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MnOx supported on carbon nanotubes by different methods for the SCR of NO with NH3

Paper ID Volume ID Publish Year Pages File Format Full-Text
55106 47040 2013 7 PDF Available
Title
MnOx supported on carbon nanotubes by different methods for the SCR of NO with NH3
Abstract

In order to modify the catalytic properties of MnOx via confinement within the channels of carbon nanotubes (CNTs), a series of MnOx catalysts supported by CNTs were prepared by different methods, in which MnOx was introduced on the outside surface only or on the inside and outside surface of CNTs. The catalysts showed different activity in SCR of NOx with NH3 in the temperature range of 80–300 °C. The catalyst in which some MnOx was introduced into CNT channels exhibited higher NOx conversion than that in which all the MnOx was on the outside surface of CNTs. From the result of the activity test, it was indicated that the internal diffusion of molecules may not be the key influencing factor on the catalytic activity when the particle diameter was very smaller comparing with the tubes. In addition, the result of characterization showed that MnOx confined in the channels had better abilities of supplying oxygen and adsorbing NO which played an important role in the NH3-SCR, and it can partially be attributed to the electronic interaction between MnOx and the inner surface of nanotubes.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (411 K)Download as PowerPoint slideHighlights► Modify the catalytic properties of manganese oxides via confinement within the channels of carbon nanotubes. ► The catalyst in which parts of MnOx were introduced into CNT channels displayed higher NOx conversion than that in which all the MnOx were on the outside surface of CNTs. ► MnOx confined in the channels had better ability of applying oxygen and adsorbing NO molecules.

Keywords
Carbon nanotubes; Manganese oxides; Selective catalytic reduction; Nitric oxide; Ammonia
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MnOx supported on carbon nanotubes by different methods for the SCR of NO with NH3
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 201, 1 March 2013, Pages 115–121
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