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Total oxidation of CO at ambient temperature using copper manganese oxide catalysts prepared by a redox method

Paper ID Volume ID Publish Year Pages File Format Full-Text
47216 46464 2010 8 PDF Available
Title
Total oxidation of CO at ambient temperature using copper manganese oxide catalysts prepared by a redox method
Abstract

Binary copper manganese oxides were prepared by a novel redox method and their catalytic activity for CO oxidation at ambient temperature evaluated. The catalytic activity was found to be high, and compared favorably with a commercial Hopcalite catalyst. The most active catalyst was able to completely oxidize CO at ambient temperature. Catalytic activity decay, most likely due to carbon dioxide retention was observed. The catalysts were deactivated by moisture but expelling water at moderate temperatures easily restored their catalytic activity. The catalysts were characterized by means of BET, FE-SEM, TEM, EDAX, XPS, TPD and X-ray powder diffraction. The optimum copper loading was determined to be ∼9% of the manganese content.

Graphical abstractCopper manganese oxide catalysts were synthesized using a simple redox method and found to have exceptionally high catalytic activities for CO oxidation. These catalysts also exhibited enhanced resistance to water poisoning. The most active catalyst with a copper loading of ∼9% was able to completely oxidize CO at ambient temperature after 1 h on-stream. The high catalytic activity and enhanced resistance to deactivation by moisture should enable them find applications in respiratory protection systems.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Amorphous manganese oxide; Copper manganese oxides; Hopcalite; Ambient temperature CO oxidation; Water poisoning
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Total oxidation of CO at ambient temperature using copper manganese oxide catalysts prepared by a redox method
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 99, Issues 1–2, 31 August 2010, Pages 103–110
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