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

页码：45 / 51

页数：7

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JANG ZC, 1993, J PHYS CHEM-US, V97, P12870

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