caa a22 4500 467888760 CHVBK 20180406152742.0 cr unu---uuuuu 170328e20060401xx s 000 0 eng 10.1007/s11144-006-0034-2 doi (NATIONALLICENCE)springer-10.1007/s11144-006-0034-2 Catalytic wet air oxidation of oleic acid on ceria-supported platinum catalyst.effect of pH [Elektronische Daten] [Benoît Levasseur, Benoist Renard, Jacques Barbier Jr., Daniel Duprez] Summary: Catalytic wet air oxidation (CWAO) of oleic acid was carried out in a batch reactor on platinum supported ceria catalyst (Pt/CeO2). Oleic acid is a water insoluble linear unsaturated fatty acid of 18 carbon atoms. To increase the homogeneity of the solution by saponification, the influence of NaOH additions in oleic acid CWAO mechanism and catalyst performances have been investigated. The oxidation of such molecule occurs by two types of mechanisms: successive carboxy-decarboxylation which leads essentially to CO2and/or C-C bonds splitting in the alkyl chain inducing a high formation of acetic acid. With or without NaOH, the 5%Pt/CeO2catalyst is active in the conversion of oleic acid and selective to carbon dioxide. In alkaline medium, oleic acid is initially saponified which increases the solubility of the reactant before it to be oxidized. Finally the oxidation is slightly delayed by the presence of NaOH. The catalyst characterizations show no significant difference before and after reaction.</o:p> Springer-Verlag/Akadémiai Kiadó, 2006 oleic acid nationallicence Catalytic wet air oxidation (CWAO) nationallicence Pt/CeO2 catalysts nationallicence saponification nationallicence catalytic water treatment nationallicence Levasseur Benoît Laboratoire de Catalyse en Chimie Organique, LACCO UMR 6503, CNRS and Université de Poitiers, 40 avenue du Recteur Pineau, 82022 Poitiers Cedex France aut Renard Benoist Laboratoire de Catalyse en Chimie Organique, LACCO UMR 6503, CNRS and Université de Poitiers, 40 avenue du Recteur Pineau, 82022 Poitiers Cedex France aut Barbier Jr. Jacques Laboratoire de Catalyse en Chimie Organique, LACCO UMR 6503, CNRS and Université de Poitiers, 40 avenue du Recteur Pineau, 82022 Poitiers Cedex France aut Duprez Daniel Laboratoire de Catalyse en Chimie Organique, LACCO UMR 6503, CNRS and Université de Poitiers, 40 avenue du Recteur Pineau, 82022 Poitiers Cedex France aut Reaction Kinetics and Catalysis Letters Kluwer Academic Publishers 87/2(2006-04-01), 269-279 0133-1736 87:2<269 2006 87 11144 https://doi.org/10.1007/s11144-006-0034-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11144-006-0034-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Levasseur Benoît Laboratoire de Catalyse en Chimie Organique, LACCO UMR 6503, CNRS and Université de Poitiers, 40 avenue du Recteur Pineau, 82022 Poitiers Cedex France aut NATIONALLICENCE 700 1- Renard Benoist Laboratoire de Catalyse en Chimie Organique, LACCO UMR 6503, CNRS and Université de Poitiers, 40 avenue du Recteur Pineau, 82022 Poitiers Cedex France aut NATIONALLICENCE 700 1- Barbier Jr Jacques Laboratoire de Catalyse en Chimie Organique, LACCO UMR 6503, CNRS and Université de Poitiers, 40 avenue du Recteur Pineau, 82022 Poitiers Cedex France aut NATIONALLICENCE 700 1- Duprez Daniel Laboratoire de Catalyse en Chimie Organique, LACCO UMR 6503, CNRS and Université de Poitiers, 40 avenue du Recteur Pineau, 82022 Poitiers Cedex France aut NATIONALLICENCE 773 0- Reaction Kinetics and Catalysis Letters Kluwer Academic Publishers 87/2(2006-04-01), 269-279 0133-1736 87:2<269 2006 87 11144 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer