Comparative study of rubidium and cesium as promoters in carbon-supported ruthenium catalysts for ammonia synthesis

被引：25
|
作者：
Larichev, Yu. V. [1 ]
Shlyapin, D. A. [2 ]
Tsyrul'nikov, P. G. [2 ]
Bukhtiyarov, V. I. [1 ,3 ]
机构：
[1] Boreskov Inst Catalysis, Novosibirsk 630090, Russia
[2] Inst Hydrocarbons Proc, Omsk 644040, Russia
[3] Novosibirsk State Univ, Novosibirsk 630090, Russia
来源：
CATALYSIS LETTERS | 2008年 / 120卷 / 3-4期
关键词：
ammonia synthesis; ruthenium catalysts; Cs; Rb; promoter-support interaction; XPS; TEM;
D O I：
10.1007/s10562-007-9270-y
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：
Sibunit-supported Ru-catalysts promoted with cesium or rubidium compounds have been comparatively studied with XPS. The cesium promoter interacts both with support and with active component. The absence of the promoter-support interaction in the case of rubidium provides a stronger interaction between promoter and active component compared to the cesium-based catalysts. These differences in the promoter-support and promoter-metal interactions are exhibited when a sequence of ruthenium and alkali introduction are changed.
引用
收藏
页码：204 / 209
页数：6
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