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Perovskite catalyst (La, Ba)(Fe, Nb, Pd)O3 applicable to NOx storage and reduction system

Paper ID Volume ID Publish Year Pages File Format Full-Text
51828 46855 2009 4 PDF Available
Title
Perovskite catalyst (La, Ba)(Fe, Nb, Pd)O3 applicable to NOx storage and reduction system
Abstract

We have developed a perovskite catalyst, (La0.7Ba0.3)(Fe0.776Nb0.194Pd0.03)O3, applicable to the NOx storage-reduction system. The perovskite catalyst exhibits 47% of NOx conversion rate at 523 K under the 54–6 s alternation of the lean–rich-burning where the lean and rich gases contain 512 ppm NO + 5 vol.% O2 and 512 ppm NO + 4 vol.% CO, respectively. The base perovskite, LaFe0.97Pd0.03O3, was endowed with a NOx adsorbing capability by partially substituting Ba for La in the A-site of ABO3 structure. Partially replacing Fe in the B-site with pentavalent transition metals (Nb, V and Ta) was also required to develop the NOx-reducing ability.

Keywords
Perovskite catalyst; Barium; Niobium; Palladium; Nitrogen oxides; NOx storage-reduction
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 11, Issue 1, 10 October 2009, Pages 34–37
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Don't Miss Today's Special Offer
Price was $35.95
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Full-text PDF Download
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