K-Mn supported on three-dimensionally ordered macroporous La0.8Ce0.2FeO3 catalysts for the catalytic combustion of soot

被引：69

作者：

Feng, Nengjie ^{[1
]}

Chen, Chong ^{[1
]}

Meng, Jie ^{[1
]}

Liu, Geng ^{[1
]}

Fang, Fan ^{[1
]}

Wang, Lei ^{[1
]}

Wan, Hui ^{[1
]}

Guan, Guofeng ^{[1
]}

机构：

[1] Nanjing Tech Univ, Jiangsu Natl Synerget Innovat Ctr Adv Mat, Coll Chem Engn, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Jiangsu, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2017年 / 399卷

关键词：

Three-dimensionally ordered macroporous; La0.8Ce0.2FeO3; perovskite; K-Mn composite oxide; Soot removal; DIESEL SOOT; GOLD NANOPARTICLES; MIXED OXIDES; PERFORMANCE; NOX; OXIDATION; REMOVAL; LAMNO3; PEROVSKITES; PARTICULATE;

D O I：

10.1016/j.apsusc.2016.12.066

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Three-dimensionally ordered macroporous (3DOM) La0.8Ce0.2FeO3 perovskite was successfully constructed through a colloidal crystal template way. And the K-Mn/3DOM La0.8Ce0.2FeO3 catalyst was obtained by an incipient-wetness impregnation method. The physicochemical characterizations of the material were conducted by means of XRD, FESEM, TEM, N-2 adsorption-desorption, H-2-TPR, XPS and O-2-TPD techniques, and the catalytic performance was evaluated for soot removal. The intact well-ordered macroporous skeleton was remained after K and Mn were loaded, which offered an ideal environment for soot combustion. The generated K2Mn4O8 was well decorated on the skeleton of the 3DOM perovskite, which could increase the concentration of surface oxygen species and enhance the reducibility of catalyst. The as-prepared catalyst exhibited good catalytic performance for soot removal, and could lower the T-50 of soot to 377 degrees C. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：114 / 122

页数：9

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