The effect of titania precursors and ceria loadings on textural and chemical properties of TiO<inf>2</inf>–CeO<inf>2</inf> and Pt–Rh/TiO<inf>2</inf>–CeO<inf>2</inf>

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

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3 Citations (Scopus)

Abstract

© 2015, Springer Science+Business Media New York. 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.
Original languageAmerican English
Pages (from-to)707-717
Number of pages635
JournalJournal of Sol-Gel Science and Technology
DOIs
StatePublished - 1 Jun 2015

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Cerium compounds
chemical properties
Chemical properties
titanium
Titanium
Catalyst supports
Impregnation
Powders
Oxides
Paramagnetic resonance
X ray photoelectron spectroscopy
Metals
mixed oxides
Oxygen
proportion
catalysts
Industry
oxygen
synthesis
metals

Cite this

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title = "The effect of titania precursors and ceria loadings on textural and chemical properties of TiO2–CeO2 and Pt–Rh/TiO2–CeO2",
abstract = "{\circledC} 2015, Springer Science+Business Media New York. 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.",
author = "Jocelyn Miranda-S{\'a}nchez and Ignacio Elizalde and Luis Lartundo-Rojas and Isa{\'i}as Hern{\'a}ndez-P{\'e}rez and David Jaramillo-Vigueras and Rom{\'a}n Ram{\'i}rez-L{\'o}pez",
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T1 - The effect of titania precursors and ceria loadings on textural and chemical properties of TiO2–CeO2 and Pt–Rh/TiO2–CeO2

AU - Miranda-Sánchez, Jocelyn

AU - Elizalde, Ignacio

AU - Lartundo-Rojas, Luis

AU - Hernández-Pérez, Isaías

AU - Jaramillo-Vigueras, David

AU - Ramírez-López, Román

PY - 2015/6/1

Y1 - 2015/6/1

N2 - © 2015, Springer Science+Business Media New York. 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.

AB - © 2015, Springer Science+Business Media New York. 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.

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