Formation of Ag-Fe Bimetallic Nano-Species on Mordenite Depending on the Initial Ratio of Components | Sciact - CRIS-system of Boreskov Institute of Catalysis

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

Journal

Materials
ISSN: 1996-1944

Output data

Year: 2023, Volume: 16, Number: 8, Article number : 3026, Pages count : 17 DOI: 10.3390/ma16083026

Tags

mordenite; silver; iron; ion exchange; Ag/Fe ratio

Authors

Kotolevich Yulia ¹ , Khramov Evgenii ² , Sánchez-López Perla ¹ , Pestryakov Alexey ³ , Zubavichus Yan V. ⁴ , Antúnez-García Joel ¹ , Petranovskii Vitalii ¹

Affiliations

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.

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.

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 AN PMID OpenAlex publication_identifier_short.sciact_skif_identifier_type

Submitted:	Mar 7, 2023
Accepted:	Apr 6, 2023
Published print:	Apr 11, 2023
Published online:	Apr 11, 2023

Web of science:	WOS:000977215600001
Scopus:	2-s2.0-85156092194
Chemical Abstracts:	2023:893494
PMID:	37109861
OpenAlex:	W4367320798
publication_identifier.sciact_skif_identifier_type:	576

DB	Citing
OpenAlex	3
Web of science	2
Scopus	2