Investigation of CH4 reforming with CO2 on meso-porous Al2O3-supported Ni catalyst

被引：64

作者：

Hou, ZY ^{[1
]}

Yokota, O ^{[1
]}

Tanaka, T ^{[1
]}

Yashima, T ^{[1
]}

机构：

[1] Res Inst Innovat Technol Earth, Chem Res Grp, Kizu, Kyoto 6190292, Japan

来源：

CATALYSIS LETTERS | 2003年 / 89卷 / 1-2期

关键词：

methane; dry reforming; meso-porous Al2O3; TPR; TPD; TPO;

D O I：

10.1023/A:1024787913883

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：

Meso-porous Al2O3-supported Ni catalysts exhibited the highest activity, stability and excellent coke-resistance ability for CH4 reforming with CO2 among several oxide-supported Ni catalysts (meso-porous Al2O3 (Yas1-2, Yas3-8), gamma-Al2O3, gamma-Al2O3, SiO2, MgO, La2O3, CeO2 and ZrO2). The properties of deposited carbons depended on the properties of the supports, and on the meso-porous Al2O3-supported Ni catalyst, only the intermediate carbon of the reforming reaction formed. XRD and H-2-TPR analysis found that mainly spinel NiAl2O4 formed in meso-porous Al2O3 and gamma-Al2O3-supported catalysts, while only NiO was detected in gamma-Al2O3, SiO2, CeO2, La2O3 and ZrO2 supports. The strong interaction between Ni and meso-porous Al2O3 improved the dispersion of Ni, retarded its sintering and improved the activated adsorption of CO2. The coking reaction via CH4 temperature-programed decomposition indicated that meso-porous Al2O3-supported Ni catalysts were less active for carbon formation by CH4 decomposition than Ni/gamma-Al2O3 and Ni/alpha-Al2O3.

引用

页码：121 / 127

页数：7

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