Catalytic removal of diesel soot particulates over K and Mg substituted La1 - XKxCo1 - yMgyO3 perovskite oxides

Shuqing Fang; Lei Wang; Zhichuan Sun; Nengjie Feng; Chen Shen; Peng Lin; Hui Wan; Guofeng Guan

doi:10.1016/j.catcom.2014.01.029

Catalytic removal of diesel soot particulates over K and Mg substituted La_{1 - X}K_xCo_{1 - y}Mg_yO₃ perovskite oxides

Shuqing Fang, Lei Wang, Zhichuan Sun, Nengjie Feng, Chen Shen, Peng Lin, Hui Wan, Guofeng Guan

COLLEGE OF CHEMICAL ENGINEERING

Nanjing Tech University

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

42 Scopus citations

Abstract

K and Mg substituted perovskite catalysts La_{1 - x}K _xCo_{1 - y}Mg_yO₃ (x = 0-0.4, y = 0-0.2) for soot combustion were prepared by citric acid complexation and characterized by XRD, FT-IR, SEM, TEM, EDS, H₂-TPR, XPS and TG. Soot combustion was remarkably accelerated when K was introduced into LaCoO₃. Then Mg was doped into the K substituted LaCoO₃, soot combustion was further improved for the restrained growth of Co₃O₄ phase. K/Mg substitutions were responsible for enhancing activity of catalysts by improving reducibility as suggested by H₂-TPR studies. Among all the catalysts, La_0.6K_0.4Co_0.9Mg_0.1O₃ exhibited the highest activity.

Original language	English
Pages (from-to)	15-19
Number of pages	5
Journal	Catalysis Communications
Volume	49
DOIs	https://doi.org/10.1016/j.catcom.2014.01.029
State	Published - 5 Apr 2014

Keywords

K
Mg
Perovskite
Soot combustion
Substitution

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10.1016/j.catcom.2014.01.029

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title = "Catalytic removal of diesel soot particulates over K and Mg substituted La1 - XKxCo1 - yMgyO3 perovskite oxides",

abstract = "K and Mg substituted perovskite catalysts La1 - xK xCo1 - yMgyO3 (x = 0-0.4, y = 0-0.2) for soot combustion were prepared by citric acid complexation and characterized by XRD, FT-IR, SEM, TEM, EDS, H2-TPR, XPS and TG. Soot combustion was remarkably accelerated when K was introduced into LaCoO3. Then Mg was doped into the K substituted LaCoO3, soot combustion was further improved for the restrained growth of Co3O4 phase. K/Mg substitutions were responsible for enhancing activity of catalysts by improving reducibility as suggested by H2-TPR studies. Among all the catalysts, La0.6K0.4Co0.9Mg0.1O3 exhibited the highest activity.",

keywords = "K, Mg, Perovskite, Soot combustion, Substitution",

author = "Shuqing Fang and Lei Wang and Zhichuan Sun and Nengjie Feng and Chen Shen and Peng Lin and Hui Wan and Guofeng Guan",

year = "2014",

month = apr,

day = "5",

doi = "10.1016/j.catcom.2014.01.029",

language = "英语",

volume = "49",

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T1 - Catalytic removal of diesel soot particulates over K and Mg substituted La1 - XKxCo1 - yMgyO3 perovskite oxides

AU - Fang, Shuqing

AU - Wang, Lei

AU - Sun, Zhichuan

AU - Feng, Nengjie

AU - Shen, Chen

AU - Lin, Peng

AU - Wan, Hui

AU - Guan, Guofeng

PY - 2014/4/5

Y1 - 2014/4/5

N2 - K and Mg substituted perovskite catalysts La1 - xK xCo1 - yMgyO3 (x = 0-0.4, y = 0-0.2) for soot combustion were prepared by citric acid complexation and characterized by XRD, FT-IR, SEM, TEM, EDS, H2-TPR, XPS and TG. Soot combustion was remarkably accelerated when K was introduced into LaCoO3. Then Mg was doped into the K substituted LaCoO3, soot combustion was further improved for the restrained growth of Co3O4 phase. K/Mg substitutions were responsible for enhancing activity of catalysts by improving reducibility as suggested by H2-TPR studies. Among all the catalysts, La0.6K0.4Co0.9Mg0.1O3 exhibited the highest activity.

AB - K and Mg substituted perovskite catalysts La1 - xK xCo1 - yMgyO3 (x = 0-0.4, y = 0-0.2) for soot combustion were prepared by citric acid complexation and characterized by XRD, FT-IR, SEM, TEM, EDS, H2-TPR, XPS and TG. Soot combustion was remarkably accelerated when K was introduced into LaCoO3. Then Mg was doped into the K substituted LaCoO3, soot combustion was further improved for the restrained growth of Co3O4 phase. K/Mg substitutions were responsible for enhancing activity of catalysts by improving reducibility as suggested by H2-TPR studies. Among all the catalysts, La0.6K0.4Co0.9Mg0.1O3 exhibited the highest activity.

KW - K

KW - Mg

KW - Perovskite

KW - Soot combustion

KW - Substitution

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DO - 10.1016/j.catcom.2014.01.029

M3 - 文章

AN - SCOPUS:84894565343

SN - 1566-7367

VL - 49

SP - 15

EP - 19

JO - Catalysis Communications

JF - Catalysis Communications

ER -

Catalytic removal of diesel soot particulates over K and Mg substituted La_{1 - X}K_xCo_{1 - y}Mg_yO₃ perovskite oxides

Abstract

Keywords

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