Stable carbon dioxide reforming of methane over modified Ni/Al2O3 catalysts

被引:0
|
作者
Jae-Sung Choi
Kwang-Ik Moon
Young Gul Kim
Jae Sung Lee
Cheol-Hyun Kim
David L. Trimm
机构
[1] Pohang University of Science and Technology (POSTECH),Department of Chemical Engineering
来源
Catalysis Letters | 1998年 / 52卷
关键词
coke deposition; Ni/Al; O; catalysts; carbon dioxide reforming; Mn-modified Ni/Al; O; catalyst;
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中图分类号
学科分类号
摘要
CO2 reforming of methane was studied over modified Ni/Al2O3 catalysts. The metal modifiers were Co, Cu, Zr, Mn, Mo, Ti, Ag and Sn. Relative to unmodified Ni/Al2O3, catalysts modified with Co, Cu and Zr showed slightly improved activity, while other promoters reduced the activity of CO2 reforming. Mn-promoted catalyst showed a remarkable reduction in coke deposition, while entailing only a small reduction in catalytic activity compared to unmodified catalyst. The catalysts prepared at high calcination temperatures showed higher activity than those prepared at low calcination temperature. The Mn-promoted catalyst showed very low coke deposition even in the absence of diluent gas and the activity changed only slightly during 100 h operation.
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页码:43 / 47
页数:4
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