Ni-Mn bi-metal oxide catalysts for the low temperature SCR removal of NO with NH3

Yaping Wan; Wenru Zhao; Yu Tang; Liang Li; Huijun Wang; Yunlong Cui; Jinlou Gu; Yongsheng Li; Jianlin Shi

doi:10.1016/j.apcatb.2013.10.049

Ni-Mn bi-metal oxide catalysts for the low temperature SCR removal of NO with NH₃

Yaping Wan
, Wenru Zhao^*
, Yu Tang
, Liang Li
, Huijun Wang
, Yunlong Cui
, Jinlou Gu
, Yongsheng Li
, Jianlin Shi

^*Corresponding author for this work

East China University of Science and Technology
CAS - Shanghai Institute of Ceramics

Research output: Contribution to journal › Review article › peer-review

323 Scopus citations

Abstract

A series of nickel-manganese bi-metal oxide catalysts of different Ni/Mn ratios were prepared by a co-precipitation method for the low temperature selective catalytic reduction (SCR) of NO with NH₃ in the presence of excess O₂. The NO conversion over different catalysts decreased in the following sequence of Ni(0.4)-MnO_x>MnO_x>> Ni(1)-MnO_x>Ni(2.5)-MnO_x>NiO_x. The Ni(0.4)-MnO_x catalyst showed the highest catalytic activity, 85% of NO conversion at 95°C and 100% from 120 to 240°C, among the catalysts investigated. The TPR, XPS, NH₃-TPD and in situ FTIR results revealed that Mn⁴⁺ was the main active species for SCR reaction and the addition of nickel species enhanced the surface concentration and acidity of Lewis acid sites. A possible synergetic catalytic effect was proposed for the low temperature SCR reaction through the electron transfer between Mn and Ni ions.

Original language	English
Pages (from-to)	114-122
Number of pages	9
Journal	Applied Catalysis B: Environmental
Volume	148-149
DOIs	https://doi.org/10.1016/j.apcatb.2013.10.049
State	Published - 27 Apr 2014
Externally published	Yes

Keywords

Lewis acid sites
Low temperature NO-SCR
Nickel and manganese mixed oxides
Surface Mn active species

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10.1016/j.apcatb.2013.10.049

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@article{1abffd8b350e4ccdb6ce413d2f024977,

title = "Ni-Mn bi-metal oxide catalysts for the low temperature SCR removal of NO with NH3",

abstract = "A series of nickel-manganese bi-metal oxide catalysts of different Ni/Mn ratios were prepared by a co-precipitation method for the low temperature selective catalytic reduction (SCR) of NO with NH3 in the presence of excess O2. The NO conversion over different catalysts decreased in the following sequence of Ni(0.4)-MnOx>MnOx>> Ni(1)-MnOx>Ni(2.5)-MnOx>NiOx. The Ni(0.4)-MnOx catalyst showed the highest catalytic activity, 85\% of NO conversion at 95°C and 100\% from 120 to 240°C, among the catalysts investigated. The TPR, XPS, NH3-TPD and in situ FTIR results revealed that Mn4+ was the main active species for SCR reaction and the addition of nickel species enhanced the surface concentration and acidity of Lewis acid sites. A possible synergetic catalytic effect was proposed for the low temperature SCR reaction through the electron transfer between Mn and Ni ions.",

keywords = "Lewis acid sites, Low temperature NO-SCR, Nickel and manganese mixed oxides, Surface Mn active species",

author = "Yaping Wan and Wenru Zhao and Yu Tang and Liang Li and Huijun Wang and Yunlong Cui and Jinlou Gu and Yongsheng Li and Jianlin Shi",

year = "2014",

month = apr,

day = "27",

doi = "10.1016/j.apcatb.2013.10.049",

language = "英语",

volume = "148-149",

pages = "114--122",

journal = "Applied Catalysis B: Environmental",

issn = "0926-3373",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Ni-Mn bi-metal oxide catalysts for the low temperature SCR removal of NO with NH3

AU - Wan, Yaping

AU - Zhao, Wenru

AU - Tang, Yu

AU - Li, Liang

AU - Wang, Huijun

AU - Cui, Yunlong

AU - Gu, Jinlou

AU - Li, Yongsheng

AU - Shi, Jianlin

PY - 2014/4/27

Y1 - 2014/4/27

N2 - A series of nickel-manganese bi-metal oxide catalysts of different Ni/Mn ratios were prepared by a co-precipitation method for the low temperature selective catalytic reduction (SCR) of NO with NH3 in the presence of excess O2. The NO conversion over different catalysts decreased in the following sequence of Ni(0.4)-MnOx>MnOx>> Ni(1)-MnOx>Ni(2.5)-MnOx>NiOx. The Ni(0.4)-MnOx catalyst showed the highest catalytic activity, 85% of NO conversion at 95°C and 100% from 120 to 240°C, among the catalysts investigated. The TPR, XPS, NH3-TPD and in situ FTIR results revealed that Mn4+ was the main active species for SCR reaction and the addition of nickel species enhanced the surface concentration and acidity of Lewis acid sites. A possible synergetic catalytic effect was proposed for the low temperature SCR reaction through the electron transfer between Mn and Ni ions.

AB - A series of nickel-manganese bi-metal oxide catalysts of different Ni/Mn ratios were prepared by a co-precipitation method for the low temperature selective catalytic reduction (SCR) of NO with NH3 in the presence of excess O2. The NO conversion over different catalysts decreased in the following sequence of Ni(0.4)-MnOx>MnOx>> Ni(1)-MnOx>Ni(2.5)-MnOx>NiOx. The Ni(0.4)-MnOx catalyst showed the highest catalytic activity, 85% of NO conversion at 95°C and 100% from 120 to 240°C, among the catalysts investigated. The TPR, XPS, NH3-TPD and in situ FTIR results revealed that Mn4+ was the main active species for SCR reaction and the addition of nickel species enhanced the surface concentration and acidity of Lewis acid sites. A possible synergetic catalytic effect was proposed for the low temperature SCR reaction through the electron transfer between Mn and Ni ions.

KW - Lewis acid sites

KW - Low temperature NO-SCR

KW - Nickel and manganese mixed oxides

KW - Surface Mn active species

UR - https://www.scopus.com/pages/publications/84887594577

U2 - 10.1016/j.apcatb.2013.10.049

DO - 10.1016/j.apcatb.2013.10.049

M3 - 文献综述

AN - SCOPUS:84887594577

SN - 0926-3373

VL - 148-149

SP - 114

EP - 122

JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

ER -

Ni-Mn bi-metal oxide catalysts for the low temperature SCR removal of NO with NH₃

Abstract

Keywords

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