每周分享：Three-dimensionally ordered macroporous spinel-type MCr₂O₄ (M = Co, Ni, Zn, Mn) catalysts with highly enhanced catalytic performance for soot combustion

今天給大家分享的是2015年5月份《Catalysis Science & Technology》上發(fā)表的一篇名為：Three-dimensionally ordered macroporous spinel-type MCr₂O₄ (M = Co, Ni, Zn, Mn) catalysts with highly enhanced catalytic performance for soot combustion

文章摘要如下：

Three-dimensionally ordered macroporous (3DOM) spinel-type MCr₂O₄ (M = Co, Ni, Zn, Mn) catalysts were successfully prepared by a colloidal crystal template strategy and characterized by means of XRD, FE-SEM, BET, FT-IR, H₂-TPR and O₂-TPD. The 3DOM catalysts exhibited superior activity to their corresponding bulk counterparts, which were used as reference benchmarks in this study, due to the enlarged contact between the catalyst and the soot particle and improved mass transfer caused by the unique well-defined 3DOM structures. Meanwhile, the factors influencing the catalytic activity of the 3DOM catalysts in soot combustion were also optimized, such as metallic cations and feed compositions. Furthermore, the 3DOM catalysts displayed strong durability against structural collapse due to the robust 3DOM structure, demonstrating their promising potential in view of the practical working conditions of diesel engines..該文章中材料表征采用的是美國(guó)麥克儀器ASAP 2460

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