caa a22 4500 606173501 CHVBK 20210128100733.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s11244-015-0457-y doi (NATIONALLICENCE)springer-10.1007/s11244-015-0457-y Cerium Oxide Based Catalysts for Wet Air Oxidation of Bisphenol A [Elektronische Daten] [Anne Heponiemi, Said Azalim, Tao Hu, Ulla Lassi] Catalytic wet air oxidation of an aqueous solution, bisphenol A (BPA), was carried out at 160°C and at 20bar of air in a batch reactor. Silver catalysts (2.5 wt%) prepared by wet impregnation and complexation on commercial CeO2 in addition to Ce0.85Zr0.15O2 and Ce0.2Zr0.8O2 sol-gel mixed oxides were synthesized and used as catalysts in the reaction. Characterizations of the catalysts were performed by using FESEM, XRD, BET, XPS and ICP-OES techniques. Residual BPA concentration was analyzed by using an UV-Vis technique and organic compound content was measured via the total organic carbon method. Commercial CeO2 showed a smaller specific surface area and a larger crystallite size than laboratory prepared Ce-Zr mixed oxides. The highest BPA removal (76%) was achieved after 3h with CeO2, Ce0.85Zr0.15O2 and Ag/Ce0.85Zr0.15O2 catalysts revealing that the addition of silver had no effect on the catalytic activity of the pure supports. However, the loading of active metal to the supports by complexation decreased the adsorption of the BPA during the heating period and hence the Ag/Ce0.85Zr0.15O2 prepared via complexation was the most active catalyst with only 1% adsorption of BPA. Moreover, the activity of the catalysts was not related to the surface area of the samples. According to the ICP-OES analysis of the terminal water samples, leaching of the silver was occurred during oxidation experiments explaining the behavior of Ag catalysts in the reaction. Springer Science+Business Media New York, 2015 CWAO nationallicence BPA nationallicence Silver nationallicence Cerium nationallicence Zirconium nationallicence XPS nationallicence Heponiemi Anne Research Unit of Sustainable Chemistry, University of Oulu, P.O. Box 3000, 90014, Oulu, Finland aut Azalim Said Research Unit of Sustainable Chemistry, University of Oulu, P.O. Box 3000, 90014, Oulu, Finland aut Hu Tao Research Unit of Sustainable Chemistry, University of Oulu, P.O. Box 3000, 90014, Oulu, Finland aut Lassi Ulla Research Unit of Sustainable Chemistry, University of Oulu, P.O. Box 3000, 90014, Oulu, Finland aut Topics in Catalysis Springer US; http://www.springer-ny.com 58/14-17(2015-10-01), 1043-1052 1022-5528 58:14-17<1043 2015 58 11244 https://doi.org/10.1007/s11244-015-0457-y 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/s11244-015-0457-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Heponiemi Anne Research Unit of Sustainable Chemistry, University of Oulu, P.O. Box 3000, 90014, Oulu, Finland aut NATIONALLICENCE 700 1- Azalim Said Research Unit of Sustainable Chemistry, University of Oulu, P.O. Box 3000, 90014, Oulu, Finland aut NATIONALLICENCE 700 1- Hu Tao Research Unit of Sustainable Chemistry, University of Oulu, P.O. Box 3000, 90014, Oulu, Finland aut NATIONALLICENCE 700 1- Lassi Ulla Research Unit of Sustainable Chemistry, University of Oulu, P.O. Box 3000, 90014, Oulu, Finland aut NATIONALLICENCE 773 0- Topics in Catalysis Springer US; http://www.springer-ny.com 58/14-17(2015-10-01), 1043-1052 1022-5528 58:14-17<1043 2015 58 11244