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Chemcial Industry and Engineering 2016, Vol. 33 Issue (6) :1-7    DOI: 10.13353/j.issn.1004.9533.20151081
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Synthesis of Three-Dimensionally Ordered Macroporous Perovskite-Type La0.7Sr0.3CoO3Catalyst and Its Performance for NOx Storage Reduction
Li Xingang, Bo Ling, Ding Quan, Yan Huizhen, Jin Fengming
School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovation Center of Science and Engineering, Tianjin 300072, China

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Abstract 

Three-Dimensionally ordered macroporous(3DOM) La0.7Sr0.3CoO3 perovskite-type oxide was synthesized using polymethyl methacrylate (PMMA) colloidal crystal templating method. The effect of the self-assembly method on the structure of the PMMA template was also studied. A centrifugation technique was considered as the optimal preparation method. The concentration of the precursor solution was the major factor to affect the prepared 3DOM perovskite. The formation of the 3DOM La0.7Sr0.3CoO3 was confirmed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The H2 temperature-programmed-reduction (H2-TPR) results show that the perovskite became more stable after forming the 3DOM structure.Our results show that this 3DOM La0.7Sr0.3CoO3 perovskite present the good NOx storage and reduction (NSR) catalytic performance.

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Articles by authors
Li Xingang
Bo Ling
Ding Quan
Yan Huizhen
Jin Fengming
Keywordsperovskite;   3DOM;   NOx   storage and reduction;   lean-burn     
Received 2015-05-09;
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Li Xingang, Bo Ling, Ding Quan, Yan Huizhen, Jin Fengming.Synthesis of Three-Dimensionally Ordered Macroporous Perovskite-Type La0.7Sr0.3CoO3Catalyst and Its Performance for NOx Storage Reduction[J]  Chemcial Industry and Engineering, 2016,V33(6): 1-7
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