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Complete Toluene Oxidation on Pt/CeO2-ZrO2-ZnO Catalysts
Department of Applied Chemistry, Faculty of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
* Author to whom correspondence should be addressed.
Received: 25 May 2013; in revised form: 10 July 2013 / Accepted: 26 July 2013 / Published: 2 August 2013
Abstract: A 0.4 wt%Pt/Ce0.76Zr0.19Zn0.05O1.95 catalyst was prepared by the evaporative drying method. The catalytic toluene oxidation activity of the catalyst was investigated and the calcination temperature dependence on the toluene oxidation activity was characterized. It was confirmed that only CO2 and steam were produced by the complete oxidation of toluene, and no toluene-derived compounds were detected as by-products with a gas chromatography-mass spectrometer. Toluene was completely oxidized at 320 °C on the 0.4 wt%Pt/Ce0.76Zr0.19Zn0.05O1.95 catalyst calcined at 500 °C. The toluene oxidation activity slightly decreased with increasing the calcination temperature of the catalyst. However, significant deactivation was not recognized in the present 0.4 wt%Pt/Ce0.76Zr0.19Zn0.05O1.95 catalyst, and toluene was completely oxidized at 360 °C even after calcination at 1000 °C. From these results, it became obvious that the 0.4 wt%Pt/Ce0.76Zr0.19Zn0.05O1.95 catalyst has high thermal stability for toluene oxidation activity.
Keywords: volatile organic compounds; toluene; catalytic combustion; rare earth oxide; thermal stability
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Kim, M.Y.; Kamata, T.; Masui, T.; Imanaka, N. Complete Toluene Oxidation on Pt/CeO2-ZrO2-ZnO Catalysts. Catalysts 2013, 3, 646-655.
Kim MY, Kamata T, Masui T, Imanaka N. Complete Toluene Oxidation on Pt/CeO2-ZrO2-ZnO Catalysts. Catalysts. 2013; 3(3):646-655.
Kim, Min Y.; Kamata, Tomoya; Masui, Toshiyuki; Imanaka, Nobuhito. 2013. "Complete Toluene Oxidation on Pt/CeO2-ZrO2-ZnO Catalysts." Catalysts 3, no. 3: 646-655.