Facile synthesis of three-dimensionally ordered macroporous silicon-doped La0.8K0.2CoO3 perovskite catalysts for soot combustion

Nengjie Feng; Chong Chen; Jie Meng; Yang Wu; Geng Liu; Lei Wang; Hui Wan; Guofeng Guan

doi:10.1039/c6cy00677a

Facile synthesis of three-dimensionally ordered macroporous silicon-doped La_0.8K_0.2CoO₃ perovskite catalysts for soot combustion

Nengjie Feng, Chong Chen, Jie Meng, Yang Wu, Geng Liu, Lei Wang, Hui Wan, Guofeng Guan

College of Chemical Engineering

Nanjing Tech University

Research output: Contribution to journal › Article › peer-review

40 Scopus citations

Abstract

Three-dimensionally ordered macroporous (3DOM) silicon-doped La_0.8K_0.2CoO₃ perovskite catalysts were prepared by a colloidal crystal templating method. The as-prepared samples were characterized by XRD, FT-IR, FESEM, N₂ adsorption-desorption, XRF, XPS and H₂-TPR techniques to investigate the physical-chemical properties of the catalysts. The silica sol added into the perovskite precursor solution could be solidified at a relatively low temperature, which prevented the 3DOM structure from collapsing during calcination. Meanwhile, the specific surface areas and redox abilities of the catalysts could also be enhanced. The catalytic performance for soot combustion was evaluated in a temperature programmed oxidation device using NO/O₂ as an oxidant. Among all the as-prepared catalysts, 3DOM La_0.8K_0.2CoO₃ perovskite doped with 5.89 wt% Si (3DOM LKC-S2) exhibited the best catalytic performance for soot removal.

Original language	English
Pages (from-to)	7718-7728
Number of pages	11
Journal	Catalysis Science and Technology
Volume	6
Issue number	21
DOIs	https://doi.org/10.1039/c6cy00677a
State	Published - 2016

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title = "Facile synthesis of three-dimensionally ordered macroporous silicon-doped La0.8K0.2CoO3 perovskite catalysts for soot combustion",

abstract = "Three-dimensionally ordered macroporous (3DOM) silicon-doped La0.8K0.2CoO3 perovskite catalysts were prepared by a colloidal crystal templating method. The as-prepared samples were characterized by XRD, FT-IR, FESEM, N2 adsorption-desorption, XRF, XPS and H2-TPR techniques to investigate the physical-chemical properties of the catalysts. The silica sol added into the perovskite precursor solution could be solidified at a relatively low temperature, which prevented the 3DOM structure from collapsing during calcination. Meanwhile, the specific surface areas and redox abilities of the catalysts could also be enhanced. The catalytic performance for soot combustion was evaluated in a temperature programmed oxidation device using NO/O2 as an oxidant. Among all the as-prepared catalysts, 3DOM La0.8K0.2CoO3 perovskite doped with 5.89 wt% Si (3DOM LKC-S2) exhibited the best catalytic performance for soot removal.",

author = "Nengjie Feng and Chong Chen and Jie Meng and Yang Wu and Geng Liu and Lei Wang and Hui Wan and Guofeng Guan",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry 2016.",

year = "2016",

doi = "10.1039/c6cy00677a",

language = "英语",

volume = "6",

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T1 - Facile synthesis of three-dimensionally ordered macroporous silicon-doped La0.8K0.2CoO3 perovskite catalysts for soot combustion

AU - Feng, Nengjie

AU - Chen, Chong

AU - Meng, Jie

AU - Wu, Yang

AU - Liu, Geng

AU - Wang, Lei

AU - Wan, Hui

AU - Guan, Guofeng

PY - 2016

Y1 - 2016

N2 - Three-dimensionally ordered macroporous (3DOM) silicon-doped La0.8K0.2CoO3 perovskite catalysts were prepared by a colloidal crystal templating method. The as-prepared samples were characterized by XRD, FT-IR, FESEM, N2 adsorption-desorption, XRF, XPS and H2-TPR techniques to investigate the physical-chemical properties of the catalysts. The silica sol added into the perovskite precursor solution could be solidified at a relatively low temperature, which prevented the 3DOM structure from collapsing during calcination. Meanwhile, the specific surface areas and redox abilities of the catalysts could also be enhanced. The catalytic performance for soot combustion was evaluated in a temperature programmed oxidation device using NO/O2 as an oxidant. Among all the as-prepared catalysts, 3DOM La0.8K0.2CoO3 perovskite doped with 5.89 wt% Si (3DOM LKC-S2) exhibited the best catalytic performance for soot removal.

AB - Three-dimensionally ordered macroporous (3DOM) silicon-doped La0.8K0.2CoO3 perovskite catalysts were prepared by a colloidal crystal templating method. The as-prepared samples were characterized by XRD, FT-IR, FESEM, N2 adsorption-desorption, XRF, XPS and H2-TPR techniques to investigate the physical-chemical properties of the catalysts. The silica sol added into the perovskite precursor solution could be solidified at a relatively low temperature, which prevented the 3DOM structure from collapsing during calcination. Meanwhile, the specific surface areas and redox abilities of the catalysts could also be enhanced. The catalytic performance for soot combustion was evaluated in a temperature programmed oxidation device using NO/O2 as an oxidant. Among all the as-prepared catalysts, 3DOM La0.8K0.2CoO3 perovskite doped with 5.89 wt% Si (3DOM LKC-S2) exhibited the best catalytic performance for soot removal.

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U2 - 10.1039/c6cy00677a

DO - 10.1039/c6cy00677a

M3 - 文章

AN - SCOPUS:84992734350

SN - 2044-4753

VL - 6

SP - 7718

EP - 7728

JO - Catalysis Science and Technology

JF - Catalysis Science and Technology

IS - 21

ER -

Facile synthesis of three-dimensionally ordered macroporous silicon-doped La_0.8K_0.2CoO₃ perovskite catalysts for soot combustion

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