Citation: WANG Hong, WANG Jun-Li, LI Cui-Qing, SONG Yong-Ji, CHI Yao-Ling, WANG Tao. Decomposition of N2O on ACo2O4/HZSM-5 Catalysts[J]. Acta Physico-Chimica Sinica, ;2010, 26(10): 2739-2744. doi: 10.3866/PKU.WHXB20100928 shu

Decomposition of N2O on ACo2O4/HZSM-5 Catalysts

  • Received Date: 13 April 2010
    Available Online: 27 September 2010

    Fund Project: 北京市教委科技计划(KM200910017002) (KM200910017002)北京市属高等学校人才强教计划(PHR200907129)资助项目 (PHR200907129)

  • ACo2O4(A=Mg, Ni, Zn)andACo2O4/HZSM-5 (A=Mg, Fe, Ni, Cu, Zn, Zr, La) catalysts were synthesized by the citric acid -ligated combustion method and by low -temperature complex impregnation, respectively. The catalysts were characterized by X-ray diffraction (XRD), ammonia temperature -programmed desorption (NH3-TPD), scanning electron microscopy (SEM), and energy dispersive X-ray microanalysis (EDS). The performance of the catalysts was evaluated with micro fixed bed reactor. The results showed that the catalytic activity was affected by the A-site ion, and when theA -site ion was Ni, Fe, Zr, or La, the catalysts had better catalytic activity and the temperature of N2O decomposition was lower. Compared with ACo2O4, the ACo2O4/HZSM -5 catalyst had better catalytic activity. ACo2O4 was present as ultrafine particles on the HZSM-5 zeolite and the ACo2O4/HZSM -5 catalyst had od acidity. All these factors are useful in improving the performance of these catalysts.

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