In:
Angewandte Chemie, Wiley, Vol. 135, No. 28 ( 2023-07-10)
Abstract:
We report the modulation of reactivity of nitrogen dioxide (NO 2 ) in a charged metal–organic framework (MOF) material, MFM‐305‐CH 3 in which unbound N‐centres are methylated and the cationic charge counter‐balanced by Cl − ions in the pores. Uptake of NO 2 into MFM‐305‐CH 3 leads to reaction between NO 2 and Cl − to give nitrosyl chloride (NOCl) and NO 3 − anions. A high dynamic uptake of 6.58 mmol g −1 at 298 K is observed for MFM‐305‐CH 3 as measured using a flow of 500 ppm NO 2 in He. In contrast, the analogous neutral material, MFM‐305, shows a much lower uptake of 2.38 mmol g −1 . The binding domains and reactivity of adsorbed NO 2 molecules within MFM‐305‐CH 3 and MFM‐305 have been probed using in situ synchrotron X‐ray diffraction, inelastic neutron scattering and by electron paramagnetic resonance, high‐field solid‐state nuclear magnetic resonance and UV/Vis spectroscopies. The design of charged porous sorbents provides a new platform to control the reactivity of corrosive air pollutants.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v135.28
DOI:
10.1002/ange.202302602
Language:
English
Publisher:
Wiley
Publication Date:
2023
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505868-5
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506609-8
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514305-6
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505872-7
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1479266-7
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505867-3
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506259-7
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