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A highly efficient and porous catalyst for simultaneous removal of NOx and diesel soot

机译:同时去除NOx和柴油烟灰的高效多孔催化剂

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摘要

A highly efficient and porous catalyst(La_(0.8)K_(0.2)Cu_(0.05)Mn_(0.95)O_3)for simultaneous removal of nitrogen oxides(NOx)and diesel soot was synthesized and the sample was characterized by XRD,BET,SEM-EDS,XRF,and XPS.The results indicate that this catalyst is perovskite and it possesses the very good characteristics for multiphase catalytic reactions.The catalytic properties were appraised under simulated diesel engine exhaust by temperature programmed reaction(TPR).TPR results indicate that this catalyst is a promising candidate for simultaneous removal of NOx and diesel soot.The maximum NO conversion into N_2 and the ignition temperature of soot are 54.8% and 260 deg C,respectively.Comparing with those in previous reports,the comprehensive performance of this catalyst is greatly improved by partial substitution of La with K and Mn with Cu at the same time.
机译:合成了一种高效多孔催化剂(La_(0.8)K_(0.2)Cu_(0.05)Mn_(0.95)O_3),用于同时去除氮氧化物(NOx)和柴油机烟灰,并通过XRD,BET,SEM对样品进行了表征。结果表明该催化剂为钙钛矿型,具有良好的多相催化反应特性。在模拟柴油机排气条件下,通过程序升温反应(TPR)对催化剂的催化性能进行了评价。该催化剂是同时去除NOx和柴油机烟灰的有希望的候选物。最大转化成N_2的NO和烟灰的着火温度分别为54.8%和260℃。与以前的报道相比,该催化剂的综合性能通过同时用La和K分别置换La和Mn,大大改善了碳纳米管。

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