Small gold particles supported on MgFe2O4 nanocrystals as novel catalyst for CO 
oxidation

Jia, Chun-Jiang; Liu, Yong; Schwickardi, Manfred; Weidenthaler, Claudia; Spliethoff, Bernd; Schmidt, Wolfgang; Schüth, Ferdi

doi:10.1016/j.apcata.2010.07.036

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Small gold particles supported on MgFe₂O₄ nanocrystals as novel catalyst for CO oxidation

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Jia, Chun-Jiang
Research Group Rinaldi, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Liu, Yong
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Schwickardi, Manfred
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

/persons/resource/persons59100

Weidenthaler, Claudia
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

/persons/resource/persons59011

Spliethoff, Bernd
Service Department Lehmann (EMR), Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Schmidt, Wolfgang
Research Group Schmidt, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Schüth, Ferdi
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Citation

Jia, C.-J., Liu, Y., Schwickardi, M., Weidenthaler, C., Spliethoff, B., Schmidt, W., et al. (2010). Small gold particles supported on MgFe₂O₄ nanocrystals as novel catalyst for CO oxidation. Applied Catalysis A: General, 386(1-2), 94-100. doi:10.1016/j.apcata.2010.07.036.

Cite as: https://hdl.handle.net/11858/00-001M-0000-000F-8D63-F

Abstract

We present the study on the catalytic performance of gold particles supported on spinel type MgFe₂O₄ nanocrystals (Au/MgFe₂O₄) which exhibit high activity for low temperature CO oxidation. Using XRD, TEM, XPS and CO titration techniques, we investigated the effect of the pretreatment atmosphere on the structure and catalytic properties of the Au/MgFe₂O₄ catalyst in CO oxidation. TEM, XPS and XRD showed that the pretreatment atmosphere had a negligible effect on the particle size distribution, chemical states of the gold, and the structure of the support. Among the various pretreated catalysts, O₂-Au/MgFe₂O₄ exhibits superior activity, indicating that pretreatment in oxidative atmosphere induced the high capability of the catalyst to activate CO and supply active oxygen for CO oxidation as confirmed by CO titration experiments.