期刊
CATALYSIS TODAY
卷 258, 期 -, 页码 564-569出版社
ELSEVIER
DOI: 10.1016/j.cattod.2015.01.009
关键词
Catalytic wet air oxidation; Phenol; OSC; Lewis acid site; Noble metals; Mixed oxides
资金
- Secretaria de Educacion Publica de Mexico
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.
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