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Citation: SHEN Bo-xiong, CHEN Jian-hong, YAO Yan, HU Guo-li. Effects of alkali metals on catalyst of MnOx-CeO2/ZrO2-PILC in the low-temperature selective catalytic reduction[J]. Journal of Fuel Chemistry and Technology, ;2012, 40(12): 1487-1491. shu

Effects of alkali metals on catalyst of MnOx-CeO2/ZrO2-PILC in the low-temperature selective catalytic reduction

  • 1.

    College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China

  • Corresponding author: SHEN Bo-xiong, 
  • Received Date: 8 February 2012
    Available Online: 28 May 2012

    Fund Project: 国家自然科学基金(51176077,50976050) (51176077,50976050) 天津市自然科学基金(12JCZDJC29300) (12JCZDJC29300) 环保公益性行业科研专项经费(201109004)。 (201109004)

  • The poisoning effects of alkali metals on low-temperature selective catalytic reduction (SCR) catalyst MnOx-CeO2/ZrO2-PILC were invested by the method of impregnation in the laboratory. It was indicated that the addition of Ca/Mg would decrease the activities of the catalyst, and the poisoning effects were contacted with the amount and acidity of the doped-alkali metal. X-ray diffraction (XRD), H2-temperature programmed reduction (H2-TPR), N2 adsorption-desorption and temperature-programmed desorption of NH3 (NH3-TPD) were used to characterize the properties of the fresh and alkali earth doped catalysts. According to the results, the doped-alkali metals would inhibit the reduction properties, induce the loss in surface area and surface acidity.
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