-3773
DOI:
10.1002/anie.202207259
Language:
English
Publisher:
Wiley
Publication Date:
2022
detail.hit.zdb_id:
2011836-3
detail.hit.zdb_id:
123227-7
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