Enhancement of C2H6 oxidation by O2 in the presence of N2O over Fe ion-exchanged BEA zeolite catalyst

Satoshi Kameoka; Kenji Kita; Shin Ichi Tanaka; Takeshi Nobukawa; Shin Ichi Ito; Keiichi Tomishige; Tatsuo Miyadera; Kimio Kunimori

doi:10.1023/A:1015387704297

Enhancement of C₂H₆ oxidation by O₂ in the presence of N₂O over Fe ion-exchanged BEA zeolite catalyst

Satoshi Kameoka, Kenji Kita, Shin Ichi Tanaka, Takeshi Nobukawa, Shin Ichi Ito, Keiichi Tomishige, Tatsuo Miyadera, Kimio Kunimori

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

19 Citations (Scopus)

Abstract

Selective catalytic reduction (SCR) of N₂O with C₂H₆ took place effectively over Fe ion-exchanged BEA zeolite catalyst (Fe-BEA) even in the presence of excess oxygen. The mechanism in the SCR of N₂O with C₂H₆ over Fe-BEA catalyst was studied by a transient response experiment and an in situ DRIFT spectroscopy. No oxidation of C₂H₆ by O₂ took place below 350 °C (in C₂H₆/O₂). In the N₂O/C₂H₆/O₂ system, however, it was found that the reaction of C₂H₆ with O₂ was drastically enhanced by the presence of N₂O even at low temperatures (200-300 °C). Therefore, it was concluded that N₂O played an important role in the oxidation of C₂H₆ (i.e., activation of C₂H₆ at an initial step). On the basis of these findings, the mechanism in the SCR of N₂O with C₂H₆ is discussed.

Original language	English
Pages (from-to)	63-67
Number of pages	5
Journal	Catalysis Letters
Volume	79
Issue number	1-4
DOIs	https://doi.org/10.1023/A:1015387704297
Publication status	Published - 2002 Apr

Keywords

Enhancement of CH oxidation
Fe-BEA zeolite
Mechanism
NO
SCR

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title = "Enhancement of C2H6 oxidation by O2 in the presence of N2O over Fe ion-exchanged BEA zeolite catalyst",

abstract = "Selective catalytic reduction (SCR) of N2O with C2H6 took place effectively over Fe ion-exchanged BEA zeolite catalyst (Fe-BEA) even in the presence of excess oxygen. The mechanism in the SCR of N2O with C2H6 over Fe-BEA catalyst was studied by a transient response experiment and an in situ DRIFT spectroscopy. No oxidation of C2H6 by O2 took place below 350 °C (in C2H6/O2). In the N2O/C2H6/O2 system, however, it was found that the reaction of C2H6 with O2 was drastically enhanced by the presence of N2O even at low temperatures (200-300 °C). Therefore, it was concluded that N2O played an important role in the oxidation of C2H6 (i.e., activation of C2H6 at an initial step). On the basis of these findings, the mechanism in the SCR of N2O with C2H6 is discussed.",

keywords = "Enhancement of CH oxidation, Fe-BEA zeolite, Mechanism, NO, SCR",

author = "Satoshi Kameoka and Kenji Kita and Tanaka, {Shin Ichi} and Takeshi Nobukawa and Ito, {Shin Ichi} and Keiichi Tomishige and Tatsuo Miyadera and Kimio Kunimori",

year = "2002",

month = apr,

doi = "10.1023/A:1015387704297",

language = "English",

volume = "79",

pages = "63--67",

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T1 - Enhancement of C2H6 oxidation by O2 in the presence of N2O over Fe ion-exchanged BEA zeolite catalyst

AU - Kameoka, Satoshi

AU - Kita, Kenji

AU - Tanaka, Shin Ichi

AU - Nobukawa, Takeshi

AU - Ito, Shin Ichi

AU - Tomishige, Keiichi

AU - Miyadera, Tatsuo

AU - Kunimori, Kimio

PY - 2002/4

Y1 - 2002/4

N2 - Selective catalytic reduction (SCR) of N2O with C2H6 took place effectively over Fe ion-exchanged BEA zeolite catalyst (Fe-BEA) even in the presence of excess oxygen. The mechanism in the SCR of N2O with C2H6 over Fe-BEA catalyst was studied by a transient response experiment and an in situ DRIFT spectroscopy. No oxidation of C2H6 by O2 took place below 350 °C (in C2H6/O2). In the N2O/C2H6/O2 system, however, it was found that the reaction of C2H6 with O2 was drastically enhanced by the presence of N2O even at low temperatures (200-300 °C). Therefore, it was concluded that N2O played an important role in the oxidation of C2H6 (i.e., activation of C2H6 at an initial step). On the basis of these findings, the mechanism in the SCR of N2O with C2H6 is discussed.

AB - Selective catalytic reduction (SCR) of N2O with C2H6 took place effectively over Fe ion-exchanged BEA zeolite catalyst (Fe-BEA) even in the presence of excess oxygen. The mechanism in the SCR of N2O with C2H6 over Fe-BEA catalyst was studied by a transient response experiment and an in situ DRIFT spectroscopy. No oxidation of C2H6 by O2 took place below 350 °C (in C2H6/O2). In the N2O/C2H6/O2 system, however, it was found that the reaction of C2H6 with O2 was drastically enhanced by the presence of N2O even at low temperatures (200-300 °C). Therefore, it was concluded that N2O played an important role in the oxidation of C2H6 (i.e., activation of C2H6 at an initial step). On the basis of these findings, the mechanism in the SCR of N2O with C2H6 is discussed.

KW - Enhancement of CH oxidation

KW - Fe-BEA zeolite

KW - Mechanism

KW - NO

KW - SCR

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Enhancement of C₂H₆ oxidation by O₂ in the presence of N₂O over Fe ion-exchanged BEA zeolite catalyst

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