Catalytic wet air oxidation of phenol over metal catalyst (Ru,Pt) supported on TiO2-CeO2 oxides

被引：57
作者：
Espinosa de los Monteros, A. [1 ,2 ]
Lafaye, G. [1 ]
Cervantes, A. [3 ]
Del Angel, G. [3 ]
Barbier, J., Jr. [1 ]
Torres, G. [2 ]
机构：
[1] Univ Poitiers, UMR CNRS 7285, Inst Chem Poitiers Mat & Nat Resources IC2MP, F-86073 Poitiers 9, France
[2] Univ Juarez Autonoma Tabasco, DACB, Lab Catalisis Heterogenea, Cunduacan 86690, Etabasco, Mexico
[3] Univ Autonoma Metropolitana, Unidad Iztapalapa, Dept Quim, Area Catalisis, Mexico City 09340, DF, Mexico
来源：
CATALYSIS TODAY | 2015年 / 258卷
关键词：
Catalytic wet air oxidation; Phenol; OSC; Lewis acid site; Noble metals; Mixed oxides; MIXED OXIDES; AQUEOUS-SOLUTIONS; ACETIC-ACID; CITRAL HYDROGENATION; CEO2-TIO2; CATALYST; SURFACE-PROPERTIES; PLATINUM; TIO2; REDUCTION; CERIA;
D O I：
10.1016/j.cattod.2015.01.009
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The catalytic performances of Ru and Pt supported on TiO2-xwt% CeO2 were studied in catalytic wet air oxidation (CWAO) of phenol at 160 degrees C and 20 bar of pure oxygen pressure. Contrary to expectations, improved oxygen storage capacities of the materials prove to be detrimental to catalytic performances since they favor the formation of polymers in solution and the accumulation of adsorbed species. On the opposite, the presence of Lewis acid sites promotes the phenol total oxidation. They would favor the activation of the hydroxyl function, thus promoting the ortho-oxidation of phenol and finally the formation of CO2. On the other hand, platinum appears to be more efficient than ruthenium for CWAO of phenol. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：564 / 569
页数：6
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