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Citation: Yao Rulin, Dai Zixin, Li Dongsheng, Zheng Jiandong. Syntheses of LaCo_xFe_1-xO₃ Catalysts by using Carbon Microspheres as Template and Investigation on Their Catalytic Activities of Methane Combustion[J]. Chemistry, ;2017, 80(1): 108-111. shu

Syntheses of LaCo_xFe_1-xO₃ Catalysts by using Carbon Microspheres as Template and Investigation on Their Catalytic Activities of Methane Combustion

College of Material and Chemical Engineering, Chuzhou University, Chuzhou 239000

Corresponding author: Zheng Jiandong, zjd071@126.com
Received Date: 4 June 2016
Accepted Date: 26 August 2016

Figures(5)

Carbon microspheres prepared by hydrothermal method were used as template to prepare LaCo_xFe_1-xO₃ (x=0.1, 0.2, 0.3, 0.6, 0.9) catalysts. As-prepared catalysts were characterized by XRD, BET, H₂-TPR and SEM techniques, and their catalytic activities for methane combustion were evaluated. With carbon microspheres as template and doped with different proportion of Co²⁺, a complete perovskite crystal was formed after calcining at 400℃ and 700℃. The specific surface area of catalysts increased gradually with increasing doping amount of Co²⁺. The structure and catalytic activities are also different while altering the doping amount of Co²⁺. The catalyst LaCo_0.2Fe_0.8O₃ shows an excellent catalytic activity for methane combustion, the conversion rates of 10% and 90% are obtained at 448℃ and 640℃, respectively.
- Carbon microspheres,
- Perovskite,
- Methane catalytic combustion
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