Three-Dimensionally Ordered Macroporous Soot Combustion Perovskite Catalysts

Three-Dimensionally Ordered Macroporous Soot Combustion Perovskite Catalysts 

As it is deduced from data compiled in Table 19.1, one of the properties that limit the activity of perovskite catalysts for soot combustion is their very low surface area, with BET values typically lower than 25 m /g. Well-ordered perovskite nanocrystals have not been reported and, therefore, areas are usually low. The positive consequence of the formation of large perovskite crystals is the high thermal stability usually attributed to soot combustion perovskite catalysts. 

Recently, several three-dimensionally ordered macroporous (3DOM) solids have been investigated as soot combustion catalysts, some of them based on perovskite structures, and this approach could be a solution for the low siuface 

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Zheng, J., Liu, J., Zhao, Z., Xu, J., Duan, A., and Jiang, G. (2012) The synthesis and catalytic performances of three-dimensionally ordered macroporous perovskite-type LaMni- Fe Oa complex oxide catalysts with different pore diameters for diesel soot combustion. Catal Today, 191,146-153. 

Three-dimensionally ordered macroporous LaCo Fei 03 perovskite-type complex oxide catalysts for diesel soot combustion. Catal. Today, 153, 136-142. 

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