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Catalytic reduction of NO by NH3 over Fe–Cu–OX/CNTs-TiO2 composites at low temperature

Paper ID Volume ID Publish Year Pages File Format Full-Text
40953 45872 2012 6 PDF Available
Title
Catalytic reduction of NO by NH3 over Fe–Cu–OX/CNTs-TiO2 composites at low temperature
Abstract

Activity of iron–copper oxides supported on TiO2 and carbon nanotubes (CNTs) for low-temperature selective catalytic reduction of NO by NH3 in the presence of oxygen was investigated. The addition of FeOX and CNTs synergistically promoted the NO conversion through the adsorption of NO and NH3 and the catalytic oxidation of NO to NO2. NO2 adsorbed on the surface of the catalysts was found to be essential for NO reduction at low temperature, and approximately 90% NO conversion could be achieved at reaction temperature as low as 150 °C. Moreover, it was found that the deactivation caused by H2O could be recovered after H2O was switched off, while the deactivation caused by SO2 was dependent on the reaction temperature.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (217 K)Download as PowerPoint slideHighlights► Fe–Cu–OX/TiO2-CNTs composites were prepared by a sol–gel method. ► A NOX conversion of 90% was achieved at 150–300 °C. ► The additions of FeOX and CNTs synergistically promote the NOX conversion. ► Adsorbed NO2 on the surface is important for NOX reduction at low temperature. ► The reactions follow both the L–H and E–R mechanism.

Keywords
Selective catalytic reduction; Carbon nanotubes; Iron–copper oxides; NO oxidation
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Catalytic reduction of NO by NH3 over Fe–Cu–OX/CNTs-TiO2 composites at low temperature
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 427–428, 15 June 2012, Pages 43–48
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