Silica supported copper and cerium oxide catalysts for ethyl acetate oxidation

[EN] The formation of active sites in the silica supported copper and cerium oxide hi-component catalysts for total oxidation of ethyl acetate was studied by Nitrogen physisorption, XRD, XPS, UV-Vis, Raman, FTIR of adsorbed CO spectroscopies and TPR. It was found that the interaction between the copper oxide nano-particles and the supported on the silica ceria ones is realized with the formation of interface layer of penetrated into ceria lattice copper ions in different oxidative state. This type of interaction improves the dispersion of copper oxide particles and provides higher accessibility of the reactants to the copper active sites even at low copper amount. (C) 2013 Elsevier Inc. All rights reserved.
The paper is published with the support of Project No. BG051PO001-3.3-05/0001. Financial support of BAS, FNI of Bulgarian Ministry of Education, Project (sic)HTC/(sic)01/8, DGICYT in Spain (Project CTQ2012-37925-C03-01) and bilateral project Bulgarian Spain Inter-academic Exchange Agreement (Project 2009BG0002) are also acknowledged.