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Reversible Transformations of Palladium–Indium Intermetallic Nanoparticles upon Repetitive Redox Treatments in H2/O2статья
Дата последнего поиска статьи во внешних источниках: 10 июля 2024 г.
- Авторы: Bukhtiyarov Andrey V., Panafidin Maxim A., Prosvirin Igor P., Smirnova Nadezhda S., Markov Pavel V., Baeva Galina N., Mashkovsky Igor S., Bragina Galina O., Vinokurov Zakhar S., Zubavichus Yan V., Bukhtiyarov Valerii I., Stakheev Alexander Yu
- Журнал: Crystals
- Том: 13
- Номер: 9
- Год издания: 2023
- Издательство: MDPI
- Местоположение издательства: Basel, Switzerland
- Номер статьи: 1356
- DOI: 10.3390/cryst13091356
- Аннотация: The transformations of chemical states and structures occurring in the PdIn/Al2O3 catalyst upon redox treatments in different gaseous atmospheres at different temperatures are addressed by an assortment of in situ bulk- (XRD) and surface-sensitive (XPS and DRIFTS CO) techniques. Any desired state of the catalyst between two opposite extremes of highly dispersed oxide species and regularly ordered PdIn intermetallic compound could be set in fully controlled and reversible ways by selecting appropriate conditions for the reductive treatment starting from the fully oxidized state. Since mutual conversions of multi-atomic Pdn centers into single-site Pd1 centers are involved in these transformations, the methodology could be used to find an optimum balance between the activity and selectivity of the catalytic system.
- Добавил в систему: Стахеев Александр Юрьевич