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

WANG Ming-hong; WANG Liang-liang; LIU Jun; FEI Zhao-yang; CHEN Xian; TANG Ji-hai; CUI Mi-fen; QIAO Xu

Volume 45 Issue 4

Apr. 2017

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Article Navigation > Journal of Fuel Chemistry and Technology > 2017 > 45(4): 497-504

WANG Ming-hong, WANG Liang-liang, LIU Jun, FEI Zhao-yang, CHEN Xian, TANG Ji-hai, CUI Mi-fen, QIAO Xu. Promoting effect of transition metal on low-temperature deNOx activity of CeO2@TiO2 catalyst for selective catalytic reduction[J]. Journal of Fuel Chemistry and Technology, 2017, 45(4): 497-504.

Citation:

WANG Ming-hong, WANG Liang-liang, LIU Jun, FEI Zhao-yang, CHEN Xian, TANG Ji-hai, CUI Mi-fen, QIAO Xu. Promoting effect of transition metal on low-temperature deNO_x activity of CeO₂@TiO₂ catalyst for selective catalytic reduction[J]. Journal of Fuel Chemistry and Technology, 2017, 45(4): 497-504.

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

WANG Ming-hong^{1, 2},
WANG Liang-liang^{1, 2},
LIU Jun^{1, 2},
FEI Zhao-yang^{1, 2
,
,},
CHEN Xian²,
TANG Ji-hai²,
CUI Mi-fen²,
QIAO Xu^{1, 2}

1.
State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
2.
College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China

Funds:

the National Natural Science Foundation of China 21306089

Innovation Foundation of Jiangsu Province SJLX15-0347

More Information

Corresponding author: FEI Zhao-yang, Tel:025-83587168, E-mail:zhaoyangfei@njtech.edu.cn
Received Date: 2016-12-30
Rev Recd Date: 2017-02-27

Available Online: 2021-01-23

Publish Date: 2017-04-10

Abstract

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.
- transition metals doping,
- amorphous phase,
- selective catalytic reduction,
- low-temperature activity,
- promoting effect

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References(23)

References

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