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Characterization of a ceria-zirconia-supported Cu oxides catalyst: An FT-IR study on the catalytic oxidation of propylene

Paper ID Volume ID Publish Year Pages File Format Full-Text
51448 46843 2009 4 PDF Available
Title
Characterization of a ceria-zirconia-supported Cu oxides catalyst: An FT-IR study on the catalytic oxidation of propylene
Abstract

A study on the structural and morphological characterization of a ceria-zirconia-supported copper oxide (with nominal composition CuOx/Ce0.5Zr0.5O2) and on its catalytic activity for the oxidation of propylene is reported. XRD and spectroscopic analyses show that the supported phase is highly dispersed over the support constituted by a fluorite-like ceria-zirconia solid solution. FT-IR spectra of adsorbed pyridine evidence the presence of Lewis acid sites. Propylene reacts with the catalyst surface and according to a Mars van Krevelen mechanism giving rise upon increasing the temperature to propanal, propanoate, small amounts of acrylate, acetate plus formiate and finally CO2.

Keywords
Ce–Zr mixed oxides; Supported Cu oxides catalyst; Catalytic oxidation; Propylene
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Characterization of a ceria-zirconia-supported Cu oxides catalyst: An FT-IR study on the catalytic oxidation of propylene
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 10, Issue 6, 15 February 2009, Pages 861–864
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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