Methodological Aspects of Producing Aluminosilicalites with Typological Structure of HZSM-5. Rational Design and Catalytic Properties | Sciact - CRIS-system of Boreskov Institute of Catalysis

Methodological Aspects of Producing Aluminosilicalites with Typological Structure of HZSM-5. Rational Design and Catalytic Properties Full article

Journal

Journal of Porous Materials
ISSN: 1380-2224 , E-ISSN: 1573-4854

Output data

Year: 2025, DOI: 10.1007/s10934-025-01840-8

Tags

HZSM-5 · Composition and structure · Transmission electron microscopy · Nitrous oxide catalytic decomposition

Authors

Domoroshchina Elena ¹ , Kuz’micheva Galina ¹ , Vasiliev Alexander ^2,3 , Pavlov Ivan ¹ , Pirutko Larisa ⁴ , Tkachenko Olga ⁵ , Kustov Alexander ^2,5,6

Affiliations

1	MIREA - Russian Technological University (RTU MIREA), Moscow 119454, Russia
2	Lomonosov Moscow State University, Moscow 119991, Russia
3	National Research Center “Kurchatov Institute”, 1 Akademika Kurchatova Pl., Moscow 123182, Russia
4	Boreskov Institute of Catalysis, Siberian Branch, Novosibirsk 630090, Russia
5	Zelinsky Institute of Organic Chemistry, RAS, Moscow 119991, Russia
6	Institute of Ecotechnologies and Engineering, National University of Science and Technology MISiS, Moscow 119071, Russia

Funding (1)

Ministry of Science and Higher Education of the Russian Federation

FWUR-2024-0035

In this work, the analysis and generalization of data on the elemental, phase and surface composition, crystal structure and microstructure of MFI-type HZSM-5 with Si/Al = 12, 25, 40, 300 were presented. Relationships between the composition of zeolite in HZSM-5 samples with different Si/Al and pore volume, specific surface, and framework voids area were established. Data obtained by electron microscopy and energy dispersive X-ray microanalysis explained the discrepancy between HZSM-5 real composition and the initial (as synthesized) one. Samples with the maximum content of Brønsted (HZSM-5 with Si/Al = 25) and Lewis (HZSM-5 with Si/Al = 12) acid sites responsible for the catalytic activity were identified using diffuse reflectance Fourier transform infrared spectroscopy. N2O decomposition reaction rate was found to decrease in the row HZSM-5(25) > HZSM-5(12) > HZSM-5(40) > HZSM-5(40)C > > HZSM-5(300). The high N2O decomposition rate demonstrated by HZSM-5(25) makes it promising catalyst. The second phase of iron oxides, found in all studied HZSM-5 as an impurity of the initial components, and the presence of faceted particles {001} oriented in HZSM-5(25) were shown to contribute to its maximum catalytic activity in N2O decomposition. The applied methodology for studying aluminosilicalites with different silicon to aluminum ratio and the revealed correlations can provide a fundamental perspective in studying other zeolites.

Domoroshchina E. , Kuz’micheva G. , Vasiliev A. , Pavlov I. , Pirutko L. , Tkachenko O. , Kustov A.
Methodological Aspects of Producing Aluminosilicalites with Typological Structure of HZSM-5. Rational Design and Catalytic Properties
Journal of Porous Materials. 2025. DOI: 10.1007/s10934-025-01840-8 WOS Scopus OpenAlex

Submitted:	May 25, 2025
Accepted:	Jul 25, 2025
Published online:	Aug 11, 2025

Web of science:	WOS:001548182700001
Scopus:	2-s2.0-105012970854
OpenAlex:	W4413214967

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