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NOx storage-reduction over combined catalyst Mn/Ba/Al2O3–Pt/Ba/Al2O3

Paper ID Volume ID Publish Year Pages File Format Full-Text
52214 46867 2008 5 PDF Available
Title
NOx storage-reduction over combined catalyst Mn/Ba/Al2O3–Pt/Ba/Al2O3
Abstract

Mn/Ba/Al2O3, Pt/Ba/Al2O3 and their combined catalyst for NOx storage-reduction by propylene were investigated. The results showed that Mn/Ba/Al2O3 exhibited good catalytic activity for NO oxidation-storage under lean burn condition. When Pt/Ba/Al2O3 was mixed with Mn/Ba/Al2O3 in equal weight proportion, the NOx conversion between 250 °C and 500 °C under the dynamic lean-rich burn conditions increased, and the maximum NOx conversion increased from 82.0% to 90.8% at 400 °C. The combined catalyst showed higher catalytic activity and better stability in the presence of 25 ppm SO2 in comparison to Pt/Ba/Al2O3. XRD and XPS characterizations of Mn/Ba/Al2O3 indicated that MnO2 and Mn2O3 disperse on the surface, while BaMnO3 exits in bulk phase.

Keywords
NOx storage-reduction; Lean burn; Pt/Ba/Al2O3; Mn/Ba/Al2O3; Combined catalyst
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NOx storage-reduction over combined catalyst Mn/Ba/Al2O3–Pt/Ba/Al2O3
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 9, Issue 5, 20 March 2008, Pages 563–567
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
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Price after discount Only $4.95
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Full-text PDF Download
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Any Questions? feel free to contact us