Highly dispersed Ptδ+ on TixCe(1-x)O2 as an active phase in preferential oxidation of CO

S. Rico-Francés; E. O. Jardim; T. A. Wezendonk; F. Kapteijn; J. Gascon; A. Sepúlveda-Escribano; Enrique V. Ramos-Fernandez

doi:10.1016/j.apcatb.2015.06.031

Highly dispersed Pt^δ+ on Ti_xCe_(1-x)O₂ as an active phase in preferential oxidation of CO

S. Rico-Francés, E. O. Jardim, T. A. Wezendonk, F. Kapteijn, J. Gascon, A. Sepúlveda-Escribano, Enrique V. Ramos-Fernandez^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

35 Scopus citations

Abstract

Structure-activity relationships for 1wt.% Pt catalysts were investigated for a series of Ti_xCe_(1-x)O₂ (x=1, 0.98, 0.9, 0.5, 0.2 and 0) supports prepared by the sol-gel method. The catalysts prepared by impregnation were characterized in detail by applying a wide range of techniques as N₂-isotherms, XRF, XRD, Raman, XPS, H₂-TPR, Drifts, UV-vis, etc. and tested in the preferential oxidation of CO in the presence of H₂. Also several reaction conditions were deeply analyzed. A strong correlation between catalyst performance and the electronic properties let us to propose, based in all the experimental results, a plausible reaction mechanism where several redox cycles are involved.

Original language	English (US)
Pages (from-to)	169-178
Number of pages	10
Journal	Applied Catalysis B: Environmental
Volume	180
DOIs	https://doi.org/10.1016/j.apcatb.2015.06.031
State	Published - Jan 1 2016
Externally published	Yes

Keywords

Ceria
Hydrogen purification
PROX
Platinum
Titania

ASJC Scopus subject areas

Catalysis
General Environmental Science
Process Chemistry and Technology

Access to Document

10.1016/j.apcatb.2015.06.031

Cite this

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title = "Highly dispersed Ptδ+ on TixCe(1-x)O2 as an active phase in preferential oxidation of CO",

abstract = "Structure-activity relationships for 1wt.% Pt catalysts were investigated for a series of TixCe(1-x)O2 (x=1, 0.98, 0.9, 0.5, 0.2 and 0) supports prepared by the sol-gel method. The catalysts prepared by impregnation were characterized in detail by applying a wide range of techniques as N2-isotherms, XRF, XRD, Raman, XPS, H2-TPR, Drifts, UV-vis, etc. and tested in the preferential oxidation of CO in the presence of H2. Also several reaction conditions were deeply analyzed. A strong correlation between catalyst performance and the electronic properties let us to propose, based in all the experimental results, a plausible reaction mechanism where several redox cycles are involved.",

keywords = "Ceria, Hydrogen purification, PROX, Platinum, Titania",

author = "S. Rico-Franc{\'e}s and Jardim, {E. O.} and Wezendonk, {T. A.} and F. Kapteijn and J. Gascon and A. Sep{\'u}lveda-Escribano and Ramos-Fernandez, {Enrique V.}",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier B.V.",

year = "2016",

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doi = "10.1016/j.apcatb.2015.06.031",

language = "English (US)",

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T1 - Highly dispersed Ptδ+ on TixCe(1-x)O2 as an active phase in preferential oxidation of CO

AU - Rico-Francés, S.

AU - Jardim, E. O.

AU - Wezendonk, T. A.

AU - Kapteijn, F.

AU - Gascon, J.

AU - Sepúlveda-Escribano, A.

AU - Ramos-Fernandez, Enrique V.

PY - 2016/1/1

Y1 - 2016/1/1

N2 - Structure-activity relationships for 1wt.% Pt catalysts were investigated for a series of TixCe(1-x)O2 (x=1, 0.98, 0.9, 0.5, 0.2 and 0) supports prepared by the sol-gel method. The catalysts prepared by impregnation were characterized in detail by applying a wide range of techniques as N2-isotherms, XRF, XRD, Raman, XPS, H2-TPR, Drifts, UV-vis, etc. and tested in the preferential oxidation of CO in the presence of H2. Also several reaction conditions were deeply analyzed. A strong correlation between catalyst performance and the electronic properties let us to propose, based in all the experimental results, a plausible reaction mechanism where several redox cycles are involved.

AB - Structure-activity relationships for 1wt.% Pt catalysts were investigated for a series of TixCe(1-x)O2 (x=1, 0.98, 0.9, 0.5, 0.2 and 0) supports prepared by the sol-gel method. The catalysts prepared by impregnation were characterized in detail by applying a wide range of techniques as N2-isotherms, XRF, XRD, Raman, XPS, H2-TPR, Drifts, UV-vis, etc. and tested in the preferential oxidation of CO in the presence of H2. Also several reaction conditions were deeply analyzed. A strong correlation between catalyst performance and the electronic properties let us to propose, based in all the experimental results, a plausible reaction mechanism where several redox cycles are involved.

KW - Ceria

KW - Hydrogen purification

KW - PROX

KW - Platinum

KW - Titania

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U2 - 10.1016/j.apcatb.2015.06.031

DO - 10.1016/j.apcatb.2015.06.031

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VL - 180

SP - 169

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JO - Applied Catalysis B: Environmental

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