Studies of zirconia-doped ceria nanomaterials for CO and C3H8 oxidation

J. A. Wang; M. A. Valenzuela; S. Castillo; J. Salmones; M. Moran-Pineda

doi:10.1023/A:1020720220930

Studies of zirconia-doped ceria nanomaterials for CO and C₃H₈ oxidation

J. A. Wang, M. A. Valenzuela, S. Castillo, J. Salmones, M. Moran-Pineda

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17 Citas (Scopus)

Resumen

Results of structural refinements and catalytic evaluation of a series of palladium supported ceria-zirconia synthesized through a surfactant-assisted technique were reported. It was found that zirconium addition to ceria leads to a crystalline structure distortion and inhibits the crystal growth at high temperature. Rietveld refinements confirm that all the ceria-zirconia samples have nanocrystals with cationic defects in their structures. The Pd-supported catalysts were very active for both CO and propane complete oxidation. The best catalyst 3wt%Pd/Ce_0.8Zr_0.2O₂ has a light-off temperature (T₅₀) as low as 120°C for CO oxidation and 180°C for C₃H₈ combustion.

Idioma original	Inglés
Páginas (desde-hasta)	879-882
Número de páginas	4
Publicación	Journal of Sol-Gel Science and Technology
Volumen	26
N.º	1-3
DOI	https://doi.org/10.1023/A:1020720220930
Estado	Publicada - ene. 2003
Publicado de forma externa	Sí

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title = "Studies of zirconia-doped ceria nanomaterials for CO and C3H8 oxidation",

abstract = "Results of structural refinements and catalytic evaluation of a series of palladium supported ceria-zirconia synthesized through a surfactant-assisted technique were reported. It was found that zirconium addition to ceria leads to a crystalline structure distortion and inhibits the crystal growth at high temperature. Rietveld refinements confirm that all the ceria-zirconia samples have nanocrystals with cationic defects in their structures. The Pd-supported catalysts were very active for both CO and propane complete oxidation. The best catalyst 3wt%Pd/Ce0.8Zr0.2O2 has a light-off temperature (T50) as low as 120°C for CO oxidation and 180°C for C3H8 combustion.",

keywords = "CO and propane combustion, Catalyst, Rietveld refinement, Zirconia-ceria",

author = "Wang, {J. A.} and Valenzuela, {M. A.} and S. Castillo and J. Salmones and M. Moran-Pineda",

note = "Funding Information: The financial support from projects CONACyT-31282-U (Mexico) FIES-98-29-III (IMP-IPN-Mexico) and CGPI-IPN-20011017 is appreciated. The authors would like to thank Mr. J.C. Guevara and Mr. M.L. Tadeo for their assistances.",

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TY - JOUR

T1 - Studies of zirconia-doped ceria nanomaterials for CO and C3H8 oxidation

AU - Wang, J. A.

AU - Valenzuela, M. A.

AU - Castillo, S.

AU - Salmones, J.

AU - Moran-Pineda, M.

N1 - Funding Information: The financial support from projects CONACyT-31282-U (Mexico) FIES-98-29-III (IMP-IPN-Mexico) and CGPI-IPN-20011017 is appreciated. The authors would like to thank Mr. J.C. Guevara and Mr. M.L. Tadeo for their assistances.

PY - 2003/1

Y1 - 2003/1

N2 - Results of structural refinements and catalytic evaluation of a series of palladium supported ceria-zirconia synthesized through a surfactant-assisted technique were reported. It was found that zirconium addition to ceria leads to a crystalline structure distortion and inhibits the crystal growth at high temperature. Rietveld refinements confirm that all the ceria-zirconia samples have nanocrystals with cationic defects in their structures. The Pd-supported catalysts were very active for both CO and propane complete oxidation. The best catalyst 3wt%Pd/Ce0.8Zr0.2O2 has a light-off temperature (T50) as low as 120°C for CO oxidation and 180°C for C3H8 combustion.

AB - Results of structural refinements and catalytic evaluation of a series of palladium supported ceria-zirconia synthesized through a surfactant-assisted technique were reported. It was found that zirconium addition to ceria leads to a crystalline structure distortion and inhibits the crystal growth at high temperature. Rietveld refinements confirm that all the ceria-zirconia samples have nanocrystals with cationic defects in their structures. The Pd-supported catalysts were very active for both CO and propane complete oxidation. The best catalyst 3wt%Pd/Ce0.8Zr0.2O2 has a light-off temperature (T50) as low as 120°C for CO oxidation and 180°C for C3H8 combustion.

KW - CO and propane combustion

KW - Catalyst

KW - Rietveld refinement

KW - Zirconia-ceria

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U2 - 10.1023/A:1020720220930

DO - 10.1023/A:1020720220930

M3 - Artículo

AN - SCOPUS:0037271716

SN - 0928-0707

VL - 26

SP - 879

EP - 882

JO - Journal of Sol-Gel Science and Technology

JF - Journal of Sol-Gel Science and Technology

IS - 1-3

ER -