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Physicochemical characterization of Pt and Ir particles deposited on Ce(1-x)Ru(x)O2 solid-solutions for CO oxidation

Published online by Cambridge University Press:  18 November 2019

E. Gonzalez-A ,
R. Rangel Open the ORCID record for R. Rangel [Opens in a new window] ,
J. Lara ,
J. J. Alvarado  and
P. Bartolo
E. Gonzalez-A
Affiliation:
División de Estudios de posgrado de la Facultad de Ingeniería Química, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México.
R. Rangel*
Affiliation:
División de Estudios de posgrado de la Facultad de Ingeniería Química, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México.
J. Lara
Affiliation:
División de Estudios de posgrado de la Facultad de Ingeniería Química, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México.
J. J. Alvarado
Affiliation:
Departamento de Física Aplicada, Centro de Investigación y de Estudios Avanzados del Instituto Politecnico Nacional-Unidad Mérida, Mérida, Yucatán, México.
P. Bartolo
Affiliation:
Departamento de Física Aplicada, Centro de Investigación y de Estudios Avanzados del Instituto Politecnico Nacional-Unidad Mérida, Mérida, Yucatán, México.
*
*(Email: rrsumich@gmail.com)
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Abstract

Pt/Ce1-xRuxO2 and Ir/Ce1-xRuxO2 catalysts were prepared through the sol-gel technique, under microwave heating. In a first step, the Ce1-xRuxO2 solid solutions were prepared. Subsequently, an incipient wet impregnation process was carried out to homogeneously achieve the dispersion, either of platinum or iridium nanoparticles. The Pt/Ce1-xRuxO2 and Ir/Ce1-xRuxO2 catalysts were characterized by means of SEM, XRD, XPS, TEM, and specific surface area measurements. Crystal size and shifting into the CeO2 structure were detected after ruthenium doping producing the Ce1-xRuxO2 solid-solutions. Trough XPS technique Pt and Ir nanoparticles were found evenly dispersed in a metallic state. Those features allow us to foresee that, in the near future, these materials could be used efficiently as catalysts for oxidation process.

Keywords

catalyticcarbon dioxideenvironmentmicrowave heatingscanning electron microscopy (SEM)
Type
Articles
Information
MRS Advances , Volume 4 , Issue 61-62: International Materials Research Congress XXVIII , 2019 , pp. 3433 - 3440
Copyright
Copyright © Materials Research Society 2019 

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