Studies on carbon deposition in CO2 reforming of CH4 over nickel-magnesia solid solution catalysts

被引：390

作者：

Tomishige, K ^{[1
]}

Chen, YG ^{[1
]}

Fujimoto, K ^{[1
]}

机构：

[1] Univ Tokyo, Sch Engn, Dept Appl Chem, Bunkyo Ku, Tokyo 1138656, Japan

来源：

JOURNAL OF CATALYSIS | 1999年 / 181卷 / 01期

关键词：

carbon deposition; CO2 reforming of CH4; nickel-magnesia solid solution catalyst; thermogravimetric analysis; whisker carbon;

D O I：

10.1006/jcat.1998.2286

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：

Carbon formation behavior under CH4-CO2 reaction and through CH4 decomposition and CO disproportionation was investigated over Ni0.03Mg0.97O solid solution, supported Ni/MgO, and NiO-Al2O3 catalysts by means of thermogravimetric analysis (TGA) and transmission electron microscopy (TEM). Ni0.03Mg0.97O showed high resistance to carbon formation in CO2 reforming of methane and the selectivity to carbon formation was much lower than two other catalysts. It is suggested that CO2 plays an important role in the inhibition of carbon formation on Ni0.03Mg0.97O through the activation of CO2 at the interface between small nickel particles and the support surface. (C) 1999 Academic Press.

引用

页码：91 / 103

页数：13

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