Promoting effect of transition metal on low-temperature deNOx activity of CeO2@TiO2 catalyst for selective catalytic reduction

Ming Hong Wang; Liang Liang Wang; Jun Liu; Zhao Yang Fei; Xian Chen; Ji Hai Tang; Mi Fen Cui; Xu Qiao

Promoting effect of transition metal on low-temperature deNO_x activity of CeO₂@TiO₂ catalyst for selective catalytic reduction

Ming Hong Wang, Liang Liang Wang, Jun Liu, Zhao Yang Fei, Xian Chen, Ji Hai Tang, Mi Fen Cui, Xu Qiao

College of Chemical Engineering

Nanjing Tech University

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

6 Scopus citations

Abstract

Transition metal M(M=Mn, Co, Fe and Cu) modified amorphous CeO₂@TiO₂ catalysts were prepared via a spontaneous deposition strategy. The low-temperature deNO_x activity of M-CeO₂@TiO₂ for selective catalytic reduction was investigated. XRD, TEM, N₂ adsorption-desorption, H₂-TPR, NH₃-TPD and in-situ FT-IR were used to study the structure, surface property and low-temperature NH₃-SCR reaction performance of M-CeO₂@TiO₂. The results showed that the M-CeO₂@TiO₂ had better low-temperature oxidation reducibility and more surface acid. Cu doping had the most significant promoting effect on low-temperature deNO_x activity for selective catalytic reduction. During the low-temperature NH₃-SCR reaction, both the L-H and E-R mechanisms existed over the Cu-CeO₂@TiO₂ and the L-H mechanism could play a pivotal role due to the “fast SCR” process.

Original language	English
Pages (from-to)	497-504
Number of pages	8
Journal	Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology
Volume	45
Issue number	4
State	Published - 1 Apr 2017

Keywords

Amorphous phase
Low-temperature activity
Promoting effect
Selective catalytic reduction
Transition metals doping

Cite this

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title = "Promoting effect of transition metal on low-temperature deNOx activity of CeO2@TiO2 catalyst for selective catalytic reduction",

abstract = "Transition metal M(M=Mn, Co, Fe and Cu) modified amorphous CeO2@TiO2 catalysts were prepared via a spontaneous deposition strategy. The low-temperature deNOx activity of M-CeO2@TiO2 for selective catalytic reduction was investigated. XRD, TEM, N2 adsorption-desorption, H2-TPR, NH3-TPD and in-situ FT-IR were used to study the structure, surface property and low-temperature NH3-SCR reaction performance of M-CeO2@TiO2. The results showed that the M-CeO2@TiO2 had better low-temperature oxidation reducibility and more surface acid. Cu doping had the most significant promoting effect on low-temperature deNOx activity for selective catalytic reduction. During the low-temperature NH3-SCR reaction, both the L-H and E-R mechanisms existed over the Cu-CeO2@TiO2 and the L-H mechanism could play a pivotal role due to the “fast SCR” process.",

keywords = "Amorphous phase, Low-temperature activity, Promoting effect, Selective catalytic reduction, Transition metals doping",

author = "Wang, {Ming Hong} and Wang, {Liang Liang} and Jun Liu and Fei, {Zhao Yang} and Xian Chen and Tang, {Ji Hai} and Cui, {Mi Fen} and Xu Qiao",

year = "2017",

month = apr,

day = "1",

language = "英语",

volume = "45",

pages = "497--504",

journal = "Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology",

issn = "2097-213X",

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}

TY - JOUR

T1 - Promoting effect of transition metal on low-temperature deNOx activity of CeO2@TiO2 catalyst for selective catalytic reduction

AU - Wang, Ming Hong

AU - Wang, Liang Liang

AU - Liu, Jun

AU - Fei, Zhao Yang

AU - Chen, Xian

AU - Tang, Ji Hai

AU - Cui, Mi Fen

AU - Qiao, Xu

PY - 2017/4/1

Y1 - 2017/4/1

N2 - Transition metal M(M=Mn, Co, Fe and Cu) modified amorphous CeO2@TiO2 catalysts were prepared via a spontaneous deposition strategy. The low-temperature deNOx activity of M-CeO2@TiO2 for selective catalytic reduction was investigated. XRD, TEM, N2 adsorption-desorption, H2-TPR, NH3-TPD and in-situ FT-IR were used to study the structure, surface property and low-temperature NH3-SCR reaction performance of M-CeO2@TiO2. The results showed that the M-CeO2@TiO2 had better low-temperature oxidation reducibility and more surface acid. Cu doping had the most significant promoting effect on low-temperature deNOx activity for selective catalytic reduction. During the low-temperature NH3-SCR reaction, both the L-H and E-R mechanisms existed over the Cu-CeO2@TiO2 and the L-H mechanism could play a pivotal role due to the “fast SCR” process.

AB - Transition metal M(M=Mn, Co, Fe and Cu) modified amorphous CeO2@TiO2 catalysts were prepared via a spontaneous deposition strategy. The low-temperature deNOx activity of M-CeO2@TiO2 for selective catalytic reduction was investigated. XRD, TEM, N2 adsorption-desorption, H2-TPR, NH3-TPD and in-situ FT-IR were used to study the structure, surface property and low-temperature NH3-SCR reaction performance of M-CeO2@TiO2. The results showed that the M-CeO2@TiO2 had better low-temperature oxidation reducibility and more surface acid. Cu doping had the most significant promoting effect on low-temperature deNOx activity for selective catalytic reduction. During the low-temperature NH3-SCR reaction, both the L-H and E-R mechanisms existed over the Cu-CeO2@TiO2 and the L-H mechanism could play a pivotal role due to the “fast SCR” process.

KW - Amorphous phase

KW - Low-temperature activity

KW - Promoting effect

KW - Selective catalytic reduction

KW - Transition metals doping

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M3 - 文章

AN - SCOPUS:85021704594

SN - 2097-213X

VL - 45

SP - 497

EP - 504

JO - Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology

JF - Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology

IS - 4

ER -

Promoting effect of transition metal on low-temperature deNO_x activity of CeO₂@TiO₂ catalyst for selective catalytic reduction

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