Effects of Ce Addition and Pt Precursor on the Activity of Pt/Al2O3 Catalysts for Wet Oxidation of Phenol

The effects of Ce addition on the activity of Pt/Al2O3 catalysts were investigated for the wet oxidation of phenol. Platinum was impregnated on γ-Al2O3 by using two different precursors:  one is anionic (i.e., H2PtCl6) and the other is cationic (i.e., Pt(NH3)4Cl2). The Pt catalysts from the former s...

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Bibliographic Details
Published in:Industrial & engineering chemistry research 2002-04, Vol.41 (8), p.1967-1972
Main Authors: Kim, Sang-Kyung, Ihm, Son-Ki
Format: Article
Language:English
Subjects:
Applied sciences
Catalysis
Catalysts: preparations and properties
Chemistry
Exact sciences and technology
General and physical chemistry
General purification processes
Pollution
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
Wastewaters
Water treatment and pollution
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Summary:The effects of Ce addition on the activity of Pt/Al2O3 catalysts were investigated for the wet oxidation of phenol. Platinum was impregnated on γ-Al2O3 by using two different precursors:  one is anionic (i.e., H2PtCl6) and the other is cationic (i.e., Pt(NH3)4Cl2). The Pt catalysts from the former showed much higher activity than that from the latter, because the former resulted in a better metal dispersion than the latter. Cerium addition lowered the catalytic activity of Pt/Al2O3 catalysts from H2PtCl6, while it improved the activity of Pt/Al2O3 catalysts from Pt(NH3)4Cl2. The effect of Ce addition on the wet oxidation activity of Pt−Ce/Al2O3 could be explained by the differences in Pt dispersion and the Pt−Ce interactions.
ISSN:0888-5885
1520-5045
DOI:10.1021/ie010590p