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Denghui Wang, Hui Li, Qi Yao, Shien Hui, Yanqing Niu. Assisting effect of Al2O3 on MnOx for NO catalytic oxidation. Green Energy&Environment, 2021, 6(6): 903-909. doi: 10.1016/j.gee.2020.07.005
Citation: Denghui Wang, Hui Li, Qi Yao, Shien Hui, Yanqing Niu. Assisting effect of Al2O3 on MnOx for NO catalytic oxidation. Green Energy&Environment, 2021, 6(6): 903-909. doi: 10.1016/j.gee.2020.07.005
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Assisting effect of Al2O3 on MnOx for NO catalytic oxidation

doi: 10.1016/j.gee.2020.07.005

  • State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, China

  • Received date 17 March 2020, Accepted date 07 July 2020, RevRecd date 23 June 2020, Publish date 31 December 2021,
    Abstract
  • Various Mn-based catalysts for NO oxidation were prepared using MnOx as active compound, while TiO2 and Al2O3 were adopted as catalyst support. The performance of the catalysts was tested to study the effect of support on Mn-based catalyst activity. Performance of the catalysts followed as Mn0.4/Al > Mn0.2/Al > Mn0.4/Ti > Mn0.2/Ti > MnOx > Al2O3 on the whole, indicating the synergism of MnOx and Al2O3 for NO catalytic oxidation. Results were analyzed according to characterization data. Adsorbed oxygen on catalyst rather than lattice oxygen was detected as the active oxidizer for NO oxidation. As catalyst support, Al2O3 provided more sites to carry surface adsorbed oxygen than TiO2, resulting in the presence of more active oxygen on MnOx/Al2O3 than on MnOx/TiO2. Moreover, MnOx/Al2O3 possessed high surface area and pore volume, which greatly benefited the adsorption of NO on catalyst and further favored the oxidation of NO by active oxygen. All these advantages helped Mn0.4/Al exhibited the best catalytic efficiency.

     

    • Current address: NO.28 Xianning West Road, Xi'an, 710049, China.
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