Citation:
BULGAN G., LIANG Shu-Hui, TENG Fei, YAO Wen-Qing, ZHU Yong-Fa. Effect of Ce Doping on the Structure and Catalytic Activity of La1-xCexCoO3 Catalysts[J]. Acta Physico-Chimica Sinica,
;2008, 24(02): 205-210.
doi:
10.3866/PKU.WHXB20080205
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La1-xCexCoO3 (x=0, 0.05, 0.1, 0.2, 0.3) catalysts were synthesized by amorphous heteronuclear complexing method. The catalysts were characterized by XRD, TEM, and N2 adsorption isotherms. The cataluminescence (CTL) response to CO and the activities in the oxidation of CO over the catalysts were investigated. Results showed that La1-xCeyφx-yCoO3 perovskite with lanthanumdeficiency, CeO2 and CO3O4 phases were formed after La3+ was substituted with Ce4+ in the catalyst. Compared with LaCoO3 catalyst, the catalyst with x=0.1 showed the highest activity for CO oxidation (T100%=290 ℃). The CTL result is well consistent with the order of CO catalytic activity over La1-xCexCoO3 catalysts.
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