钾交换和部分脱水纳米Y沸石†中阳离子定位的三维能谱分析

IF 2.6 3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

CrystEngComm Pub Date : 2025-07-10 DOI:10.1039/D5CE00520E

Yacine Malik Chaib Draa, Taylan Örs, Irena Deroche, Catherine Dejoie and Jean-Louis Paillaud

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引用次数: 0

摘要

沸石是微孔铝硅酸盐晶体，在催化和吸附中起着至关重要的作用。阳离子定位强烈影响其性质，但由于常规衍射技术的限制，难以确定纳米沸石中的阳离子定位。本研究采用进动电子衍射层析（PEDT）技术对合成纳米faujasite中的K+阳离子进行了定位。尽管晶体尺寸很小，但应用动力学理论可以实现精确的纳米级表征。实验结果与蒙特卡罗模拟结果进行了比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

3D ED for the localization of cations in potassium exchanged and partially dehydrated nano Y zeolite†

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3D ED for the localization of cations in potassium exchanged and partially dehydrated nano Y zeolite†

Zeolites, microporous crystalline aluminosilicates, play a vital role in catalysis and adsorption. Cation positioning strongly affects their properties but is difficult to determine in nano-zeolites due to limitations of conventional diffraction techniques. In this study, precession electron diffraction tomography (PEDT) was used to localize K⁺ cations in synthetic nano-faujasite. Applying dynamical theory enabled accurate nanoscale characterization despite small crystal size. The experimental results were successfully compared with distributions from Monte Carlo simulations.

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