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Selective catalytic reduction of NOx by C2H5OH over Ag/Al2O3/cordierite: Effect of the surface concentration of silver

Paper ID Volume ID Publish Year Pages File Format Full-Text
55274 47046 2012 4 PDF Available
Title
Selective catalytic reduction of NOx by C2H5OH over Ag/Al2O3/cordierite: Effect of the surface concentration of silver
Abstract

The present paper studies effect of silver and alumina loadings on the catalytic activity of Ag/Al2O3/cordierite for the selective reduction of NO by ethanol. It is shown that activity of the silver–alumina catalysts depends not only on the loading of components, but also on the surface concentration of silver. High conversion of NO, around 100%, is achieved when the surface concentration of silver is equal to 0.09–0.13 mg/m2. The Ag/Al2O3/cordierite catalyst, as shown by UV–visible diffuse reflectance spectroscopy, under such surface concentration contains silver mainly in the oxidized state (Ag+ cations and Agnδ+ clusters). It is also shown that activity of the structured catalysts with equal silver loading enhances with increasing alumina loading from 18 to 48 wt.%.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (358 K)Download as PowerPoint slideHighlights► Catalysts for the selective catalytic reduction of NOx by ethanol. ► Effect of components loadings on the catalytic activity of Ag/Al2O3/cordierite. ► Activity of the catalysts depends on the surface concentration of silver. ► Productivity is maximal when the surface concentration of Ag is 0.09–0.13 mg/m2.

Keywords
Selective catalytic reduction (SCR) of NOx; Cordierite supported silver–alumina catalyst; Ethanol (C2H5OH)
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Selective catalytic reduction of NOx by C2H5OH over Ag/Al2O3/cordierite: Effect of the surface concentration of silver
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 191, Issue 1, 15 September 2012, Pages 38–41
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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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