Deep oxidation of methane over Cu and Ag modified manganese oxide catalysts

被引：7

作者：

Wang, X ^{[1
]}

Xie, YC ^{[1
]}

机构：

[1] Peking Univ, Inst Phys Chem, Beijing 100871, Peoples R China

来源：

REACTION KINETICS AND CATALYSIS LETTERS | 2000年 / 71卷 / 01期

关键词：

CH4 deep oxidation; manganese oxide catalysts; Cu and Ag additives; high specific surface area catalysts;

D O I：

10.1023/A:1010346519708

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：

Cu-Mn and Ag-Mn composite oxide catalysts were prepared by the modification of high specific surface area MnO2 precursor with Cu or Ag, and used for CH4 deep oxidation. The results were compared with that of unmodified MnOx. It is found that both Cu and Ag additives increase the oxidation activity of manganese oxide below 420 degreesC; however, only Ag lowers the CH4 complete oxidation temperature (T-98), whereas Cu increases the T-98 The catalysts were characterized by means of BET, XRD and H-2-TPR. Due to the synergetic effects of Cu and Ag ions with manganese oxide, the activity of the oxygen species is improved, leading to the increase of the oxidation activities of the modified catalysts, especially below 420 degreesC.

引用

页码：121 / 128

页数：8

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