TY - JOUR
T1 - K–Mn supported on three-dimensionally ordered macroporous La 0.8 Ce 0.2 FeO 3 catalysts for the catalytic combustion of soot
AU - Feng, Nengjie
AU - Chen, Chong
AU - Meng, Jie
AU - Liu, Geng
AU - Fang, Fan
AU - Wang, Lei
AU - Wan, Hui
AU - Guan, Guofeng
N1 - Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2017/3/31
Y1 - 2017/3/31
N2 - Three-dimensionally ordered macroporous (3DOM) La 0.8 Ce 0.2 FeO 3 perovskite was successfully constructed through a colloidal crystal template way. And the K–Mn/3DOM La 0.8 Ce 0.2 FeO 3 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 K 2 Mn 4 O 8 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 °C.
AB - Three-dimensionally ordered macroporous (3DOM) La 0.8 Ce 0.2 FeO 3 perovskite was successfully constructed through a colloidal crystal template way. And the K–Mn/3DOM La 0.8 Ce 0.2 FeO 3 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 K 2 Mn 4 O 8 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 °C.
KW - K–Mn composite oxide
KW - La Ce FeO perovskite
KW - Soot removal
KW - Three-dimensionally ordered macroporous
UR - http://www.scopus.com/inward/record.url?scp=85006333174&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2016.12.066
DO - 10.1016/j.apsusc.2016.12.066
M3 - 文章
AN - SCOPUS:85006333174
SN - 0169-4332
VL - 399
SP - 114
EP - 122
JO - Applied Surface Science
JF - Applied Surface Science
ER -