Determining Aluminum Distribution in Zeolite Structures Using Anomalous Diffraction at the Co K-edge
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https://doi.esrf.fr/10.15151/ESRF-ES-2156310957
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资源简介：
The objective of this proposal is to leverage anomalous (resonant) diffraction at the Co K-edge for a comprehensive understanding of the behavior of closely located Al atoms, specifically Al-(SiO2)3-Al sequences, in SSZ-13 zeolite (CHA topology). It has been recognized that these Co-species play a pivotal role in the exceptional catalytic performance of cobalt-exchanged zeolite-type catalysts in hydrocarbon SCR-NOx reactions in the presence of water. This research promises to contribute valuable insights into the fundamental aspects governing the catalytic behavior of Co in zeolites, with potential applications in SCR-NOx reactions, and enables the identification of Co siting as a probe for locating Al-(SiO2)2-Al sequences that stabilize such bi- and tri-valent cationic positions in zeolites.
提供机构：
J. Heyrovsky Institute of Physical Chemistry, Dept of Structure and Dynamics in catalysis, Dolejškova 2155/3, 182 23, Prague 8, CZECH REPUBLIC; Paul Scherrer Institute, Laboratory for Waste Management, PSI CH, Forschungsstrasse 111, 5232, Villigen psi, SWITZERLAND; ETH Zuerich, D-CHAB, Vladimir Prelog weg 1-5/10, Raum E122 Zürich, 8093 Zuerich, Switzerland; ETH Hoenggerberg, Institute for Chemical & Bio-engineering, Swiss Federal Institute of Technology Wolfgang Pauli Strasse 10 HCI Building, 8093 , Zuerich, SWITZERLAND
创建时间：
2028-01-01
