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

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

Detaylı Bibliyografya
Parent link:Materials
Vol. 16, iss. 8.— 2023.— [3026, 17 p.]
Müşterek Yazar: Национальный исследовательский Томский политехнический университет Исследовательская школа химических и биомедицинских технологий
Diğer Yazarlar: Kotolevich Yu. Yulia, Khramov E. Evgeny, Sanchez-Lopez P. Perla, Pestryakov A. N. Aleksey Nikolaevich, Zubavichus Ya. Yan, Antunez-Garcia J. Joel, Petranovskii V. Vitalii
Özet:Title screen
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.
Baskı/Yayın Bilgisi: 2023
Konular:
электронный ресурс
труды учёных ТПУ
mordenite
silver
iron
ion exchange
Ag/Fe ratio
мордениты
серебро
железо
ионный обмен
Online Erişim:https://doi.org/10.3390/ma16083026
Materyal Türü: Elektronik Kitap Bölümü
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=669456

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