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  Carbon formation in catalytic partial oxidation of methane on platinum: Model studies on a polycrystalline Pt foil

Korup, O., Schlögl, R., & Horn, R. (2012). Carbon formation in catalytic partial oxidation of methane on platinum: Model studies on a polycrystalline Pt foil. Catalysis today, 181(1), 177-183. doi:10.1016/j.cattod.2011.04.051.

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 Creators:
Korup, Oliver1, Author           
Schlögl, Robert1, Author           
Horn, Raimund1, Author           
Affiliations:
1Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              

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Free keywords: Catalytic partial oxidation; Methane; Synthesis gas; Platinum; Carbon; Raman spectroscopy
 Abstract: A polycrystalline Pt foil has been investigated as model catalyst in methane catalytic partial oxidation to synthesis gas. It is demonstrated that a substantial amount of carbonaceous deposits forms on the Pt foil upon reaction light-off blocking a large fraction of Pt surface atoms. By using in situ Raman spectroscopy and quantitative spectral analysis the evolution and spatial distribution of these carbonaceous compounds with reaction temperature and reaction time have been characterized. The chemical composition of the carbon material changes from highly reactive and strongly disordered directly after reaction light-off to highly ordered, oxidation and steam reforming resistant after several hours time on stream at 800 °C reaction temperature. Remarkably the carbon distribution at the Pt surface was found to be inhomogeneous and related to the nature of the microcrystals forming the polycrystalline foil in a yet unknown manner.

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Language(s): eng - English
 Dates: 2011-05-312012-02-12
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1016/j.cattod.2011.04.051
 Degree: -

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Title: Catalysis today
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier
Pages: - Volume / Issue: 181 (1) Sequence Number: - Start / End Page: 177 - 183 Identifier: ISSN: 0920-5861
CoNE: https://pure.mpg.de/cone/journals/resource/954925564669