Previous Article in Journal
Efficient Synthesis of Tetrasubstituted Furans via Lipase-Catalyzed One-Pot Sequential Multicomponent Reaction
 
 
Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
Journals
Catalysts
Volume 15
Issue 5
10.3390/catal15050483
catalysts-logo
Submit to this Journal Review for this Journal Propose a Special Issue
► Article Menu

Article Menu

share Share announcement Help format_quote Cite question_answer Discuss in SciProfiles
first_page
settings
Order Article Reprints
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Selective Catalytic Reduction of NO with H2 over Pt/Pd-Containing Catalysts on Silica-Based Supports

by
Magdalena Jabłońska
1,*,
Adrián Osorio Hernández
1,
Jürgen Dornseiffer
2,
Jacek Grams
3,
Anqi Guo
4,
Ulrich Simon
4 and
Roger Gläser
1
1
Institute of Chemical Technology, Universität Leipzig, Linnéstr. 3, 04103 Leipzig, Germany
2
Institute of Energy Materials and Devices, Materials Synthesis and Processing (IMD-2), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
3
Institute of General and Ecological Chemistry, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924, Lodz, Poland
4
Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1a, 52074 Aachen, Germany
*
Author to whom correspondence should be addressed.
Catalysts 2025, 15(5), 483; https://doi.org/10.3390/catal15050483
Submission received: 17 April 2025 / Revised: 12 May 2025 / Accepted: 14 May 2025 / Published: 15 May 2025
(This article belongs to the Topic Advanced Materials in Chemical Engineering)
Versions Notes

Abstract

Platinum- and/or palladium-containing silica-based supports were applied for the selective catalytic reduction of NOx with hydrogen (H2-SCR-DeNOx). To obtain enhanced activity and N2 selectivity below 150 °C, we varied the type and loading of noble metals (Pt and Pd both individually and paired, 0.1–1.0 wt.-%), silica-containing supports (ZrO2/SiO2, ZrO2/SiO2/Al2O3, Al2O3/SiO2/TiO2), as well as the H2 concentration in the feed (2000–4000 ppm). All of these contributed to enhancing N2 selectivity during H2-SCR-DeNOx over the (0.5 wt.-%)Pt/Pd/ZrO2/SiO2 catalyst in the presence of 10 vol.-% of O2. H2 was completely consumed at 150 °C. A comparison of the catalytic results obtained during H2-SCR-DeNOx,(H2-)NH3-SCR-DeNOx, as well as stop-flow H2-SCR-DeNOxand temperature-programmed studies, revealed that in the temperature range between 150 and 250 °C, the continuously coupled or overlaying mechanism of NO reduction by hydrogen and ammonia based on NH3 formation at lower temperatures, which is temporarily stored at the acid sites of the support and desorbed in this temperature range, could be postulated.
Keywords: noble metals; Pt–Pd; hydrogen; H2-SCR-DeNOx; reaction mechanism noble metals; Pt–Pd; hydrogen; H2-SCR-DeNOx; reaction mechanism

Share and Cite

MDPI and ACS Style

Jabłońska, M.; Osorio Hernández, A.; Dornseiffer, J.; Grams, J.; Guo, A.; Simon, U.; Gläser, R. Selective Catalytic Reduction of NO with H2 over Pt/Pd-Containing Catalysts on Silica-Based Supports. Catalysts 2025, 15, 483. https://doi.org/10.3390/catal15050483

AMA Style

Jabłońska M, Osorio Hernández A, Dornseiffer J, Grams J, Guo A, Simon U, Gläser R. Selective Catalytic Reduction of NO with H2 over Pt/Pd-Containing Catalysts on Silica-Based Supports. Catalysts. 2025; 15(5):483. https://doi.org/10.3390/catal15050483

Chicago/Turabian Style

Jabłońska, Magdalena, Adrián Osorio Hernández, Jürgen Dornseiffer, Jacek Grams, Anqi Guo, Ulrich Simon, and Roger Gläser. 2025. "Selective Catalytic Reduction of NO with H2 over Pt/Pd-Containing Catalysts on Silica-Based Supports" Catalysts 15, no. 5: 483. https://doi.org/10.3390/catal15050483

APA Style

Jabłońska, M., Osorio Hernández, A., Dornseiffer, J., Grams, J., Guo, A., Simon, U., & Gläser, R. (2025). Selective Catalytic Reduction of NO with H2 over Pt/Pd-Containing Catalysts on Silica-Based Supports. Catalysts, 15(5), 483. https://doi.org/10.3390/catal15050483

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Metrics

Article metric data becomes available approximately 24 hours after publication online.
Back to TopTop