Adsorption of nitric oxide in metal-organic frameworks: Low temperature IR and EPR spectroscopic evaluation of the role of open metal sites
Adsorption of nitric oxide in metal-organic frameworks: Low temperature IR and EPR spectroscopic evaluation of the role of open metal sites
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DOI：
10.1016/j.micromeso.2015.02.020
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发表时间：
2015-11-01
影响因子：
5.2
通讯作者：
Hartmann, Martin
中科院分区：
文献类型：
--
作者：
Barth, Benjamin;Mendt, Matthias;Hartmann, Martin
用低温ESR和IR研究了金属-有机骨架材料M-MIL-100(M=Al，Fe)和M-CPO-27(M=Co，Ni)对一氧化氮的吸附。暴露在CPO-27中先前脱溶的Ni(II)和Co(II)位导致形成稳定到393K的金属亚硝基络合物。在Fe-MIL-100型材料中的铁金属中心与一氧化氮分子之间形成了较弱的键。低温下的原位漂移和EPR谱表明，在Al-MIL-100和Al/Cr-MIL-53中，Co-、Ni-和Fe-NO加合物的形成明显，而Al-MIL-100和Al/Cr-MIL-53中没有特别强的相互作用。(C)爱思唯尔公司出版的2015年。
The metal-organic framework materials M-MIL-100 (M = Al, Fe) and M-CPO-27 (M = Co, Ni) have been studied with respect to the adsorption of nitric oxide employing low-temperature ESR and IR spectroscopy. Exposure of the previously desolvated Ni (II) and Co (II) sites in CPO-27 leads to the formation of metal nitrosyl complexes that are stable up to temperatures of 393 K. A weaker bond is formed between the iron metal centers in the Fe-MIL-100 type materials and the nitric oxide molecule. Using in-situ DRIFT and EPR spectroscopy at low temperatures, the formation of Co-, Ni- and Fe-NO adducts is evident from the respective spectra, while specifically strong interactions are absent in Al-MIL-100 and Al/Cr-Mil-53. (C) 2015 Published by Elsevier Inc.