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Dual-catalyst aftertreatment of lean-burn natural gas engine exhaust

Paper ID Volume ID Publish Year Pages File Format Full-Text
48758 46521 2007 10 PDF Available
Title
Dual-catalyst aftertreatment of lean-burn natural gas engine exhaust
Abstract

A dual-catalyst system for the reduction of NO with CH4 under lean conditions was investigated. The system is comprised of a mixed bed containing a Co/ZrO2 catalyst, active for the oxidation of NO to NO2, and a Pd/sulfated zirconia (SZ) catalyst that is active for the reduction of NO2 with CH4. Such a system is capable of taking advantage of higher reduction rates for NO2, as compared to NO, that have been previously observed. When simulated exhaust streams from lean-burn natural gas engines are used as feed, the dual-catalyst system is simultaneously active for the reduction of NOx and the oxidation of unburned hydrocarbons and CO.

Keywords
NOx reduction; Hydrocarbon oxidation; Cobalt; Palladium; ZrO2; Lean-burn; Natural gas; Sulfated zirconia
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 74, Issues 1–2, 18 June 2007, Pages 73–82
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
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