Catalytic properties of La0.8Sr0.2Co0.5M0.5O3 (M Co, Ni, Cu) in methane combustion1 |
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| Authors: | Wu Yue-hui Luo Lai-tao Liu Wei |
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| Institution: | 1. Department of Materials Chemistry, Nanchang Hangkong University, Jiangxi Nanchang, 330063, China
2. Institute of Applied Chemistry, Nanchang University, Jiangxi Nanchang, 330031, China
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| Abstract: | A set of perovskite-type catalysts of general formula La0.8Sr0.2Co0.5M0.5O3 (M = Co, Ni, Cu) were prepared by alanine solution combustion method and used successfully for the methane combustion. The property of these materials were characterized by XRD, and TPR measurements. The effects of transition-metal ions on site B on structure and performance of the catalysts were studied. The result indicated that the structure and catalytic activities of the catalysts can remarkably affect by transition-metal ions on site B, the decrease of the electrons filled in d orbitals in the atom on site B is propitious to increase the catalytic activity for methane combustion, and the sequences of catalysts activities are La0.8Sr0.2CoO3 τ; Ce0.8Sr0.2CoO3 τ; Nd0.8Sr0.2CoO3. |
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