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
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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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