Critical influence of mn on low-temperature catalytic activity of Mn/Na2WO4/SiO2 catalyst for oxidative coupling of methane

被引：41
|
作者：
Malekzadeh, A
Abedini, M
Khodadadi, AA
Amini, M
Mishra, HK
Dalai, AK [1 ]
机构：
[1] Univ Saskatchewan, Dept Chem Engn, Catalysis & Chem React Engn Lab, Saskatoon, SK S7N 5C9, Canada
[2] Univ Tehran, Dept Chem, Inorgan Chem Res Lab, Tehran 141556455, Iran
[3] Univ Tehran, Dept Chem Engn, Catalysis & Chem React Engn Lab, Tehran 113655463, Iran
来源：
CATALYSIS LETTERS | 2002年 / 84卷 / 1-2期
关键词：
oxidative coupling of methane; low-temperature activity; hot-spot and manganese;
D O I：
10.1023/A:1021020516674
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：
Oxidative coupling of methane (OCM) was investigated in the temperature range 370-775 degreesC over Mn/Na(2)WO(4)/SiO(2) catalysts with different loadings of manganese in integral-mode conditions. Na(2)WO(4)/SiO(2) shows no activity at low temperature (370 degreesC), whereas Mn-doped catalyst exhibits 14% C(2+) yield under similar reaction conditions, indicating that manganese plays a critical role in low-temperature methane coupling reaction. Partial pressure of oxygen in the feed also influences the low-temperature OCM activity of the catalysts.
引用
收藏
页码：45 / 51
页数：7
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