caa a22 4500 606195556 CHVBK 20210128100920.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s10934-015-9967-z doi (NATIONALLICENCE)springer-10.1007/s10934-015-9967-z Comparative study of textural, structural and catalytic properties of xerogels and aerogels CeO2-TiO2 mixed oxides [Elektronische Daten] [T. Hammedi, M. Triki, Z. Ksibi, A. Ghorbel, F. Medina] CeO2-TiO2 mixed oxides (aerogels and xerogels) were synthesized via sol-gel method with a Ce/Ti molar ratio of 1/5. Characterization of the samples was accomplished by N2 physisorption, XRD, UV-Vis and FTIR spectroscopy, H2-TPR and TEM. Textural analysis reveals that aerogels showed a pronounced specific surface area. XRD analysis confirmed that xerogels were amorphous whereas aerogels stabilized TiO2 anatase phase even at high calcination temperature. Furthermore, the addition of CeO2 to the TiO2 samples decreases the anatase-rutile phase transformation and the band gap energy when compared with pure TiO2. These mixed oxides were used as supports for Ru catalysts in the catalytic wet air oxidation of p-hydroxybenzoic acid at 140°C and 50bar of air. The Ru catalyst supported on aerogel exhibits good catalytic activity due to the high Ru dispersion. Springer Science+Business Media New York, 2015 Sol-gel nationallicence Mixed oxides nationallicence CeO2-TiO2 nationallicence Aerogels nationallicence Xerogels nationallicence CWAO nationallicence Hammedi T. Laboratoire de Chimie des Matériaux et Catalyse, Faculté des Sciences de Tunis, Université Tunis ElManar, 2092, Tunis, Tunisia aut Triki M. Centre National des Recherches en Sciences des Matériaux, Pôle Technologique Borj Cedria, BP 73, 8027, Soliman, Tunisia aut Ksibi Z. Laboratoire de Chimie des Matériaux et Catalyse, Faculté des Sciences de Tunis, Université Tunis ElManar, 2092, Tunis, Tunisia aut Ghorbel A. Laboratoire de Chimie des Matériaux et Catalyse, Faculté des Sciences de Tunis, Université Tunis ElManar, 2092, Tunis, Tunisia aut Medina F. Departament d'Enginyeria Química, Universitat Rovira i Virgili, Av Països Catalans 26, 43007, Tarragona, Spain aut Journal of Porous Materials Springer US; http://www.springer-ny.com 22/4(2015-08-01), 939-948 1380-2224 22:4<939 2015 22 10934 https://doi.org/10.1007/s10934-015-9967-z text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10934-015-9967-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hammedi T. Laboratoire de Chimie des Matériaux et Catalyse, Faculté des Sciences de Tunis, Université Tunis ElManar, 2092, Tunis, Tunisia aut NATIONALLICENCE 700 1- Triki M. Centre National des Recherches en Sciences des Matériaux, Pôle Technologique Borj Cedria, BP 73, 8027, Soliman, Tunisia aut NATIONALLICENCE 700 1- Ksibi Z. Laboratoire de Chimie des Matériaux et Catalyse, Faculté des Sciences de Tunis, Université Tunis ElManar, 2092, Tunis, Tunisia aut NATIONALLICENCE 700 1- Ghorbel A. Laboratoire de Chimie des Matériaux et Catalyse, Faculté des Sciences de Tunis, Université Tunis ElManar, 2092, Tunis, Tunisia aut NATIONALLICENCE 700 1- Medina F. Departament d'Enginyeria Química, Universitat Rovira i Virgili, Av Països Catalans 26, 43007, Tarragona, Spain aut NATIONALLICENCE 773 0- Journal of Porous Materials Springer US; http://www.springer-ny.com 22/4(2015-08-01), 939-948 1380-2224 22:4<939 2015 22 10934