A Novel KCaNi/α-Al2O3 Catalyst for CH4 Reforming with CO2

被引：2
|
作者：
Zhaoyin Hou
Osamu Yokota
Takumi Tanaka
Tatsuaki Yashima
机构：
[1] Research Institute of Innovative Technology for the Earth (RITE),Chemical Research Group
来源：
Catalysis Letters | 2003年 / 87卷
关键词：
CH; dry reforming; KCaNi catalyst; TPR; TPSR; XPS;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A potassium and calcium co-promoted nickel catalyst (KCaNi/α-Al2O3) prepared by a direct impregnation method possessed a high activity, high stability and excellent coke resistance properties in CH4 reforming with CO2. XRD, XPS and H2-TPR characterizations indicated that (i) Ca and K strengthened the interaction between Ni and α-Al2O3 and promoted the formation of a unique NiAl2O4 phase on the surface of the catalyst and (ii) Ca and K increased the dispersion of Ni and retarded its sintering. Coking reactions (CH4 temperature-programmed decomposition and O2-TPO) disclosed that K reduced carbon formation via CH4 decomposition.
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收藏
页码：37 / 42
页数：5
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