Catalytic combustion of hydrocarbons with Mn and Cu-doped ceria-zirconia solid solutions

被引：190

作者：

Terribile, D ^{[1
]}

Trovarelli, A ^{[1
]}

de Leitenburg, C ^{[1
]}

Primavera, A ^{[1
]}

Dolcetti, G ^{[1
]}

机构：

[1] Univ Udine, Dipartimento Sci & Tecnol Chim, I-33100 Udine, Italy

来源：

CATALYSIS TODAY | 1999年 / 47卷 / 1-4期

关键词：

ceria; zirconia; catalytic combustion; TPR; CeO2-ZrO2;

D O I：

10.1016/S0920-5861(98)00292-2

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The catalytic activity of a series of CeO2-ZrO2 mixed oxides in the total oxidation of methane and light hydrocarbons has been investigated. The influence of dopants like Mn and Cu has also been studied. It is shown that both MnOx and CuO at low loading dissolve within the ceria-zirconia lattice. This strongly influences the redox behaviour of the catalysts by promoting low-temperature reduction of Ce4+. In addition, the ternary oxides show better stability to repeated redox cycles, which is attributed to the presence of ZrO2. The catalytic activity of pure CeO2 is also enhanced in the presence of ZrO2, reaching a maximum with Ce0.92Zr0.08O2; a further promotion of activity is observed with the introduction of MnOx and CuO dissolved into CeO2-ZrO2 lattice. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：133 / 140

页数：8

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