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Pd-Integrated Perovskite as Effective Catalyst for Selective Catalytic Reduction of NOx by Propene

Mondragón Rodríguez, G. C. and Saruhan, B and Petrova, O. and Grünert, W. (2009) Pd-Integrated Perovskite as Effective Catalyst for Selective Catalytic Reduction of NOx by Propene. Topics in Catalysis, pp. 1723-1727. Springer. DOI: 10.1007/s11244-009-9326-x ISSN 1572-9028 (Online)

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Official URL: http://www.springerlink.com/content/h5034047552n6064/

Abstract

Perovskite based Pd catalysts were prepared by a modified citrate route and analyzed with SEM, XRD, TEM and XPS techniques regarding the state of palladium. Integration of Pd into the perovskite lattice was compared with impregnation onto the support. Clear indications of Pd-substitution in the La-based perovskites were found by XPS and SEM. The integrated Pd-ions diffuse out of the perovskite lattice under reductive conditions forming metallic palladium nano-particles (less than 15 nm size) while the Pd particles obtained via the impregnation route were in the order of 80 nm. In the selective catalytic reduction of NO by propene, up to 35% NO conversion at 250 °C were obtained at a very low W/F of 0.015 g s mL−1, with decreasing tendency at increasing oxygen content. Differences between impregnated and Pd-integrated catalysts were obvious only at high O2 content (5 vol.%) where the Pd-integrated catalyst exhibited a lower tendency to oxidize the propene reductant.

Item URL in elib:https://elib.dlr.de/60985/
Document Type:Article
Title:Pd-Integrated Perovskite as Effective Catalyst for Selective Catalytic Reduction of NOx by Propene
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Mondragón Rodríguez, G. C.DLRUNSPECIFIED
Saruhan, BDLRUNSPECIFIED
Petrova, O.RUBUNSPECIFIED
Grünert, W.RUBUNSPECIFIED
Date:9 July 2009
Journal or Publication Title:Topics in Catalysis
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1007/s11244-009-9326-x
Page Range:pp. 1723-1727
Editors:
EditorsEmail
Springer, NetherlandsUNSPECIFIED
Publisher:Springer
ISSN: 1572-9028 (Online)
Status:Published
Keywords:Pd-integrated perovskites - SCR of NO - Propene
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:L VU - Air Traffic and Environment (old)
DLR - Research area:Aeronautics
DLR - Program:L VU - Air Traffic and Environment
DLR - Research theme (Project):L - Low-Emission Air Traffic (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > High Temperature and Functional Coatings
Deposited By: Mondragon Rodriguez, Guillermo Cesar
Deposited On:23 Nov 2009 12:04
Last Modified:31 Jul 2019 19:25

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