Catalytic oxidation of benzene at low temperature over novel combination of metal oxide based catalysts: CuO,MnO2, NiO with Ce0.75Zr0.25O2 as support |
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Authors: | IC Sophiana A Topandi F Iskandar H Devianto N Nishiyama YW Budhi |
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Institution: | 1. Department of Chemical Engineering, Faculty of Industrial Technology, Institut Teknologi Bandung, Bandung, 40132, Indonesia;2. Department of Physics, Faculty of Mathematics and Natural Science, Institut Teknologi Bandung, Bandung, 40132, Indonesia;3. Research Center for Nanoscience and Nanotechnology, Institut Teknologi Bandung, Bandung, 40132, Indonesia;4. Department of Chemical Engineering, Engineering Science School, Osaka University, Osaka, 565-0871, Japan |
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Abstract: | Mesoporous Ce0.75Zr0.25O2 solid solution powders were successfully synthesized by a co-precipitation method. A combination of 10 wt% copper oxide, manganese oxide, and nickel oxide was added to the Ce0.75Zr0.25O2 support by impregnation method and calcined in the air with a flow rate of 2 ml s?1 at 400 °C for 4 h. All catalysts were characterized using Hydrogen Temperature Programmed Reduction (H2-TPR), X-ray Diffraction (XRD), and Brunauer-Emmet-Teller (BET) isotherm methods to find the interaction between metals, the crystallinity of the catalyst, surface area and pore volume of the catalyst, respectively. The 3.3% CuO-3.3% MnO2-3.3% NiO/Ce0.75Zr0.25O2 catalyst showed higher catalytic activity for benzene oxidation with benzene conversion of 90% at 250 °C and weight hourly space velocity (72,000 mL g?1 h?1) when compared to one metal oxide only. This finding presents a high activity and low-cost catalysts for removing a very lean concentration of benzene containing in the industrial flue gas at low temperatures. |
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Keywords: | VOC Combustion Metal oxide Catalyst Ceria-zirconia |
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