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The enhanced performance of ceria with surface sulfation for selective catalytic reduction of NO by NH3

Paper ID Volume ID Publish Year Pages File Format Full-Text
50832 46817 2010 4 PDF Available
Title
The enhanced performance of ceria with surface sulfation for selective catalytic reduction of NO by NH3
Abstract

The selective catalytic reduction (SCR) of NO with NH3 over fresh and sulfated CeO2 catalysts had been investigated in this study. Experimental results showed that the sulfated CeO2 sample had significantly higher NO conversion than the fresh one and revealed an excellent selectivity to N2 within the temperature range of 200–570 °C. By characterizations via BET, XRD, XPS, EDS and TPD, it was concluded that the improvement in SCR activity by sulfation might be originated from the increase of active oxygen species and the enhancement of NH3 chemisorption after surface sulfation, both of which were conducive to NH3 activation.

Graphical AbstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch Highlights► Sulfation of ceria had greatly improved SCR activity. ►Sulfation had induced an increase in active oxygen species. ► Sulfation had led to the enhancement of NH3 chemisorptions. ► Sulfation may give a new thought for SCR catalyst preparation.

Keywords
SCR; Surface sulfation; CeO2; NO; NH3
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The enhanced performance of ceria with surface sulfation for selective catalytic reduction of NO by NH3
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 12, Issue 4, 15 December 2010, Pages 310–313
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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