New Mechanistic Insights in the NH3-SCR Reactions at Low Temperature

M. P. Ruggeri; T. Selleri; I. Nova; E. Tronconi; J. A. Pihl; T. J. Toops; W. P. Partridge

doi:10.1007/s11244-016-0567-1

New Mechanistic Insights in the NH₃-SCR Reactions at Low Temperature

M. P. Ruggeri, T. Selleri, I. Nova, E. Tronconi, J. A. Pihl, T. J. Toops, W. P. Partridge

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

19 Scopus citations

Abstract

The present study is focused on the investigation of the low temperature Standard SCR reaction mechanism over Fe- and Cu-promoted zeolites. Different techniques are employed, including in situ DRIFTS, transient reaction analysis and chemical trapping techniques. The results present strong evidence of nitrite formation in the oxidative activation of NO and of their role in SCR reactions. These elements lead to a deeper understanding of the standard SCR chemistry at low temperature and can potentially improve the consistency of mechanistic mathematical models. Moreover, comprehension of the mechanism on a fundamental level can contribute to the development of improved SCR catalysts.

Original language	English
Pages (from-to)	907-912
Number of pages	6
Journal	Topics in Catalysis
Volume	59
Issue number	10-12
DOIs	https://doi.org/10.1007/s11244-016-0567-1
State	Published - Jul 1 2016

Keywords

Chemical trapping
Cu zeolite
Fe zeolite
In situ DRIFTS
Low temperature SCR
SCR mechanism

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10.1007/s11244-016-0567-1

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title = "New Mechanistic Insights in the NH3-SCR Reactions at Low Temperature",

abstract = "The present study is focused on the investigation of the low temperature Standard SCR reaction mechanism over Fe- and Cu-promoted zeolites. Different techniques are employed, including in situ DRIFTS, transient reaction analysis and chemical trapping techniques. The results present strong evidence of nitrite formation in the oxidative activation of NO and of their role in SCR reactions. These elements lead to a deeper understanding of the standard SCR chemistry at low temperature and can potentially improve the consistency of mechanistic mathematical models. Moreover, comprehension of the mechanism on a fundamental level can contribute to the development of improved SCR catalysts.",

keywords = "Chemical trapping, Cu zeolite, Fe zeolite, In situ DRIFTS, Low temperature SCR, SCR mechanism",

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AU - Ruggeri, M. P.

AU - Selleri, T.

AU - Nova, I.

AU - Tronconi, E.

AU - Pihl, J. A.

AU - Toops, T. J.

AU - Partridge, W. P.

PY - 2016/7/1

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N2 - The present study is focused on the investigation of the low temperature Standard SCR reaction mechanism over Fe- and Cu-promoted zeolites. Different techniques are employed, including in situ DRIFTS, transient reaction analysis and chemical trapping techniques. The results present strong evidence of nitrite formation in the oxidative activation of NO and of their role in SCR reactions. These elements lead to a deeper understanding of the standard SCR chemistry at low temperature and can potentially improve the consistency of mechanistic mathematical models. Moreover, comprehension of the mechanism on a fundamental level can contribute to the development of improved SCR catalysts.

AB - The present study is focused on the investigation of the low temperature Standard SCR reaction mechanism over Fe- and Cu-promoted zeolites. Different techniques are employed, including in situ DRIFTS, transient reaction analysis and chemical trapping techniques. The results present strong evidence of nitrite formation in the oxidative activation of NO and of their role in SCR reactions. These elements lead to a deeper understanding of the standard SCR chemistry at low temperature and can potentially improve the consistency of mechanistic mathematical models. Moreover, comprehension of the mechanism on a fundamental level can contribute to the development of improved SCR catalysts.

KW - Chemical trapping

KW - Cu zeolite

KW - Fe zeolite

KW - In situ DRIFTS

KW - Low temperature SCR

KW - SCR mechanism

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JO - Topics in Catalysis

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New Mechanistic Insights in the NH₃-SCR Reactions at Low Temperature

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Keywords

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