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Nanocatalysis on Supported Oxides for CO Oxidation

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Abstract

Active gold and palladium nanoparticles supported on a variety of oxides (CeO2, ZrO2, Al2O3, SiO2, MgO and ZnO) were synthesized using laser vaporization and microwave irradiation methods. The catalytic activities for CO oxidation on the nanoparticle catalysts were evaluated and compared among different oxide supports. The effect of shape on the catalytic activity is demonstrated by comparing the activities of the Au and Pd catalysts deposited on MgO nanocubes and ZnO nanobelts. The Au/CeO2 nanoparticles deposited on MgO nanocubes exhibit high catalytic activity and stability. The enhanced catalytic activity is attributed to the presence of a significant concentration of the corner and edge sites in MgO nanocubes. The Au- and Pd-doped Mn2O3 nanoparticles show promising results for the low temperature CO oxidation. Several approaches for incorporating the Au and Pd nanocatalysts within mesoporous oxide supports are presented and discussed.

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Acknowledgments

We thank Mr. Minh Nguyen for helping with the Mn2O3 experiments. We thank the National Science Foundation for supporting this work through the US-Egypt Cooperative Research Program (OISE-0413971) and the CHE-0414613 Award.

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Authors and Affiliations

  1. Department of Chemistry, Virginia Commonwealth University, Richmond, VA, 23284-2006, USA

    Garry Glaspell, Hassan M. A. Hassan, Ahmed Elzatahry, Victor Abdalsayed & M. Samy El-Shall

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  1. Garry Glaspell
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  2. Hassan M. A. Hassan
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  3. Ahmed Elzatahry
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  4. Victor Abdalsayed
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  5. M. Samy El-Shall
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Correspondence to M. Samy El-Shall.

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Glaspell, G., Hassan, H.M.A., Elzatahry, A. et al. Nanocatalysis on Supported Oxides for CO Oxidation. Top Catal 47, 22–31 (2008). https://doi.org/10.1007/s11244-007-9036-1

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