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High capacity ammonia adsorption in a robust metal-organic framework mediated by reversible host-guest interactions.

ABSTRACT: To understand the exceptional adsorption of ammonia (NH3) in MFM-300(Sc) (19.5 mmol g-1 at 273 K and 1 bar without hysteresis), we report a systematic investigation of the mechanism of adsorption by a combination of in situ neutron powder diffraction, inelastic neutron scattering, synchrotron infrared microspectroscopy, and solid-state 45Sc NMR spectroscopy. These complementary techniques reveal the formation of reversible host-guest supramolecular interactions, which explains directly the observed excellent reversibility of this material over 90 adsorption-desorption cycles.

SUBMITTER: Guo L

PROVIDER: S-EPMC9089318 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature

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High capacity ammonia adsorption in a robust metal-organic framework mediated by reversible host-guest interactions.

Guo Lixia L Han Xue X Ma Yujie Y Li Jiangnan J Lu Wanpeng W Li Weiyao W Lee Daniel D da Silva Ivan I Cheng Yongqiang Y Rudić Svemir S Manuel Pascal P Frogley Mark D MD Ramirez-Cuesta Anibal J AJ Schröder Martin M Yang Sihai S

Chemical communications (Cambridge, England) 20220510 38

To understand the exceptional adsorption of ammonia (NH3) in MFM-300(Sc) (19.5 mmol g-1 at 273 K and 1 bar without hysteresis), we report a systematic investigation of the mechanism of adsorption by a combination of in situ neutron powder diffraction, inelastic neutron scattering, synchrotron infrared microspectroscopy, and solid-state 45Sc NMR spectroscopy. These complementary techniques reveal the formation of reversible host-guest supramolecular interac ...[more]

PMID: 35446330

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