A novel KCaNi/α-Al2O3 catalyst for CH4 reforming with CO2

被引：43

作者：

Hou, ZY ^{[1
]}

Yokota, O ^{[1
]}

Tanaka, T ^{[1
]}

Yashima, T ^{[1
]}

机构：

[1] RITE, Chem Res Grp, Kizu, Kyoto 6190292, Japan

来源：

CATALYSIS LETTERS | 2003年 / 87卷 / 1-2期

关键词：

CH4; dry reforming; KCaNi catalyst; TPR; TPSR; XPS;

D O I：

10.1023/A:1022849009431

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：

A potassium and calcium co-promoted nickel catalyst (KCaNi/alpha-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 H-2-TPR characterizations indicated that (i) Ca and K strengthened the interaction between Ni and alpha-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 O-2-TPO) disclosed that K reduced carbon formation via CH4 decomposition.

引用

页码：37 / 42

页数：6

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