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Non-thermal plasma-assisted catalytic NOx storage over Pt/Ba/Al2O3 at low temperatures

Paper ID Volume ID Publish Year Pages File Format Full-Text
47641 46479 2009 8 PDF Available
Title
Non-thermal plasma-assisted catalytic NOx storage over Pt/Ba/Al2O3 at low temperatures
Abstract

NOx storage performances have been investigated on a Pt/Ba/Al2O3 catalyst by comparison using two types of non-thermal plasma (NTP) reactor: the “PDC system” reactor and the “PFC system” reactor. In the PDC system, the catalyst was placed in the discharge space and was activated by the plasma directly, whereas in the PFC system, the plasma reactor was followed by the catalyst. The results showed that the NOx storage capacity (NSC) of the Pt/Ba/Al2O3 catalyst was significantly enhanced by the non-thermal plasma in the PDC and PFC system, and the PDC system exhibited better promotional effect than the PFC system in the temperature range of 100–300 °C. The NSC of the catalyst was increased with the increase of the input energy density both in the PDC and PFC system due to the higher NO oxidation at higher input energy density. It was also found that the ionic wind induced by plasma in the PDC system enhanced the quantity of the NO adsorbed onto the catalyst surface and therefore could react with the O-radical to form more NO2, and thus promote the formation of nitrate on the catalyst.

Keywords
Nitric oxide; NSR; Lean NOx trap; Non-thermal plasma; Dielectric barrier discharge; Pt/Ba/Al2O3; Adsorption; Oxidation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 90, Issues 3–4, 17 August 2009, Pages 360–367
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