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Methane decomposition over ceria modified iron catalysts

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Title: Methane decomposition over ceria modified iron catalysts
Authors: Tang, Liangguang, Yamaguchi, Doki, Burke, Nick, Trimm, David, Chiang, Ken Ken.Chiang@csiro.au
Source: Catalysis Communications. Sep2010, Vol. 11 Issue 15, p1215-1219. 5p.
Subjects: Iron catalysts, Catalyst supports, Chemical decomposition, Methane, Metallic oxides, Metallic surfaces, Temperature effect, Carbon monoxide
Abstract: Abstract: The catalytic behaviour of ceria supported iron catalysts (Fe–CeO2) was investigated for methane decomposition. The Fe–CeO2 catalysts were found to be more active than catalysts based on iron alone. A catalyst composed of 60wt.% Fe2O3 and 40wt.% CeO2 gave optimal catalytic activity, and the highest iron metal surface area. The well-dispersed Fe state helped to maintain the active surface area for the reaction. Methane conversion increased when the reaction temperature was increased from 600 to 650°C. Continuous formation of trace amounts of carbon monoxide was observed during the reaction due to the oxidation of carbonaceous species by high mobility lattice oxygen in the solid solution formed within the catalyst. This could minimise catalyst deactivation caused by carbon deposits and maintain catalyst activity over a longer period of time. The catalyst also produced filamentous carbon that helped to extend the catalyst life. [ABSTRACT FROM AUTHOR]
Copyright of Catalysis Communications is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 53407614
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  Data: Methane decomposition over ceria modified iron catalysts
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  Data: <searchLink fieldCode="AR" term="%22Tang%2C+Liangguang%22">Tang, Liangguang</searchLink><br /><searchLink fieldCode="AR" term="%22Yamaguchi%2C+Doki%22">Yamaguchi, Doki</searchLink><br /><searchLink fieldCode="AR" term="%22Burke%2C+Nick%22">Burke, Nick</searchLink><br /><searchLink fieldCode="AR" term="%22Trimm%2C+David%22">Trimm, David</searchLink><br /><searchLink fieldCode="AR" term="%22Chiang%2C+Ken%22">Chiang, Ken</searchLink><i> Ken.Chiang@csiro.au</i>
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  Data: <searchLink fieldCode="JN" term="%22Catalysis+Communications%22">Catalysis Communications</searchLink>. Sep2010, Vol. 11 Issue 15, p1215-1219. 5p.
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  Data: <searchLink fieldCode="DE" term="%22Iron+catalysts%22">Iron catalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Catalyst+supports%22">Catalyst supports</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+decomposition%22">Chemical decomposition</searchLink><br /><searchLink fieldCode="DE" term="%22Methane%22">Methane</searchLink><br /><searchLink fieldCode="DE" term="%22Metallic+oxides%22">Metallic oxides</searchLink><br /><searchLink fieldCode="DE" term="%22Metallic+surfaces%22">Metallic surfaces</searchLink><br /><searchLink fieldCode="DE" term="%22Temperature+effect%22">Temperature effect</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+monoxide%22">Carbon monoxide</searchLink>
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  Data: Abstract: The catalytic behaviour of ceria supported iron catalysts (Fe–CeO2) was investigated for methane decomposition. The Fe–CeO2 catalysts were found to be more active than catalysts based on iron alone. A catalyst composed of 60wt.% Fe2O3 and 40wt.% CeO2 gave optimal catalytic activity, and the highest iron metal surface area. The well-dispersed Fe state helped to maintain the active surface area for the reaction. Methane conversion increased when the reaction temperature was increased from 600 to 650°C. Continuous formation of trace amounts of carbon monoxide was observed during the reaction due to the oxidation of carbonaceous species by high mobility lattice oxygen in the solid solution formed within the catalyst. This could minimise catalyst deactivation caused by carbon deposits and maintain catalyst activity over a longer period of time. The catalyst also produced filamentous carbon that helped to extend the catalyst life. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Catalysis Communications is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.catcom.2010.07.004
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      – Code: eng
        Text: English
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        PageCount: 5
        StartPage: 1215
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      – SubjectFull: Iron catalysts
        Type: general
      – SubjectFull: Catalyst supports
        Type: general
      – SubjectFull: Chemical decomposition
        Type: general
      – SubjectFull: Methane
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      – SubjectFull: Metallic oxides
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      – SubjectFull: Metallic surfaces
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      – SubjectFull: Temperature effect
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      – SubjectFull: Carbon monoxide
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              Text: Sep2010
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