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Hydrogen-reduced Cu/ZnO composite as efficient reusable catalyst for diesel particulate matter oxidation

Paper ID Volume ID Publish Year Pages File Format Full-Text
45587 46416 2015 11 PDF Available
Title
Hydrogen-reduced Cu/ZnO composite as efficient reusable catalyst for diesel particulate matter oxidation
Abstract

•Hydrogen reduced Cu/ZnO composite (5%Cu) manifested a strong diesel particulate matter oxidation activity at 150 °C.•Cu1+ at the catalyst surface was found to be responsible for the high catalytic activity.•High stability of Cu1+ is assigned to the isoelectronic interactions of Cu1+ with Zn2+.•The catalyst can be used even from the starting moment of the diesel engines.

Hydrogen-reduced copper-loaded ZnO (Cu/ZnO) showed a strong diesel particulate matter oxidation activity at temperature as low as 150 °C. Cu/ZnO catalyst with 5% nominal Cu content was tested for the oxidation of diesel particulate matter under air flow between 25 and 800 °C. The high catalytic performance of reduced 5%Cu/ZnO even after its use in diesel particulate matter oxidation has been assigned to the presence of Cu1+ ions at its surface, determined by Auger electronic spectroscopy. The high stability of Cu1+ could be assigned to the isoelectronic interaction of Cu1+ (3d10) with Zn2+ (3d10) at the Cu2O–ZnO interface. Results presented in this work indicate that the composite catalyst can be considered as part of an exhaust catalytic system, for abating diesel particulate matter emission at low temperature.

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Keywords
Cu/ZnO composite catalyst; Diesel particulate matter oxidation; Cu1+; Cold engine diesel emissions
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Hydrogen-reduced Cu/ZnO composite as efficient reusable catalyst for diesel particulate matter oxidation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 165, April 2015, Pages 555–565
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