Research on K-V-rare Earth Metal Catalysts for Diesel Soot Oxidation
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2018年第2期
论文作者：王永涛 隋丽娜 KANG Hongquan YU Liyan
文章页码：331 - 337
摘 要：Five types of KNO3-NH4VO3-rare earth metal nitrate（K-V-rare earth metal） catalysts supported on a-porous alumina ceramic substrates were prepared by a coating method. All the catalysts were characterized by X-ray diffraction and thermogravimetry/differential scanning calorimetry. Catalytic activities were evaluated by a soot oxidation reaction using a temperature-programmed reaction system. The experimental results show that the addition of rare earth metal compound could obviously improve the catalytic activities of the K-V-based catalysts. The proper ratio of K-V-rare earth metal catalysts can not only lower the soot onset ignition temperature, but also quicken the soot oxidation rate. The crystalline phases formed by K, V, and rare earth metal are stable.
王永涛，隋丽娜，KANG Hongquan，YU Liyan
College of Materials Science and Engineering,Qingdao University of Science and Technology
摘 要：Five types of KNO3-NH4VO3-rare earth metal nitrate（K-V-rare earth metal） catalysts supported on a-porous alumina ceramic substrates were prepared by a coating method. All the catalysts were characterized by X-ray diffraction and thermogravimetry/differential scanning calorimetry. Catalytic activities were evaluated by a soot oxidation reaction using a temperature-programmed reaction system. The experimental results show that the addition of rare earth metal compound could obviously improve the catalytic activities of the K-V-based catalysts. The proper ratio of K-V-rare earth metal catalysts can not only lower the soot onset ignition temperature, but also quicken the soot oxidation rate. The crystalline phases formed by K, V, and rare earth metal are stable.
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