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Local structure of Cu(I) ions in the MOR zeolite: a DFT-assisted XAS study
Radiation Physics and Chemistry ( IF 2.8 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.radphyschem.2018.12.031
C. Buono , A. Martini , I.A. Pankin , D.K. Pappas , C. Negri , K. Kvande , K.A. Lomachenko , E. Borfecchia

Abstract We combine in situ XAS and DFT to determine the local structure of Cu(I) ions in the Cu-exchanged mordenite (MOR) zeolite, one of the most promising materials for the selective oxidation of methane to methanol. Data analysis points to a quasi-linear coordination geometry in the MOR side pocket and suggests that ca. 20% of the Cu-ions exist as coupled di-copper(I) species, paving the way for more detailed structural refinements.

中文翻译:

MOR 沸石中 Cu(I) 离子的局部结构:DFT 辅助 XAS 研究

摘要 我们结合原位 XAS 和 DFT 来确定 Cu 交换丝光沸石 (MOR) 沸石中 Cu(I) 离子的局部结构,MOR 沸石是将甲烷选择性氧化成甲醇的最有前途的材料之一。数据分析指向 MOR 侧袋中的准线性坐标几何,并表明大约 20% 的 Cu 离子以耦合的二铜 (I) 物种形式存在,为更详细的结构改进铺平了道路。
更新日期:2020-10-01
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