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Citation: HU Chun-Guo, ZHAO Zhen-Bo, XIAO De-Hai, LI Jing, YANG Xiang-Guang. Preparation,Characterization of La_1-xSr_xMnO₃ Perovskites and Their Total Catalytic Combustion of Benzene[J]. Chinese Journal of Applied Chemistry, ;2009, 26(1): 11-14. shu

Preparation,Characterization of La_1-xSr_xMnO₃ Perovskites and Their Total Catalytic Combustion of Benzene

1.
a Changchun University of Technology, Changchun;
2.
b Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022

Corresponding author: YANG Xiang-Guang,
Received Date: 6 December 2007
Available Online: 5 February 2008
Fund Project: 国家自然科学基金(20177022) (20177022)国家重点基础研究发展计划(2004CB719502)资助项目 (2004CB719502)

Perovskite-type oxides La_1-xSr_xMnO₃(x=0,0.1,0.2,0.3,0.4,0.5,0.7 and 0.9) were synthesized by the citric method and used for total catalytic combustion of benzene.They were characterized by means of XRD,O₂-TPD and H₂-TPR,and it was found that oxygen vacancy was not present in La_1-xSr_xMnO₃ with Sr doping,and the valence of Mn was increased with Sr doping.The redox properties of La_1-xSr_xMnO₃ have been improved by Sr doping,but the redox of Mn⁴⁺ would be limited by the further increase of Sr content.The La_1-xSr_xMnO₃ oxides showed higher activity in total combustion of benzene,and La_1-xSr_xMnO₃ oxides exhibited the best properties when x=0.2~0.3.
- benzene,
- total combustion,
- perovskite-type oxide
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Preparation,Characterization of La1-xSrxMnO3 Perovskites and Their Total Catalytic Combustion of Benzene

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通讯作者: 陈斌, bchen63@163.com

Preparation,Characterization of La_1-xSr_xMnO₃ Perovskites and Their Total Catalytic Combustion of Benzene