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Citation: BULGAN G., TENG Fei, LIANG Shu-Hui, YAO Wen-Qing, ZHU Yong-Fa. Effect of Cu Doping on the Structure and Catalytic Activity of LaMnO₃ Catalyst[J]. Acta Physico-Chimica Sinica, ;2007, 23(09): 1387-1392. doi: 10.3866/PKU.WHXB20070915 shu

Effect of Cu Doping on the Structure and Catalytic Activity of LaMnO₃ Catalyst

1.
Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China

Received Date: 26 February 2007
Available Online: 2 July 2007

La1-xCuxMnO3 (x=0, 0.05, 0.1, 0.2, 0.3, 0.4, 0.5) catalysts were synthesized by amorphous heteronuclear complexingmethod. The catalystswere characterized by XRD, TEM, andN2 adsorption isotherms. The cataluminescence (CTL) response to CO and the activities in the oxidation of CO and CH4 over the catalysts were investigated. XRD analysis indicated that the single-phase perovskite crystals were formed at x≤0.1, but perovskite and CuO phases coexisted at x>0.1. The catalytic activities of La1-xCuxMnO3 catalysts were superior to those of LaMnO3 catalysts for CO oxidation. La0.9Cu0.1MnO3 (calcined at 700 ℃ for 3 h) catalyst showed the highest catalytic activity for CO oxidation (T100%= 170 ℃), which agreed well with the cataluminescence results. However, La0.95Cu0.05MnO3 catalyst showed the highest catalytic activity for CH4 oxidation (T95%=705 ℃).
- Amorphous heteronuclear complex; Perovskite; Catalyst; Cu dopant; Cataluminescence; CO; CH4
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沈阳化工大学材料科学与工程学院沈阳 110142

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Effect of Cu Doping on the Structure and Catalytic Activity of LaMnO3 Catalyst

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通讯作者: 陈斌, bchen63@163.com

Effect of Cu Doping on the Structure and Catalytic Activity of LaMnO₃ Catalyst