Methanol Reactivity on Silica-Supported Ceria Nanoparticles

Uhlrich, John; Yang, Bing; Shaikhutdinov, Shamil K.

doi:10.1007/s11244-014-0296-2

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Methanol Reactivity on Silica-Supported Ceria Nanoparticles

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Uhlrich, John
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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Yang, Bing
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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Shaikhutdinov, Shamil K.
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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Citation

Uhlrich, J., Yang, B., & Shaikhutdinov, S. K. (2014). Methanol Reactivity on Silica-Supported Ceria Nanoparticles. Topics in Catalysis, 57(14-16), 1229-1235. doi:10.1007/s11244-014-0296-2.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0024-52E4-5

Abstract

Ceria (CeO₂) has been used in a number of catalytic processes, either as a support or promoter. For a better understanding of the factors that control the reactivity of ceria, we have used well-ordered CeO₂(111) films and ceria nanoparticles supported on an ordered SiO₂ film, as model catalysts. The systems were examined in the dehydrogenation of methanol to formaldehyde as a test reaction by using the techniques of infrared spectroscopy and temperature programmed desorption. The results revealed low-temperature reactivity (below 450 K) for supported ceria particles that is not present on ordered films, which show reactivity at 565 K. The results indicate that low-coordinated sites play an important role in the methanol reactivity on ceria