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
收藏
页码：121 / 127
页数：7
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