Please use this identifier to cite or link to this item:
|Title:||A comparative study of Cu, Ag and Au doped CeO2 in the total oxidation of volatile organic compounds (VOCs)||Authors:||Aboukaïs, Antoine
Abi Aad, Edmond
|Affiliations:||Department of Chemistry||Keywords:||Oxides
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|
Show full item record
checked on Jul 17, 2021
checked on Jul 23, 2021
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.