fulltext.study @t Gmail

NH3-SCR performance improvement of mesoporous Sn modified Cr-MnOx catalysts at low temperatures

Paper ID Volume ID Publish Year Pages File Format Full-Text
53892 46988 2015 9 PDF Available
Title
NH3-SCR performance improvement of mesoporous Sn modified Cr-MnOx catalysts at low temperatures
Abstract

•We synthesized the highly ordered mesoporous Sn/Cr-MnOx by the “nanocasting” method.•The mesoporous materials exhibit a high low temperature SCR catalytic performance.•The addition of Sn improved the sulfur resistance.

A series of mesoporous Sn/Cr-MnOx nanomarerials with highly ordered three-dimensional channels were successfully prepared by the “nanocasting” method, which were used as selective catalytic reduction (SCR) catalysts to remove NOx with NH3 in a low-temperature range (150–300 °C). All of the mesoporous catalysts exhibited highly ordered mesoporous structure and high surface areas, and the SnOx nanoparticles were well dispersed in the mesoporous channels. Among all the Sn/Cr-MnOx samples, the 0.16-Sn/Cr (0.1)-MnO2 sample showed the best activity, giving the near 100% NOx conversion at 150–250 °C. From the XPS results, it can be found that doped Sn element significantly increased the proportion of Cr3+/Cr2+ and Mn3+/Mn4+ that may improve the N2 selectivity. Moreover, higher content of adsorbed oxygen and improved surface reducibility were also observed. In addition, Sn modified catalysts showed excellent SO2 resistance.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (73 K)Download as PowerPoint slide

Keywords
Mesoporous; NO reduction; Cr-Mn; Low temperature
First Page Preview
NH3-SCR performance improvement of mesoporous Sn modified Cr-MnOx catalysts at low temperatures
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
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 258, Part 1, 1 December 2015, Pages 103–111
Authors
, , , , ,
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