Reduction of NOx by H2 on WOx-Promoted Pt/Al2O3/SiO2 Catalysts Under O2-Rich Conditions | Sciact - CRIS-system of Boreskov Institute of Catalysis

Reduction of NOx by H2 on WOx-Promoted Pt/Al2O3/SiO2 Catalysts Under O2-Rich Conditions Full article

Journal

Catalysis Letters
ISSN: 1011-372X , E-ISSN: 1572-879X

Output data

Year: 2022, Volume: 152, Pages: 1598–1610 Pages count : 13 DOI: 10.1007/s10562-021-03747-w

Tags

NOx reduction; H2 reductant; Pt catalyst; Al2O3/SiO2 support; WOx promotor

Authors

Eßer Enno ¹ , Schröder Daniel ¹ , Nartova Anna V. ² , Dmitrachkov Aleksey M. ² , Kureti Sven ¹

Affiliations

1	Chair of Reaction Engineering, Institute of Energy Process Engineering and Chemical Engineering, Technical University of Freiberg, Fuchsmühlenweg 9, 09599 Freiberg, Germany
2	Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation 630090

Funding (1)

Ministry of Science and Higher Education of the Russian Federation

0239-2021-0002

This work addresses the reduction of NOx by H2 under O2-rich conditions using Al2O3/SiO2-supported Pt catalysts with different loads of WOx promotor. The samples were thoroughly characterised by N2 physisorption, temperature-programmed desorption of CO, scanning electron microscopy, X-ray diffraction, laser raman spectroscopy, X-ray photoelectron spectroscopy and diffuse reflectance infrared fourier transform spectroscopy with probe molecule CO. The catalytic studies of the samples without WOx showed pronounced NOx conversion below 200 oC, whereas highest efficiency was related to small Pt particles. The introduction of WOx provided increasing deNOx activity as well as N2 selectivity. This promoting effect was referred to an additional reaction path at the Pt-WOx/Al2O3/SiO2 interface, whereas an electronic activation of Pt by strong metal support interaction was excluded.

Eßer E. , Schröder D. , Nartova A.V. , Dmitrachkov A.M. , Kureti S.
Reduction of NOx by H2 on WOx-Promoted Pt/Al2O3/SiO2 Catalysts Under O2-Rich Conditions
Catalysis Letters. 2022. V.152. P.1598–1610. DOI: 10.1007/s10562-021-03747-w WOS Scopus РИНЦ AN OpenAlex

Submitted:	Apr 12, 2021
Accepted:	Jul 14, 2021
Published online:	Jul 26, 2021
Published print:	Jun 1, 2022

Web of science:	WOS:000677708400002
Scopus:	2-s2.0-85111110698
Elibrary:	46935810
Chemical Abstracts:	2021:1650448
OpenAlex:	W3186064983

DB	Citing
Web of science	6
Scopus	7
Elibrary	2
OpenAlex	8