Title
Photocatalytic carbon oxidation with nitric oxide Photocatalytic carbon oxidation with nitric oxide
Author
Faculty/Department
Faculty of Sciences. Bioscience Engineering
Publication type
article
Publication
Amsterdam ,
Subject
Chemistry
Source (journal)
Applied catalysis : B : environmental. - Amsterdam
Volume/pages
166(2015) , p. 374-380
ISSN
0926-3373
ISI
000348753400042
With
Corrigendum
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The photocatalytic oxidation of carbon black on TiO2 using nitric oxide as an oxidizing agent was investigated. Layer-wise deposited carbon and TiO2 powder was illuminated with UVA light in the presence of NO at parts per million concentrations in dry and hydrated carrier gas at a temperature of 150 degrees C. Carbon was photocatalytically converted mainly into CO2, and NO mainly into N-2. Carbon oxidation rates of 7.2 mu g/h/mgTiO(2) were achieved in the presence of 3000 ppm NO. Under these experimental conditions in the absence of molecular oxygen, formation of surface nitrates causing TiO2 photocatalyst deactivation is suppressed. Addition of water enhances surface nitrate formation and catalyst deactivation. NO and carbon particulate matter are air pollutants emitted by diesel engines. Elimination of soot collected on a diesel particulate filter through oxidation is a demanding reaction requiring temperatures in excess of 250 degrees C. The present study opens perspectives for a low-temperature regeneration strategy for the diesel particulate filter that simultaneously performs DeNO(x) reactions. (C) 2014 Elsevier B.V. All rights reserved.
E-info
https://repository.uantwerpen.be/docman/iruaauth/cbea9e/2a09572.pdf
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https://repository.uantwerpen.be/docman/iruaauth/d5180d/123858.pdf
Handle