Catalytic wet air oxidation of succinic acid over Ru and Pt catalysts supported on Ce Zr1−O2 mixed oxides

2015 ◽  
Vol 165 ◽  
pp. 1-9 ◽  
Author(s):  
Shaoxia Yang ◽  
Michèle Besson ◽  
Claude Descorme
Keyword(s):  
Succinic Acid ◽  
Mixed Oxides ◽  
Catalytic Wet Air Oxidation ◽  
Pt Catalysts ◽  
Air Oxidation ◽  
Wet Air Oxidation

Catalysts for Wet Air Oxidation Based on Ce-Zr-Pr-O Mixed Oxides Prepared by Soft Chemistry

2006 ◽  
Vol 45 ◽  
pp. 2089-2095
Author(s):  
Jana Mikulová ◽  
Sylvie Rossignol ◽  
Jacques Barbier Jr. ◽  
Charles Kappenstein ◽  
Daniel Duprez
Keyword(s):  
Aqueous Solution ◽  
Mixed Oxides ◽  
Platinum Catalyst ◽  
Sol Gel ◽  
Ruthenium Catalysts ◽  
Catalytic Wet Air Oxidation ◽  
Air Oxidation ◽  
Wet Air Oxidation ◽  
Soft Chemistry ◽  
Pure Ceria

Sol-gel Zr0.1Ce0.9O2 and Zr0.1(Ce0.75Pr0.25)O2 mixed oxides and coprecipitated pure ceria CeO2 displaying the fluorine type structure have been used as platinum or ruthenium catalysts’ supports for catalytic wet air oxidation (CWAO) of aqueous solution of acetic acid (78 mmol.L-1). These catalysts were prepared by conventional impregnation (5 wt-%) from platinum and ruthenium precursor salts or by exchange (~2 wt-%) in the case of ruthenium. A screening of catalysts in CWAO at 200°C under 2 MPa was performed and reveals that the best platinum catalyst is supported on pure ceria displaying large surface. For ruthenium catalysts, the highest conversion after 3 hours of reaction has been reached by the Ru/Zr-Ce-O system.

scholarly journals Influence of the Active Phase (Fe, Ni, and Ni–Fe) of Mixed Oxides in CWAO of Crystal Violet

Catalysts ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1053 ◽  
Author(s):  
Katherine Archila ◽  
Ana María Campos ◽  
Lorena Lugo ◽  
Crispín Astolfo Celis ◽  
Sonia Moreno ◽  
...  
Keyword(s):  
Crystal Violet ◽  
Atmospheric Pressure ◽  
Mixed Oxides ◽  
Catalytic Properties ◽  
Oxygen Demand ◽  
Textural Properties ◽  
Active Phase ◽  
Catalytic Wet Air Oxidation ◽  
Air Oxidation ◽  
Wet Air Oxidation

The catalytic oxidation of aqueous crystal violet (CV) solutions was investigated using Ni and Fe catalysts supported over Mg–Al oxides synthesized by the autocombustion method. The influence of temperature, loading, and selectivity were studied in the catalytic wet air oxidation (CWAO) of CV. The kind of metal had an important contribution in the redox process as significant differences were observed between Fe, Ni, and their mixtures. The catalysts with only Fe as active phase were more efficient for the oxidation of CV under normal conditions (T = 25 °C and atmospheric pressure) compared to those containing Ni, revealing the influence of the transition metal on catalytic properties. It was found that iron-containing materials displayed enhanced textural properties. The synthesis of Fe/MgAl catalysts by the autocombustion method led to solids with excellent catalytic behavior, 100% CV degradation in eight hours of reaction, 68% selectivity to CO2, and significant reduction of chemical oxygen demand (COD).

Pt-catalysts supported on activated carbons for catalytic wet air oxidation of aniline: Activity and stability

2011 ◽  
Vol 105 (1-2) ◽  
pp. 86-94 ◽  
Author(s):  
Sergio Morales-Torres ◽  
Adrián M.T. Silva ◽  
Francisco J. Maldonado-Hódar ◽  
Bruno F. Machado ◽  
Agustín F. Pérez-Cadenas ◽  
...  
Keyword(s):  
Activated Carbons ◽  
Catalytic Wet Air Oxidation ◽  
Pt Catalysts ◽  
Air Oxidation ◽  
Wet Air Oxidation

Catalytic wet air oxidation of a high strength p-nitrophenol wastewater over Ru and Pt catalysts: Influence of the reaction conditions on biodegradability enhancement

2012 ◽  
Vol 123-124 ◽  
pp. 141-150 ◽  
Author(s):  
Mariángel Martín-Hernández ◽  
Julián Carrera ◽  
María Eugenia Suárez-Ojeda ◽  
Michèle Besson ◽  
Claude Descorme
Keyword(s):  
High Strength ◽  
Catalytic Wet Air Oxidation ◽  
Pt Catalysts ◽  
Air Oxidation ◽  
Wet Air Oxidation ◽  
Reaction Conditions
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