Catalytic performance of La1-xRbxMnO3 perovskite in the simultaneous removal of NO and soot - 文章详情页

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摘要：

A　series　of　La1-xRbxMnO3　perovskite　catalysts　(x　=　0,　0.1,　0.2,　0.3)　were　prepared　by　solvothermal　method　and　characterized　by　means　of　XRD,　FT-IR,　SEM,　XPS　and　H2-TPR;　their　catalytic　performance　in　the　simultaneous　removal　of　NO　and　soot　was　investigated　in　a　fixed-bed　micro-reactor.　The　results　show　that　the　La1-xRbxMnO3　catalysts　have　a　single　perovskite　structure　and　the　Mn　species　exist　in　the　form　of　Mn3+　and　Mn4+.　In　comparison　with　LaMnO3,　when　La3+　is　partially　substituted　by　Rb+,　more　high-valence　Mn4+　and　oxygen　vacancies　are　formed　in　La1-xRbxMnO3,　which　can　improve　the　redox　properties　and　enhance　the　catalytic　performance　of　La1-xRbxMnO3.　With　the　increase　of　Rb+　content　in　La1-xRbxMnO3,　the　conversion　of　NO　increases　and　the　soot　combustion　temperature　decreases.　For　NO　and　soot　removal　over　La0.7Rb0.3MnO3,x　=　0.3,　the　peak　CO2　formation　temperature　(tmax)　is　430,　with　a　selectivity　of　99.0%　to　CO2;　at　429,　the　maximum　conversion　of　NO　reaches　59.7%.　©　2019,　Science　Press.　All　right　reserved.

关键词：

Manganese compounds Perovskite Rubidium Catalysts Lanthanum compounds Rubidium compounds Soot Nobelium Dust Carbon dioxide Lanthanum

作者机构：

[ 1 ] [Liu, Xiao-Gang]College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing; 102617, China
[ 2 ] [Liu, Xiao-Gang]Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, Beijing; 102617, China
[ 3 ] [Yan, Meng-Xue]College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing; 102617, China
[ 4 ] [Xu, Ru-Wen]College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing; 102617, China
[ 5 ] [Sun, Jin-Ru]College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing; 102617, China
[ 6 ] [Sun, Jin-Ru]Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, Beijing; 102617, China
[ 7 ] [Sun, Jin-Ru]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing; 100124, China
[ 8 ] [Wang, Hong]College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing; 102617, China
[ 9 ] [Wang, Hong]Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, Beijing; 102617, China
[ 10 ] [Chi, Yao-Ling]College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing; 102617, China
[ 11 ] [Chi, Yao-Ling]Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, Beijing; 102617, China
[ 12 ] [Li, Cui-Qing]College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing; 102617, China
[ 13 ] [Li, Cui-Qing]Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, Beijing; 102617, China
[ 14 ] [Song, Yong-Ji]College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing; 102617, China
[ 15 ] [Song, Yong-Ji]Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, Beijing; 102617, China

通讯作者信息：

[wang, hong]college of chemical engineering, beijing institute of petrochemical technology, beijing; 102617, china;;[wang, hong]beijing key laboratory of fuels cleaning and advanced catalytic emission reduction technology, beijing; 102617, china

电子邮件地址：

wanghong@bipt.edu.cn

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