Simultaneous removal of NO and soot over La1-xLixMnO3 perovskite catalysts - Details

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Abstract：

Catalysts　of　La1-xLixMnO3(x=0,　0.05,　0.15,　0.25)　perovskite-type　complex　metal　oxide　were　prepared　by　solvothermal　method.　The　catalysts　were　characterized　by　XRD,　FT-IR,　XPS,　H2-TPR　and　NO-TPD.　The　catalytic　performance　of　the　catalysts　for　eliminating　nitric　oxide　(NO)　and　diesel　particulate　matter　(soot)　simultaneously　was　evaluated　in　a　fixed　micro　reactor.　The　results　showed　that　La1-xLixMnO3　catalysts　had　single　perovskite　structure　and　Mn　species　existed　in　the　form　of　Mn3+　and　Mn4+.　When　La3+　is　partially　substituted　by　Li+　in　LaMnO3,　there　were　more　Mn4+　and　oxygen　vacancies　in　the　La1-xLixMnO3　catalysts,　which　can　promote　the　adsorption　and　activation　of　oxygen　species　and　nitrogen　oxides,　thus　increase　the　redox　properties　and　improve　the　catalytic　activity.　The　La0.85Li0.15MnO3　catalyst　had　better　performance,　where　the　doping　amount　of　Li+　was　0.15,　the　temperature　of　the　maximum　combustion　rate　(Tmax)　and　the　ignition　temperature　(Tig)　was　463　and　327,　respectively,　the　maximum　conversion　of　NO　(X_NO^max)　was　42.1%,　reaction　temperature　(T_NO^max)　was　383.　©　All　Right　Reserved.

Keyword：

Nitrogen oxides Perovskite Lithium compounds Soot Metals Catalyst activity Ignition Nitric oxide Lanthanum compounds

Author Community：

[ 1 ] [Liu, Xiaogang]Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing; 102617, China
[ 2 ] [Wei, Bo]Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing; 102617, China
[ 3 ] [Wei, Bo]Yueyang Changling Refinery Engineering Co., Ltd, Yueyang; Hunan; 414000, China
[ 4 ] [Shi, Yunfei]Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing; 102617, China
[ 5 ] [Sun, Jinru]Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing; 102617, China
[ 6 ] [Sun, Jinru]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing; 100124, China
[ 7 ] [Tian, Yu]Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing; 102617, China
[ 8 ] [Tian, Yu]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing; 100124, China
[ 9 ] [Zhao, Yu]Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing; 102617, China
[ 10 ] [Chi, Yaoling]Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing; 102617, China
[ 11 ] [Wang, Hong]Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing; 102617, China
[ 12 ] [Li, Cuiqing]Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing; 102617, China
[ 13 ] [Song, Yongji]Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing; 102617, China

Reprint Author's Address：

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

Email：

wanghong@bipt.edu.cn

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