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  The oxidation of soot particulate in the presence of NO2

Müller, J.-O., Frank, B., Jentoft, R. E., Schlögl, R., & Su, D. S. (2012). The oxidation of soot particulate in the presence of NO2. Catalysis today, 191(1), 106-111. doi:10.1016/j.cattod.2012.03.010.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-9C95-A Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-9C97-6
Latest Version: http://hdl.handle.net/11858/00-001M-0000-0014-3B64-1
Genre: Journal Article

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 Creators:
Müller, Jens-Oliver1, Author
Frank, Benjamin2, Author              
Jentoft, Rolf E.3, Author              
Schlögl, Robert2, Author              
Su, Dang Sheng2, 4, Author              
Affiliations:
1Siemens AG, 80333 Munich, Germany, escidoc:persistent22              
2Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, escidoc:24023              
3Chemical, Biological, and Materials Engineering, University of Oklahoma School, escidoc:persistent22              
4Shenyang National Laboratory for Materials Science Institute of Metal Research, Chinese Academy of Science, escidoc:persistent22              

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Free keywords: Carbon; Microstructure; Surface functionalization; Thermogravimetry; Kinetics; Combustion
 Abstract: The microstructure of soot-like carbons is correlated with their reactivity toward combustion. The focus of this study is on Euro IV heavy duty diesel engine soot. Additionally, two soot samples providing lower and larger particle sizes as their most striking property are taken as references. The effect of NO2 addition to the O2-containing gas feed is investigated. It is found that NO2 accelerates the oxidation of soot in the low-temperature region (250–400 °C) due to an increased surface functionalization with oxygen groups and a subsequent decomposition thereof. Accordingly, initially highly functionalized soot is less susceptible to this effect. The apparent activation energy of combustion is remarkably lowered in the presence of NO2. It is found that the total reactivity correlates with microstructural features such as surface functionalization, size and curvature of basic structural units, stack height, and particle diameter.

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Language(s): eng - English
 Dates: 2012-04-062012-09-30
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1016/j.cattod.2012.03.010
 Degree: -

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Title: Catalysis today
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier
Pages: - Volume / Issue: 191 (1) Sequence Number: - Start / End Page: 106 - 111 Identifier: ISSN: 0920-5861
CoNE: http://pubman.mpdl.mpg.de/cone/journals/resource/954925564669