Enhanced low-temperature activity of Ag-promoted Co-ZSM-5 for the CH 4-SCR of NO

Xiaomei Chen; Aimin Zhu; C. T. Au; Chuan Shi

doi:10.1007/s10562-010-0435-8

Enhanced low-temperature activity of Ag-promoted Co-ZSM-5 for the CH ₄-SCR of NO

Xiaomei Chen, Aimin Zhu, C. T. Au, Chuan Shi^*

^*Corresponding author for this work

Department of Chemistry

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

15 Citations (Scopus)

Abstract

Ag-promoted Co-ZSM-5 catalyst was prepared and tested for the selective catalytic reduction of NO with methane. The low-temperature activity and water-resistant ability of the promoted catalyst were markedly improved in comparison to Co-ZSM-5. The NO conversion was about 100% in the temperature range of 350-550 °C at a space velocity of 6,000 h^-1 and nearly 60% in the presence of 2% water steam. The results showed that with Ag presence, the redox nature of cobalt species changed. The improvement of low-temperature activity and water-resistance of catalyst is attributed to the suppression of methane combustion and the formation of surface nitrate species.

Original language	English
Pages (from-to)	207-212
Number of pages	6
Journal	Catalysis Letters
Volume	141
Issue number	1
DOIs	https://doi.org/10.1007/s10562-010-0435-8
Publication status	Published - Jan 2011

Scopus Subject Areas

Catalysis
Chemistry(all)

User-Defined Keywords

CH-SCR
Co-ZSM-5
DRIFTS
Nitrates
Silver

Access to Document

10.1007/s10562-010-0435-8

Cite this

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title = "Enhanced low-temperature activity of Ag-promoted Co-ZSM-5 for the CH 4-SCR of NO",

abstract = "Ag-promoted Co-ZSM-5 catalyst was prepared and tested for the selective catalytic reduction of NO with methane. The low-temperature activity and water-resistant ability of the promoted catalyst were markedly improved in comparison to Co-ZSM-5. The NO conversion was about 100% in the temperature range of 350-550 °C at a space velocity of 6,000 h-1 and nearly 60% in the presence of 2% water steam. The results showed that with Ag presence, the redox nature of cobalt species changed. The improvement of low-temperature activity and water-resistance of catalyst is attributed to the suppression of methane combustion and the formation of surface nitrate species.",

keywords = "CH-SCR, Co-ZSM-5, DRIFTS, Nitrates, Silver",

author = "Xiaomei Chen and Aimin Zhu and Au, {C. T.} and Chuan Shi",

note = "Funding Information: Acknowledgments The present work was supported by the National Natural Science Foundation of China (No. 20573014 and 20673016) and by the Program for New Century Excellent Talents in University (NCET-07-0136), as well as by the National High Technology and Development Program (863 program) of China (Grant No. 2007AA06Z311).",

year = "2011",

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doi = "10.1007/s10562-010-0435-8",

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AU - Chen, Xiaomei

AU - Zhu, Aimin

AU - Au, C. T.

AU - Shi, Chuan

N1 - Funding Information: Acknowledgments The present work was supported by the National Natural Science Foundation of China (No. 20573014 and 20673016) and by the Program for New Century Excellent Talents in University (NCET-07-0136), as well as by the National High Technology and Development Program (863 program) of China (Grant No. 2007AA06Z311).

PY - 2011/1

Y1 - 2011/1

N2 - Ag-promoted Co-ZSM-5 catalyst was prepared and tested for the selective catalytic reduction of NO with methane. The low-temperature activity and water-resistant ability of the promoted catalyst were markedly improved in comparison to Co-ZSM-5. The NO conversion was about 100% in the temperature range of 350-550 °C at a space velocity of 6,000 h-1 and nearly 60% in the presence of 2% water steam. The results showed that with Ag presence, the redox nature of cobalt species changed. The improvement of low-temperature activity and water-resistance of catalyst is attributed to the suppression of methane combustion and the formation of surface nitrate species.

AB - Ag-promoted Co-ZSM-5 catalyst was prepared and tested for the selective catalytic reduction of NO with methane. The low-temperature activity and water-resistant ability of the promoted catalyst were markedly improved in comparison to Co-ZSM-5. The NO conversion was about 100% in the temperature range of 350-550 °C at a space velocity of 6,000 h-1 and nearly 60% in the presence of 2% water steam. The results showed that with Ag presence, the redox nature of cobalt species changed. The improvement of low-temperature activity and water-resistance of catalyst is attributed to the suppression of methane combustion and the formation of surface nitrate species.

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KW - Co-ZSM-5

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KW - Nitrates

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