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Journal of Sol-Gel Science and Technology
Erschienen in: Journal of Sol-Gel Science and Technology 3/2015

01.06.2015 | Original Paper

The effect of titania precursors and ceria loadings on textural and chemical properties of TiO2–CeO2 and Pt–Rh/TiO2–CeO2

verfasst von: Jocelyn Miranda-Sánchez, Ignacio Elizalde, Luis Lartundo-Rojas, Isaías Hernández-Pérez, David Jaramillo-Vigueras, Román Ramírez-López

Erschienen in: Journal of Sol-Gel Science and Technology | Ausgabe 3/2015

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Abstract

The paper presents the results of the authors regarding the synthesis of TiO2–CeO2 mixed oxides using different precursors: (1) titanium isopropoxide and (2) titanium butoxide with different ceria loadings. The samples were characterized from chemical, structural and morphological point of view. The obtained powders were used as support for Pt–Rh impregnation and the influence the Pt–Rh in reduction of the support was established. From XPS, TPR and EPR analysis it was concluded that Ce3+ species are present in higher proportion (>50 %) in series supported Pt–Rh catalysts and it was taken as indicative of oxygen mobility. Correlation between ceria loading and percentage of Ce3+ in catalytic samples was observed. It was also evident that Rh addition allows increasing the reducibility of materials due to interactions metal-support.

Graphical Abstract

Vorheriger Artikel Sol–gel preparation of fluoro-containing ORMOSIL antireflective coating with resistance simultaneously to hydrophilic and oleophilic pollutants
Nächster Artikel The synthesis of ultrasmall ZnO@PEG nanoparticles and its fluorescence properties

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Metadaten
Titel
The effect of titania precursors and ceria loadings on textural and chemical properties of TiO2–CeO2 and Pt–Rh/TiO2–CeO2
verfasst von
Jocelyn Miranda-Sánchez
Ignacio Elizalde
Luis Lartundo-Rojas
Isaías Hernández-Pérez
David Jaramillo-Vigueras
Román Ramírez-López
Publikationsdatum
01.06.2015
Verlag
Springer US
Erschienen in
Journal of Sol-Gel Science and Technology / Ausgabe 3/2015
Print ISSN: 0928-0707
Elektronische ISSN: 1573-4846
DOI
https://doi.org/10.1007/s10971-015-3652-1

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