Catalytic Combustion of Soot on KNO3/ZrO2 Catalysts. Effect of Potassium Nitrate Loading on Activity

Co−KNO3−ZrO2 and Co−ZrO2 were prepared. The concentration effect of potassium nitrate on the activity was studied for the oxidation reaction of soot. Catalysts were characterized using the techniques BET, XRD, DSC, TPR, and SEM and the catalytic activity was measured in a microbalance. An important...

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Bibliographic Details
Published in:Industrial & engineering chemistry research 2003-02, Vol.42 (4), p.692-697
Main Authors: Carrascull, Alfredo L, Ponzi, Marta I, Ponzi, Esther N
Format: Article
Language:English
Subjects:
Air pollution caused by fuel industries
Applied sciences
Atmospheric pollution
Catalysis
Catalytic reactions
Chemistry
Combustion and energy production
Energy
Energy. Thermal use of fuels
Exact sciences and technology
General and physical chemistry
Pollution
Pollution reduction
Prevention and purification methods
Stack gas and industrial effluent processing
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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Summary:Co−KNO3−ZrO2 and Co−ZrO2 were prepared. The concentration effect of potassium nitrate on the activity was studied for the oxidation reaction of soot. Catalysts were characterized using the techniques BET, XRD, DSC, TPR, and SEM and the catalytic activity was measured in a microbalance. An important decrease of the combustion temperature of soot is observed in experiments carried out with zirconium oxide alone and also a significant enhancement of the catalytic combustion rate of soot on KNO3/ZrO2 catalysts. The activity increase can be attributed to the alkaline metal ion and also to the increase of the catalyst/soot contact by the molten potassium nitrate.
ISSN:0888-5885
1520-5045
DOI:10.1021/ie020482i