fulltext.study @t Gmail

Ageing and SO2 resistance of Pd containing perovskite-type oxides

Paper ID Volume ID Publish Year Pages File Format Full-Text
48104 46493 2009 9 PDF Available
Title
Ageing and SO2 resistance of Pd containing perovskite-type oxides
Abstract

The La0.91Mn0.85Ce0.24Pd0.05Oz and La1.034Mn0.966Pd0.05Oz perovskite-type oxides were prepared via a combination of the sol–gel and the combustion synthesis methods. They were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, energy dispersive X-ray, high resolution transmission electron microscopy and electron energy loss spectroscopy. The effect of ageing and SO2 on the catalytic effectiveness of the Pd/perovskite and of a Pd-based commercial three-way catalyst for stoichiometrically operating natural gas fuelled vehicles were investigated. The La1.034Mn0.966Pd0.05Oz catalyst exhibited the highest thermal stability and, in contrast to the La0.91Mn0.85Ce0.24Pd0.05Oz and the commercial catalyst, it appeared significantly activated in the presence of 8 ppm SO2 in the reactant mixture. The formation of La–Pd mixed oxides or/and La2(Mn–Pd)O6, the enhanced surface Pd2+ composition and the low surface sulfur content were suggested as the possible reasons for the activation under sulfur environment.

Keywords
Pd catalysts; Pd–perovskites; Natural gas vehicles; Ageing; SO2 poisoning
First Page Preview
Ageing and SO2 resistance of Pd containing perovskite-type oxides
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
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 87, Issues 1–2, 16 March 2009, Pages 9–17
Authors
, , , ,
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