通过可逆的主客体相互作用介导的坚固金属有机框架中的高容量氨吸附。
High capacity ammonia adsorption in a robust metal-organic framework mediated by reversible host-guest interactions.
作者信息
Guo Lixia, Han Xue, Ma Yujie, Li Jiangnan, Lu Wanpeng, Li Weiyao, Lee Daniel, da Silva Ivan, Cheng Yongqiang, Rudić Svemir, Manuel Pascal, Frogley Mark D, Ramirez-Cuesta Anibal J, Schröder Martin, Yang Sihai
机构信息
Department of Chemistry, University of Manchester, Manchester, M13 9PL, UK.
Department of Chemical Engineering and Analytical Science, University of Manchester, Manchester, M13 9PL, UK.
出版信息
Chem Commun (Camb). 2022 May 10;58(38):5753-5756. doi: 10.1039/d2cc01197b.
To understand the exceptional adsorption of ammonia (NH) in MFM-300(Sc) (19.5 mmol g at 273 K and 1 bar without hysteresis), we report a systematic investigation of the mechanism of adsorption by a combination of neutron powder diffraction, inelastic neutron scattering, synchrotron infrared microspectroscopy, and solid-state Sc 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.
为了理解MFM-300(Sc)对氨（NH₃）的优异吸附性能（在273 K和1 bar下为19.5 mmol g⁻¹且无滞后现象），我们通过结合中子粉末衍射、非弹性中子散射、同步辐射红外显微光谱和固态Sc NMR光谱对吸附机制进行了系统研究。这些互补技术揭示了可逆主客体超分子相互作用的形成，这直接解释了该材料在90次吸附-解吸循环中观察到的优异可逆性。
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