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Catalytic Combustion of Toluene on Cu-Mn Complex Oxides Prepared by Urea-Based Hydrothermal Method

Qian Yu, Jun Li, Gao Cheng, Li Si Shen, Yun Jia Wang, Lin Yu, Yongfeng Li

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Abstract

Catalytic combustion of toluene on Cu-Mn complex oxides was investigated. The catalysts were prepared by urea-based hydrothermal method and characterized by XRD and SEM. It was found that both the decrease of the Cu/Mn molar ratio and the increase of reaction time contributed to improving catalytic activity for toluene combustion. The temperature for 99% conversion of toluene (T99) was lowered to 210°C. The main crystalline phases of Cu-Mn complex oxides were CuO and Cu0.45Mn0.55O2. It was showed that the existence and high dispersion of Cu-Mn complex oxides were related to the catalytic combustion activity.

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Catalytic combustion of toluene on Cu-Mn complex oxides was investigated. The catalysts were prepared by urea-based hydrothermal method and characterized by XRD and SEM. It was found that both the decrease of the Cu/Mn molar ratio and the increase of reaction time contributed to improving catalytic activity for toluene combustion. The temperature for 99% conversion of toluene (T99) was lowered to 210°C. The main crystalline phases of Cu-Mn complex oxides were CuO and Cu0.45Mn0.55O2. It was showed that the existence and high dispersion of Cu-Mn complex oxides were related to the catalytic combustion activity.

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Available abstract

Catalytic combustion of toluene on Cu-Mn complex oxides was investigated. The catalysts were prepared by urea-based hydrothermal method and characterized by XRD and SEM. It was found that both the decrease of the Cu/Mn molar ratio and the increase of reaction time contributed to improving catalytic activity for toluene combustion. The temperature for 99% conversion of toluene (T99) was lowered to 210°C. The main crystalline phases of Cu-Mn complex oxides were CuO and Cu0.45Mn0.55O2. It was showed that the existence and high dispersion of Cu-Mn complex oxides were related to the catalytic combustion activity.

Key concepts: Toluene, Catalysis, Catalytic combustion, Combustion, Urea, Hydrothermal circulation, Dispersion (optics), Molar ratio

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