Formation and characteristic properties of carbonaceous species on nickel-magnesia solid solution catalysts during CH4-CO2 reforming reaction

被引：71

作者：

Chen, YG ^{[1
]}

Tomishige, K ^{[1
]}

Fujimoto, K ^{[1
]}

机构：

[1] UNIV TOKYO,GRAD SCH ENGN,DEPT APPL CHEM,BUNKYO KU,TOKYO 113,JAPAN

来源：

APPLIED CATALYSIS A-GENERAL | 1997年 / 161卷 / 1-2期

关键词：

methane reforming with carbon dioxide; magnesia supported nickel catalyst; solid solution; deposited carbon; temperature-programmed hydrogenation;

D O I：

10.1016/S0926-860X(97)00106-3

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：

Carbonaceous species formed during the reforming of CH4 with CO2 over a series of NixMg1-xO solid solution catalysts and MgO-supported Ni catalysts were characterized by temperature-programmed hydrogenation (TPH) method. Tao peaks appeared in the TPH spectra: one between 550 and 700 K (alpha-carbon) and another above 873 K (beta-carbon). It was found that a good relationship exists between the quantity of alpha-carbon species and the catalytic activity, indicating that alpha-carbon should be the reaction intermediate. In addition, the amount of beta-carbon increased with increasing reaction time, especially on the supported Ni/MgO catalysts which make inactive carbon during the CH4-CO2 reforming reaction. (C) 1997 Elsevier Science B.V.

引用

页码：L11 / L17

页数：7

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