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Highly efficient oxidation of soot over RuOx/SiO2 in fluidized bed reactor

Paper ID Volume ID Publish Year Pages File Format Full-Text
50503 46797 2013 5 PDF Available
Title
Highly efficient oxidation of soot over RuOx/SiO2 in fluidized bed reactor
Abstract

•RuOx/SiO2 showed the highest activity for soot oxidation in fluidized bed reactor.•The adsorbed NO on RuOx was easily dissociated to adsorbed N and O. The adsorbed O could further oxidize soot.•NOx decomposition was inhibited by the consumption of adsorbed NO and NO2 in soot oxidation.•High activity in fluidized bed was due to its high mass transferring of active species.

The potentialities of RuOx/SiO2 for soot oxidation have been investigated using a temperature programmed reaction technique. Among the noble metal catalysts, RuOx/SiO2 exhibited the highest activities in fluidized bed reactor. The temperature at 50% soot conversion over RuOx/SiO2 in the presence of NO and O2 is about 120 K lower than that only in the presence of O2. It has been identified that NO was adsorbed on the surface of RuOx in the presence of O2. The adsorbed NO was highly active for oxidizing soot, which can be attributed to the high mass transferring of the active species in the reaction systems. The mechanism of NO dissociation is also discussed in soot oxidation.

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Keywords
Soot oxidation; Ruthenium; Noble metal catalysts; Fluidized bed reactor; Fixed bed reactor; Nitrogen oxides
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Highly efficient oxidation of soot over RuOx/SiO2 in fluidized bed reactor
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 38, 5 August 2013, Pages 40–44
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