Carbon dioxide reforming of methane over co-precipitated Ni-Ce-ZrO2 catalysts

被引：75

作者：

Potdar, HS ^{[1
]}

Roh, HS ^{[1
]}

Jun, KW ^{[1
]}

Ji, M ^{[1
]}

Liu, ZW ^{[1
]}

机构：

[1] Korea Res Inst Chem Technol, Div Chem Technol, Taejon 305600, South Korea

来源：

CATALYSIS LETTERS | 2002年 / 84卷 / 1-2期

关键词：

co-precipitation/digestgion; cubic Ce1-xZrxO2; CH4; CO2; Ni; reforming;

D O I：

10.1023/A:1021036920308

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：

An active and relatively stable Ni-Ce-ZrO2 catalyst has been designed and prepared conveniently by a novel one-step co-precipitation/digestion method. This catalyst exhibited higher stability compared with a catalyst having the same composition but prepared using the conventional impregnation method. It was found that 15% Ni (w/w) co-precipitated with Ce-ZrO2 making the cubic phase of Ce0.8Zr0.2O2 gave synthesis gas with CH4 conversion more than 97% at 800 degreesC and that the activity was maintained for 100 h during the reaction. The higher activity, conversion and stability of these catalysts are mainly related to the nano-crystalline nature of cubic Ce1-xZrxO2 producing strong interaction with finely dispersed nano-sized NiOx crystallites.

引用

页码：95 / 100

页数：6

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