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
收藏
页码：114 / 122
页数：9
相关论文
共 61 条
[1]   Shape-Dependent Activity of Ceria in Soot Combustion [J].
Aneggi, Eleonora ;
Wiater, Dawid ;
de Leitenburg, Carla ;
Llorca, Jordi ;
Trovarelli, Alessandro .
ACS CATALYSIS, 2014, 4 (01) :172-181
[2]   Activity and stability of BaKCo/CeO2 catalysts for diesel soot oxidation [J].
Ariela Peralta, Maria ;
Soledad Zanuttini, Maria ;
Alberto Querini, Carlos .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2011, 110 :90-98
[3]   Pre-DPF water injection technique for pressure drop control in loaded wall-flow diesel particulate filters [J].
Bermudez, V. ;
Serrano, J. R. ;
Piqueras, P. ;
Garcia-Afonso, O. .
APPLIED ENERGY, 2015, 140 :234-245
[4]   Diesel soot combustion ceria catalysts [J].
Bueno-Lopez, A. .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2014, 146 :1-11
[5]   Gravity-Driven Multiple Collision-Enhanced Catalytic Soot Combustion over a Space-Open Array Catalyst Consisting of Ultrathin Ceria Nanobelts [J].
Cao, Chunmei ;
Zhang, Yuxia ;
Liu, Dongsheng ;
Meng, Ming .
SMALL, 2015, 11 (30) :3659-3664
[6]   Enhanced activity for catalytic oxidation of 1,2-dichloroethane over Al-substituted LaMnO3 perovskite catalysts [J].
Chen, Shu-Xia ;
Wang, Yu ;
Jia, Ai-Ping ;
Liu, Huan-Huan ;
Luo, Meng-Fei ;
Lu, Ji-Qing .
APPLIED SURFACE SCIENCE, 2014, 307 :178-188
[7]   Gadolinium doped cerium oxide for soot oxidation: Influence of interfacial metal-support interactions [J].
Durgasri, D. Naga ;
Vinodkumar, T. ;
Lin, Fangjian ;
Alxneit, Ivo ;
Reddy, Benjaram M. .
APPLIED SURFACE SCIENCE, 2014, 314 :592-598
[8]   Catalytic removal of diesel soot particulates over K and Mg substituted La1 - xKxCo1 - yMgyO3 perovskite oxides [J].
Fang, Shuqing ;
Wang, Lei ;
Sun, Zhichuan ;
Feng, Nengjie ;
Shen, Chen ;
Lin, Peng ;
Wan, Hui ;
Guan, Guofeng .
CATALYSIS COMMUNICATIONS, 2014, 49 :15-19
[9]   KNO3 supported on three-dimensionally ordered macroporous La0.8Ce0.2Mn1-xFexO3 for soot removal [J].
Feng, Nengjie ;
Meng, Jie ;
Wu, Yang ;
Chen, Chong ;
Wang, Lei ;
Gao, Lu ;
Wan, Hui ;
Guan, Guofeng .
CATALYSIS SCIENCE & TECHNOLOGY, 2016, 6 (09) :2930-2941
[10]   Catalytic combustion of soot over Ce and Co substituted three-dimensionally ordered macroporous La1-xCexFe1-yCoyO3 perovskite catalysts [J].
Feng, Nengjie ;
Wu, Yang ;
Meng, Jie ;
Chen, Chong ;
Wang, Lei ;
Wan, Hui ;
Guan, Guofeng .
RSC ADVANCES, 2015, 5 (111) :91609-91618
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