Journal ArticleDOI
Effects of Ce Addition and Pt Precursor on the Activity of Pt/Al2O3 Catalysts for Wet Oxidation of Phenol
Sang-Kyung Kim,Son-Ki Ihm +1 more
TLDR
In this paper, the effects of Ce addition on the activity of Pt/Al2O3 catalysts were investigated for the wet oxidation of phenol, and it was shown that 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.Abstract:
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.read more
Citations
More filters
Journal ArticleDOI
Heterogeneous catalytic wet air oxidation of refractory organic pollutants in industrial wastewaters: a review.
Kyoung-Hun Kim,Son Ki Ihm +1 more
TL;DR: The present review is concerned about the literatures published in this regard and discussions are made on the reaction mechanisms and kinetics proposed for heterogeneous CWAO and also on the typical catalyst deactivations in heterogeneousCWAO, i.e. carbonaceous deposits and metal leaching.
Journal ArticleDOI
Wet Oxidation and Catalytic Wet Oxidation
TL;DR: In this paper, the authors explored three major aspects of the wet oxidation and catalytic wet oxidation (WO) processes, with the major focus being on WO and CWO, using air or oxygen as an oxidant.
Journal ArticleDOI
Heterogeneous catalytic degradation of phenolic substrates: catalysts activity.
TL;DR: This review article explored the catalytic degradation of phenol and some phenols derivates by means of advanced oxidation processes (AOPs) and found the most relevant results in terms of catalytic activity for each class of catalysts were reported.
Journal ArticleDOI
Glycerol aqueous phase reforming for hydrogen generation over Pt catalyst – Effect of catalyst composition and reaction conditions
TL;DR: In this paper, hydrogen production from a glycerol solution by aqueous phase reforming process was studied over supported Pt catalysts, and the affect of metal loadings and operation conditions have been examined.
Journal ArticleDOI
Catalytic wet peroxide oxidation of phenol by pillared clays containing Al–Ce–Fe
TL;DR: A Colombian bentonite was successfully pillared with mixed polyhydroxocationic solutions of Al-Fe or Al-Ce-Fe, with the iron in small quantities, to generate a modified Fenton process to obtain active and stable catalysts for the wet peroxide oxidation of organic pollutants from industrial wastewaters.
References
More filters
Journal ArticleDOI
Ceria in automotive exhaust catalysts: I. Oxygen storage
H.C. Yao,Y.F. Yu Yao +1 more
TL;DR: In this article, the authors measured the oxygen removal at various temperatures using TPR traces of unsupported or alumina-supported ceria and showed that the reduction of surface capping oxygen and bulk oxygen anions is associated with reduction of the shared oxygen anion at the interface.
Journal ArticleDOI
Wet air oxidation
TL;DR: Wet air oxidation (WAO), involving oxidation at high temperature (125-320 C) and pressure (0.5-20 MPa) conditions, is useful for the treatment of hazardous, toxic, and nonbiodegradable waste streams as mentioned in this paper.
Journal ArticleDOI
Catalytic Abatement of Water Pollutants
TL;DR: In this article, a review of solid-catalyzed oxidation and reduction processes for the treatment of wastewater that contains small concentrations of toxic compounds and for which separation is not economical while biological treatment is not feasible.
Journal ArticleDOI
Mechanism of the oxidation of aqueous phenol with dissolved oxygen
Journal ArticleDOI
Interaction of cerium oxide with noble metals
Jack C. Summers,Susan A. Ausen +1 more
TL;DR: In this paper, the effect of thermal aging on catalytic activity was studied under oxidizing (air), inert (N2), and reducing (H2) conditions, and the results showed that small amounts of Ce oxide (0.6-1.3 wt% Ce) enhance the oxidation of CO over fresh Pt and Pd catalysts.
Related Papers (5)
Mechanism of the oxidation of aqueous phenol with dissolved oxygen
Catalytic oxidation of organics in aqueous solutions. I : Kinetics of phenol oxidation
A. Pintar,Janez Levec +1 more