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Citation: SHAO Guang-Xin, LUO Lai-Tao, DUAN Zhan-Hui. Preparation, Catalytic Oxidation Properties and Characterization of LaSrCo_0.9B’_0.1O₄ (B’=Mn, Fe, Ni, Cu) Mixed Oxides[J]. Acta Physico-Chimica Sinica, ;2005, 21(03): 328-332. doi: 10.3866/PKU.WHXB20050321 shu

Preparation, Catalytic Oxidation Properties and Characterization of LaSrCo_0.9B’_0.1O₄ (B’=Mn, Fe, Ni, Cu) Mixed Oxides

1.
Institute of Applied Chemistry, Nanchang University, Nanchang　330047

Received Date: 30 July 2004
Available Online: 15 March 2005

A series of perovskite-like LaSrCo_0.9B’_0.1O₄ (B’=Mn、Fe、Ni、Cu) mixed oxides were synthesized by polyacrylamide gel method, and the catalytic activity for CO and C₃H₈ oxidation over these catalysts was investigated. The results show that the catalytic activity over LaSrCo_0.9Ni_0.1O₄ is the best. The 50％ and 100％ conversion temperatures of CO are 194 ℃ and 220 ℃, which are 14 ℃ and 10 ℃ lower than those over LaSrCoO₄ catalyst respectively; the 50％ and 100％ conversion temperatures of C₃H₈ are respectively 18 ℃ and 25 ℃ lower. The LaSrCo_0.9Ni_0.1O₄ and LaSrCoO₄ mixed oxides were investigated by using XRD, BET, TEM and TPD methods. The results of XRD indicate that both of the samples have tetra nal K₂NiF₄ structure, and the results of TEM suggest that they are nanostructured materials. B-site adulteration with nickel enhances the catalytic activity, the O₂-adsorption amount and the lattice distortion of LaSrCoO₄, while reduces the average crystal size on the same time.
- B-site adulteration; Catalytic oxidation; Co-based mixed oxides;　A₂BO₄
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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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Preparation, Catalytic Oxidation Properties and Characterization of LaSrCo0.9B’0.1O4 (B’=Mn, Fe, Ni, Cu) Mixed Oxides

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通讯作者: 陈斌, bchen63@163.com

Preparation, Catalytic Oxidation Properties and Characterization of LaSrCo_0.9B’_0.1O₄ (B’=Mn, Fe, Ni, Cu) Mixed Oxides