In Operando Investigation of the Gate Opening Process in Metal Organic Frameworks
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https://doi.esrf.fr/10.15151/ESRF-ES-2104240744
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资源简介：
Metal-organic frameworks (MOFs) are crystalline, modular, and porous materials used in catalysis, gas separation, and storage. Some MOFs exhibit "gate-opening" behavior, where structural changes upon gas exposure allow selective separation via preferential coordination, aiding in the recovery of gases like helium and argon. However, the mechanisms behind gate-opening, such as the initiation site and required gas penetration depth, remain unclear. This proposal aims to use Bragg coherent diffraction imaging (BCDI) to observe these structural changes in real-time. By varying nitrogen gas pressure around the gating threshold, we will visualize the crystal's transformations at each pressure step through diffraction peak reconstructions. This novel approach offers a detailed view of the gate-opening process beyond the reach of traditional techniques, providing insights to optimize MOF design for enhanced gas separation and industrial applications.
提供机构：
Argonne National Laboratory, 9600 South Cass Ave IL, 60439, Argonne, USA; Argonne National Laboratory, 9600 South Cass Ave IL, 60439, Argonne, US; Argonne National Laboratory, Materials Science Division, 9700 S. Cass Ave., 60439, Lemont, US; Argonne National Laboratory, Materials Science Division, 9700 South Cass Avenue, Il, 60439 Argonne, Usa; Argonne National Laboratory, X-Ray Science Division, 9700 S.Cass Avenue, B109, 60439 Lemont, Usa
创建时间：
2028-01-01
