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Pd-integrated perovskites for TWC applications: Synthesis, microstructure and N2O-selectivity

Mondragón Rodríguez, G.C. and Kelm, K. and Heikens, S. and Grünert, W. and Saruhan, Bilge (2012) Pd-integrated perovskites for TWC applications: Synthesis, microstructure and N2O-selectivity. Catalysis Today, pp. 184-191. Elsevier. DOI: 10.1016/j.cattod.2011.12.026

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Abstract

Two versions of Pd-doped perovskite based catalysts (Pd impregnated onto or integrated into perovskite: Pd-LaFe0.65Co0.35O3 and LaFe0.65Co0.3Pd0.05O3) were synthesized by applying a modified citrate route and analyzed by XRD, TEM and XPS. The catalytic properties of the perovskites were measured for NO reduction reactions occurring in three way catalysis, including lean, stoichiometric and rich conditions. The N2O concentrations were measured and compared to the N2O formation of a commercial three way catalyst. The perovskite-based catalysts produced significantly less N2O than the TWC – ca. 75 % under lean conditions at the temperatures of maximum N2O-formation and ca. 60 % less N2O under stoichiometric conditions. Under rich conditions the Pd-LaFe0.65Co0.35O3 catalyst produced ca. 58 % less N2O than the TWC, while no N2O was detected at all on the Pd-integrated perovskite LaFe0.65Co0.3Pd0.05O3 under these conditions.

Item URL in elib:https://elib.dlr.de/76685/
Document Type:Article
Title:Pd-integrated perovskites for TWC applications: Synthesis, microstructure and N2O-selectivity
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Mondragón Rodríguez, G.C.guillermo.mondragon-rodriguez (at) dlr.deUNSPECIFIED
Kelm, K.klemens.kelm (at) dlr.deUNSPECIFIED
Heikens, S.saschah (at) techem.ruhr-uni-bochum.deUNSPECIFIED
Grünert, W.w.gruenert (at) techem.rub.deUNSPECIFIED
Saruhan, BilgeBilge.Saruhan (at) dlr.deUNSPECIFIED
Date:2012
Journal or Publication Title:Catalysis Today
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1016/j.cattod.2011.12.026
Page Range:pp. 184-191
Publisher:Elsevier
Status:Published
Keywords:Pd-integrated perovskite, TWC, N2O-formation
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Propulsion Systems (old)
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Turbine Technologies (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > High Temperature and Functional Coatings
Deposited By: Mondragon Rodriguez, Guillermo Cesar
Deposited On:26 Jul 2012 13:07
Last Modified:06 Sep 2019 15:16

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