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

Paper ID Volume ID Publish Year Pages File Format Full-Text
55567 47057 2012 8 PDF Available
Title
Pd-integrated perovskites for TWC applications: Synthesis, microstructure and N2O-selectivity
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.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (311 K)Download as PowerPoint slideHighlights► Palladium ions were partially dissolved in the lattice of the perovskite LaFe0.65Co0.3Pd0.05O3. ► The perovskite LaFe0.65Co0.3Pd0.05O3 produce considerably less N2O than a commercial TWC. ► No N2O was formed under rich conditions on the LaFe0.65Co0.3Pd0.05O3.

Keywords
Pd-integrated perovskite; TWC; N2O-formation
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Pd-integrated perovskites for TWC applications: Synthesis, microstructure and N2O-selectivity
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 184, Issue 1, 30 April 2012, Pages 184–191
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us