MODEL OF ACTIVE SURFACE OF IRON CATALYST FOR AMMONIA-SYNTHESIS

被引：32
|
作者：
ARABCZYK, W
NARKIEWICZ, U
KALUCKI, K
机构：
[1] Technical University of Szczecin, Institute of Inorganic Chemical Technology, Pułaskiego 10
来源：
VACUUM | 1994年 / 45卷 / 2-3期
关键词：
D O I：
10.1016/0042-207X(94)90186-4
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The AES method has been used to investigate the iron-potassium-oxygen sysem. A new model of the iron catalyst for the ammonia synthesis reaction has been proposed, on the grounds of studies on the interactions between potassium, oxygen, and nitrogen on the iron surface. In this simple model the active sites are located under the layer of potassium atoms and on the layer of iron atoms. A part of those sites are occupied by oxygen atoms which stabilize the potassium atoms on the catalyst surface at the temperature of the ammonia synthesis reaction. The promoting action of potassium in this reaction is effected by the electron transfer from potassium to the iron surface covered with oxygen.
引用
收藏
页码：267 / 269
页数：3
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