Catalytic decomposition of N2O and catalytic reduction of N2O and N2O + NO by NH3 in the presence of O2 over Fe-zeolite

Ariel Guzmán-Vargas; G. Delahay; Bernard Coq

doi:10.1016/S0926-3373(02)00268-0

Catalytic decomposition of N₂O and catalytic reduction of N₂O and N₂O + NO by NH₃ in the presence of O₂ over Fe-zeolite

Ariel Guzmán-Vargas, G. Delahay, Bernard Coq

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

134 Scopus citations

Abstract

The decomposition of N₂O, and the catalytic reduction by NH₃ of N₂O and N₂O + NO, have been studied on Fe-BEA, -ZSM-5 and -FER catalysts. These catalysts were prepared by classical ion exchange and characterized by TPR after various activation treatments. Fe-FER is the most active material in the catalytic decomposition because "oxo-species" reducible at low temperature, appearing upon interaction of Fe^II-zeolite with N₂O (α-oxygen), are formed in largest amounts with this material. The decomposition of N₂O is promoted by addition of NH₃, and even more with NH₃ + NO in the case of Fe-FER and -BEA. It is proposed that the NO-promoted reduction of N₂O originated from the fast surface reaction between α-oxygen O* and NO* to yield NO₂*, which in turn reacts immediately with NH₃.

Original language	English
Pages (from-to)	369-379
Number of pages	11
Journal	Applied Catalysis B: Environmental
Volume	42
Issue number	4
DOIs	https://doi.org/10.1016/S0926-3373(02)00268-0
State	Published - 10 Jun 2003
Externally published	Yes

Keywords

Ammonia
Iron
Nitric oxide
Nitrous oxide
Selective reduction
Temperature programmed reduction
Zeolite

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10.1016/S0926-3373(02)00268-0

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title = "Catalytic decomposition of N2O and catalytic reduction of N2O and N2O + NO by NH3 in the presence of O2 over Fe-zeolite",

abstract = "The decomposition of N2O, and the catalytic reduction by NH3 of N2O and N2O + NO, have been studied on Fe-BEA, -ZSM-5 and -FER catalysts. These catalysts were prepared by classical ion exchange and characterized by TPR after various activation treatments. Fe-FER is the most active material in the catalytic decomposition because {"}oxo-species{"} reducible at low temperature, appearing upon interaction of FeII-zeolite with N2O (α-oxygen), are formed in largest amounts with this material. The decomposition of N2O is promoted by addition of NH3, and even more with NH3 + NO in the case of Fe-FER and -BEA. It is proposed that the NO-promoted reduction of N2O originated from the fast surface reaction between α-oxygen O* and NO* to yield NO2*, which in turn reacts immediately with NH3.",

keywords = "Ammonia, Iron, Nitric oxide, Nitrous oxide, Selective reduction, Temperature programmed reduction, Zeolite",

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T1 - Catalytic decomposition of N2O and catalytic reduction of N2O and N2O + NO by NH3 in the presence of O2 over Fe-zeolite

AU - Guzmán-Vargas, Ariel

AU - Delahay, G.

AU - Coq, Bernard

PY - 2003/6/10

Y1 - 2003/6/10

N2 - The decomposition of N2O, and the catalytic reduction by NH3 of N2O and N2O + NO, have been studied on Fe-BEA, -ZSM-5 and -FER catalysts. These catalysts were prepared by classical ion exchange and characterized by TPR after various activation treatments. Fe-FER is the most active material in the catalytic decomposition because "oxo-species" reducible at low temperature, appearing upon interaction of FeII-zeolite with N2O (α-oxygen), are formed in largest amounts with this material. The decomposition of N2O is promoted by addition of NH3, and even more with NH3 + NO in the case of Fe-FER and -BEA. It is proposed that the NO-promoted reduction of N2O originated from the fast surface reaction between α-oxygen O* and NO* to yield NO2*, which in turn reacts immediately with NH3.

AB - The decomposition of N2O, and the catalytic reduction by NH3 of N2O and N2O + NO, have been studied on Fe-BEA, -ZSM-5 and -FER catalysts. These catalysts were prepared by classical ion exchange and characterized by TPR after various activation treatments. Fe-FER is the most active material in the catalytic decomposition because "oxo-species" reducible at low temperature, appearing upon interaction of FeII-zeolite with N2O (α-oxygen), are formed in largest amounts with this material. The decomposition of N2O is promoted by addition of NH3, and even more with NH3 + NO in the case of Fe-FER and -BEA. It is proposed that the NO-promoted reduction of N2O originated from the fast surface reaction between α-oxygen O* and NO* to yield NO2*, which in turn reacts immediately with NH3.

KW - Ammonia

KW - Iron

KW - Nitric oxide

KW - Nitrous oxide

KW - Selective reduction

KW - Temperature programmed reduction

KW - Zeolite

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DO - 10.1016/S0926-3373(02)00268-0

M3 - Artículo

SN - 0926-3373

VL - 42

SP - 369

EP - 379

JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

IS - 4

ER -

Catalytic decomposition of N₂O and catalytic reduction of N₂O and N₂O + NO by NH₃ in the presence of O₂ over Fe-zeolite

Abstract

Keywords

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