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Citation: Fang Wang, Hongxing Dai, Jiguang Deng, Shaohua Xie, Huanggen Yang, Wen Han. Nanoplate-aggregate Co3O4 microspheres for toluene combustion[J]. Chinese Journal of Catalysis, ;2014, 35(9): 1475-1481. doi: 10.1016/S1872-2067(14)60072-3 shu

Nanoplate-aggregate Co3O4 microspheres for toluene combustion

  • 1.

    Key Laboratory of Beijing on Regional Air Pollution Control and Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China

  • Corresponding author: Hongxing Dai, 
  • Received Date: 28 January 2014
    Available Online: 3 March 2014

    Fund Project:

  • Nanoplate-aggregate microspherical Co3O4 was prepared by an ethylenediamine-assisted hydrothermal route and characterized by means of numerous techniques. Their catalytic activities for toluene combustion were evaluated. The Co3O4 sample obtained using 1.0 ml of ethylenediamine and a hydrothermal treatment at 140 ℃ for 12 h had a nanoplate-aggregate microspherical morphology. This microspherical Co3O4 sample with a surface area of 66 m2 g-1 had a higher adsorbed oxygen concentration and better low-temperature reducibility than bulk Co3O4. Over the Co3O4 microsphere sample, the temperatures required for 50% and 90% toluene conversions were 230 and 254 ℃, respectively, at a space velocity of 20000 ml g-1 h-1. The good catalytic performance of the Co3O4 microsphere sample was related to its large surface area, high oxygen adspecies concentration, and good low-temperature reducibility.
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