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Low-temperature carbon combustion over proton conductor + electrocatalyst-mixed powders

Paper ID Volume ID Publish Year Pages File Format Full-Text
47161 46462 2010 7 PDF Available
Title
Low-temperature carbon combustion over proton conductor + electrocatalyst-mixed powders
Abstract

Catalytic carbon combustion is a potential approach for eliminating particulate matter emissions from diesel engine vehicles. In this study, we report low-temperature carbon combustion by active oxygen formed at the interface of the mixed powders of a proton conductor (Sn0.9In0.1P2O7) and electrocatalyst (Pt or Mo2C). In a gaseous mixture of H2O and O2, H2O dissociated into protons and electrons at an anodic site of the interface and the resultant active oxygen oxidized carbon to CO2. Separately, O2 reacted with protons and electrons to form H2O at a cathodic site of the interface, resulting in formation of a local electrochemical cell at the proton conductor–electrocatalyst interface, which then self-discharged. This series of reactions could successfully reduce the ignition temperature for carbon to 200 °C for Pt and 300 °C for Mo2C.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch highlightsA mixed catalyst consisting of proton conducting Sn0.9In0.1P2O7 and electrocatalytically active Pt has at least ten times higher turnover frequency for Pt in the commonly used Pt/γ-Al2O3 catalyst.

Keywords
Carbon oxidation; Active oxygen; Proton conductor; Particulate matter
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Low-temperature carbon combustion over proton conductor + electrocatalyst-mixed powders
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 100, Issues 1–2, 11 October 2010, Pages 205–211
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