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Formation of Ag-Fe Bimetallic Nano-Species on Mordenite Depending on the Initial Ratio of Components Научная публикация

Журнал Materials
ISSN: 1996-1944
Вых. Данные Год: 2023, Том: 16, Номер: 8, Номер статьи : 3026, Страниц : 17 DOI: 10.3390/ma16083026
Ключевые слова mordenite; silver; iron; ion exchange; Ag/Fe ratio
Авторы Kotolevich Yulia 1 , Khramov Evgenii 2 , Sánchez-López Perla 1 , Pestryakov Alexey 3 , Zubavichus Yan V. 4 , Antúnez-García Joel 1 , Petranovskii Vitalii 1
Организации
1 Centro de Nanociencias y Nanotecnología, Department of Nanocatalysis, Universidad Nacional Autónoma de México, Ensenada 22860, Mexico.
2 Kurchatov Complex for Synchrotron and Neutron Studies, National Research Center "Kurchatov Institute", Moscow 123182, Russia.
3 Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, Tomsk 634050, Russia
4 Synchrotron Radiation Facility SKIF, Boreskov Institute of Catalysis SB RAS, Koltsovo 630559, Russia.

Реферат: The formation and properties of silver and iron nanoscale components in the Ag-Fe bimetallic system deposited on mordenite depend on several parameters during their preparation. Previously, it was shown that an important condition for optimizing nano-center properties in a bimetallic catalyst is to change the order of sequential deposition of components; the order “first Ag+, then Fe2+” was chosen as optimal. In this work, the influence of exact Ag/Fe atomic proportion on the system’s physicochemical properties was studied. This ratio has been confirmed to affect the stoichiometry of the reduction–oxidation processes involving Ag+ and Fe2+, as shown by XRD, DR UV-Vis, XPS, and XAFS data, while HRTEM, SBET and TPD-NH3 show little change. However, it was found the correlation between the occurrence and amount of the Fe3+ ions incorporated into the zeolite’s framework and the experimentally determined catalytic activities towards the model de-NOx reaction along the series of nanomaterials elucidated in this present paper.
Библиографическая ссылка: Kotolevich Y. , Khramov E. , Sánchez-López P. , Pestryakov A. , Zubavichus Y.V. , Antúnez-García J. , Petranovskii V.
Formation of Ag-Fe Bimetallic Nano-Species on Mordenite Depending on the Initial Ratio of Components
Materials. 2023. V.16. N8. 3026 :1-17. DOI: 10.3390/ma16083026 WOS Scopus CAPlus PMID OpenAlex СКИФ ID
Даты:
Поступила в редакцию: 7 мар. 2023 г.
Принята к публикации: 6 апр. 2023 г.
Опубликована в печати: 11 апр. 2023 г.
Опубликована online: 11 апр. 2023 г.
Идентификаторы БД:
Web of science: WOS:000977215600001
Scopus: 2-s2.0-85156092194
Chemical Abstracts: 2023:893494
PMID (PubMed): 37109861
OpenAlex: W4367320798
СКИФ ID: 576
Цитирование в БД:
БД Цитирований
OpenAlex 3
Web of science 2
Scopus 2
Альметрики: