A hollow structure WO3@CeO2 catalyst for NH3-SCR of NOx

Xiaoping Chen; Qi Liu; Qin Wu; Zekun Luo; Weitao Zhao; Jianjun Chen; Junhua Li

doi:10.1016/j.catcom.2020.106252

A hollow structure WO₃@CeO₂ catalyst for NH₃-SCR of NO_x

Xiaoping Chen, Qi Liu, Qin Wu, Zekun Luo, Weitao Zhao, Jianjun Chen^*, Junhua Li

^*Corresponding author for this work

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

32 Citations (Scopus)

Abstract

Constructing a hollow structured Ce-based catalyst is an effective way to result in an efficient catalytic system for the selective catalytic reduction of NO_x using NH₃ (NH₃-SCR). A WO₃@CeO₂ catalyst with hollow structure was successfully developed using carbon sphere as hard template, and tested for the NH₃-SCR of NO_x reaction. The obtained WO₃@CeO₂ catalyst with hollow structure exhibit higher NO_x conversion (88%) than traditional WO₃-CeO₂ catalyst (40%) at 200 °C, and superior SO₂ and H₂O tolerance at 300 °C, given its high specific surface area, reducible W species, increased specific amount of chemisorbed oxygen species and acid sites.

Original language	English
Article number	106252
Journal	Catalysis Communications
Volume	149
DOIs	https://doi.org/10.1016/j.catcom.2020.106252
Publication status	Published - 15 Jan 2021
Externally published	Yes

Keywords

CeO
Hollow structure catalyst
Low-temperature NH-SCR
WO

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10.1016/j.catcom.2020.106252

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title = "A hollow structure WO3@CeO2 catalyst for NH3-SCR of NOx",

abstract = "Constructing a hollow structured Ce-based catalyst is an effective way to result in an efficient catalytic system for the selective catalytic reduction of NOx using NH3 (NH3-SCR). A WO3@CeO2 catalyst with hollow structure was successfully developed using carbon sphere as hard template, and tested for the NH3-SCR of NOx reaction. The obtained WO3@CeO2 catalyst with hollow structure exhibit higher NOx conversion (88%) than traditional WO3-CeO2 catalyst (40%) at 200 °C, and superior SO2 and H2O tolerance at 300 °C, given its high specific surface area, reducible W species, increased specific amount of chemisorbed oxygen species and acid sites.",

keywords = "CeO, Hollow structure catalyst, Low-temperature NH-SCR, WO",

author = "Xiaoping Chen and Qi Liu and Qin Wu and Zekun Luo and Weitao Zhao and Jianjun Chen and Junhua Li",

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T1 - A hollow structure WO3@CeO2 catalyst for NH3-SCR of NOx

AU - Chen, Xiaoping

AU - Liu, Qi

AU - Wu, Qin

AU - Luo, Zekun

AU - Zhao, Weitao

AU - Chen, Jianjun

AU - Li, Junhua

PY - 2021/1/15

Y1 - 2021/1/15

N2 - Constructing a hollow structured Ce-based catalyst is an effective way to result in an efficient catalytic system for the selective catalytic reduction of NOx using NH3 (NH3-SCR). A WO3@CeO2 catalyst with hollow structure was successfully developed using carbon sphere as hard template, and tested for the NH3-SCR of NOx reaction. The obtained WO3@CeO2 catalyst with hollow structure exhibit higher NOx conversion (88%) than traditional WO3-CeO2 catalyst (40%) at 200 °C, and superior SO2 and H2O tolerance at 300 °C, given its high specific surface area, reducible W species, increased specific amount of chemisorbed oxygen species and acid sites.

AB - Constructing a hollow structured Ce-based catalyst is an effective way to result in an efficient catalytic system for the selective catalytic reduction of NOx using NH3 (NH3-SCR). A WO3@CeO2 catalyst with hollow structure was successfully developed using carbon sphere as hard template, and tested for the NH3-SCR of NOx reaction. The obtained WO3@CeO2 catalyst with hollow structure exhibit higher NOx conversion (88%) than traditional WO3-CeO2 catalyst (40%) at 200 °C, and superior SO2 and H2O tolerance at 300 °C, given its high specific surface area, reducible W species, increased specific amount of chemisorbed oxygen species and acid sites.

KW - CeO

KW - Hollow structure catalyst

KW - Low-temperature NH-SCR

KW - WO

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DO - 10.1016/j.catcom.2020.106252

M3 - Article

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VL - 149

JO - Catalysis Communications

JF - Catalysis Communications

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A hollow structure WO₃@CeO₂ catalyst for NH₃-SCR of NO_x

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Keywords

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