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

被引：18
作者：
Kameoka, S
Kita, K
Tanaka, S
Nobukawa, T
Ito, S
Tomishige, K
Miyadera, T
Kunimori, K
机构：
[1] Univ Tsukuba, Inst Mat Sci, Tsukuba, Ibaraki 3058573, Japan
[2] AIST, Res Inst Energy Utilizat, Tsukuba, Ibaraki 3058569, Japan
来源：
CATALYSIS LETTERS | 2002年 / 79卷 / 1-4期
关键词：
SCR; N2O; enhancement of C2H6 oxidation; mechanism; Fe-BEA zeolite;
D O I：
10.1023/A:1015387704297
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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 O-2 took place below 350 degreesC (in C2H6/O-2). In the N2O/C2H6/O-2 system, however, it was found that the reaction of C2H6 with O-2 was drastically enhanced by the presence of N2O even at low temperatures (200-300 degreesC). 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.
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收藏
页码：63 / 67
页数：5
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