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NO oxidation over nitrogen doped carbon xerogels

Paper ID Volume ID Publish Year Pages File Format Full-Text
46092 46429 2012 11 PDF Available
Title
NO oxidation over nitrogen doped carbon xerogels
Abstract

Carbon xerogels were prepared from a nitrogen-containing polymer precursor, using melamine and urea as nitrogen sources incorporated into the polymer matrix, by the sol–gel process. Materials with different contents of nitrogen were obtained and used as catalysts for NO oxidation at room temperature. The NO conversions obtained with nitrogen doped carbon xerogels were quite high, showing that carbon xerogels are efficient catalysts for NO oxidation. A maximum of 88% conversion for NO was obtained at NO initial concentration of 1000 ppm and 20% of O2. The presence of nitrogen-containing surface groups was shown to favour the oxidation of NO to NO2. The catalytic activity of the catalysts is maintained in consecutive runs.

Graphical abstractThe presence of pyridine (N6) and pyrrole (N5) groups in N-doped carbon xerogels favours the oxidation of NO.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Nitrogen-doped carbon xerogels were prepared using melamine and urea. ► The materials performed well as catalysts for NO oxidation at room temperature. ► The catalytic activity of the catalysts was maintained in consecutive runs. ► The presence of pyridine and pyrrole groups favours the oxidation of NO. ► The presence of surface oxygen inhibits NO oxidation.

Keywords
NO oxidation; Nitrogen-doping; Carbon xerogels; Carbon catalysts; NOx abatement
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NO oxidation over nitrogen doped carbon xerogels
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 125, 21 August 2012, Pages 398–408
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