Please use this identifier to cite or link to this item: https://scholarhub.balamand.edu.lb/handle/uob/1764
Title: A comparative study of Cu, Ag and Au doped CeO2 in the total oxidation of volatile organic compounds (VOCs)
Authors: Aboukaïs, Antoine
Skaf, Mira
Hany, Sara
Cousin, Renaud
Aouad, Samer 
Labaki, Madona
Abi Aad, Edmond
Affiliations: Department of Chemistry 
Keywords: Oxides
Chemical synthesis
Powder diffraction
X-ray photo-emission spectroscopy
Electron paramagnetic resonance (EPR)
Subjects: Oxidation
Issue Date: 2016
Part of: Journal of materials chemistry and physics
Volume: 177
Start page: 570
End page: 576
Abstract: 
Total oxidation of two Volatile Organic Compounds (VOCs), propylene and toluene, was investigated over M/CeO2 catalysts, where M is a metal from IB group (i.e. Au, Ag, Cu), prepared by two different methods: the conventional wet impregnation and the deposition-precipitation. The catalysts have been characterized by means of total surface area (BET), X-ray diffraction (XRD), electron paramagnetic resonance (EPR), X-ray photoelectron spectroscopy (XPS), diffuse reflectance ultra-violet-visible spectroscopy (DR-UV/Vis), and temperature-programmed reduction (TPR), in order to explain the differences observed in their catalytic activity towards the studied reactions. By comparing the two different preparation methods, the presence of metal in high oxidation state for gold and silver, and the presence of clusters for copper were the main factors responsible for the high catalytic activity. This latter was also found to be related, when comparing the different IB metals, to the values of the oxidation/reduction potential of the redox couples of the different metals.
URI: https://scholarhub.balamand.edu.lb/handle/uob/1764
DOI: 10.1016/j.matchemphys.2016.04.072
Ezproxy URL: Link to full text
Type: Journal Article
Appears in Collections:Department of Chemistry

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