Titania-Samarium-Manganese Composite Oxide for the Low-Temperature Selective Catalytic Reduction of NO with NH3 - Details

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Abstract：

A　novel　Ti-doped　Sm-Mn　mixed　oxide　(TiSmMnOx)　was　first　designed　for　the　selective　catalytic　reduction　(SCR)　of　NOx　with　NH3　at　a　low　temperature.　The　TiSmMnOx　catalyst　exhibited　a　superior　catalytic　performance,　in　which　NOx　conversion　higher　than　80%　and　N2　selectivity　above　90%　could　be　achieved　in　a　wide-operating　temperature　window　(60-225　°C).　Specially,　the　catalyst　also　showed　high　durability　against　the　large　space　velocity　and　excellent　SO2/H2O　resistance.　Ti　incorporation　can　efficiently　inhibit　MnOx　crystallization　and　tune　the　MnOx　phase　during　calcination　at　a　high　temperature.　Subsequently,　a　high　specific　surface　area　as　well　as　an　increased　amount　of　acid　sites　on　the　TiSmMnOx　catalysts　were　produced.　Further,　the　reducibility　of　the　Sm-doped　MnOx　catalyst　was　modulated,　facilitating　NO　oxidation　and　inhibiting　NH3　nonselective　oxidation.　Consequently,　a　superior　SCR　activity　was　achieved　at　a　low　temperature　and　the　operating　temperature　window　of　the　TiSmMnOx　catalyst　was　significantly　widened.　These　findings　may　provide　new　insights　into　the　reasonable　design　and　development　of　the　new　non-vanadium　catalysts　with　a　high　NH3-SCR　activity　for　industrial　application.　Copyright　©　2020　American　Chemical　Society.

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[ 1 ] [Xu, Q.]Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China
[ 2 ] [Fang, Z.]Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China
[ 3 ] [Chen, Y.]Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China
[ 4 ] [Guo, Y.]Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China
[ 5 ] [Guo, Y.]Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China
[ 6 ] [Wang, L.]Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China
[ 7 ] [Wang, Y.]Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China
[ 8 ] [Zhang, J.]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, University Town, Fuzhou, 350108, China
[ 9 ] [Zhan, W.]Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China

Reprint 's Address：

[Zhan, W.]Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and TechnologyChina

Email：

zhanwc@ecust.edu.cn

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Source ：

Environmental Science and Technology

ISSN： 0013-936X

Year： 2020

Issue： 4

Volume： 54

Page： 2530-2538

9 . 0 2 8

JCR@2020

1 0 . 9 0 0

JCR@2023

ESI HC Threshold：159

JCR Journal Grade：1

CAS Journal Grade：1

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ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 0

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