Co-Ru/NaY catalyst:: Advanced catalytic system for selective CO hydrogenation

被引：0
|
作者：
Guczi, L
Stefler, G
Koppány, Z
Komppa, V
Reinikainen, M
机构：
[1] Hungarian Acad Sci, Chem Res Ctr, Inst Isotope & Surface Chem, Dept Surface Chem & Catalysis, H-1525 Budapest, Hungary
[2] VTT Chem Technol, Catalysis Grp, Espoo 02044, Finland
来源：
SCIENCE AND TECHNOLOGY IN CATALYSIS 1998 | 1999年 / 121卷
关键词：
D O I：
暂无
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Co/NaY, Ru/NaY and Co-Ru/NaY samples have been prepared, characterized and studied in the CO hydrogenation. On one hand, synergism of ruthenium on cobalt in Co-Ru/NaY(I) sample was established, i.e. 0.4 wt % Ru on 4.1 wt % Co in NaY zeolite caused an increase in the rate and in the oxygenate selectivity in CO/H-2 reaction at 21 bar, while CO2 formation was fully suppressed. On the other hand, the effect of pretreatment on the rate and selectivity of Ru/NaY and Co-Ru/NaY(n) catalysts have been investigated. Direct oxidation of the ion exchanged Ru/NaY caused migration of RuO2 particles to external surface of NaY, thus, enhanced metal particle size and olefin formation, whereas no oxygenates were formed in the reaction performed at 1 bar pressure. Ruthenium nanoparticles were formed and stabilized either by He treatment or/and by added cobalt, and only a slight change was observed in the reaction parameters. The phenomenon is interpreted by the location and the size of the metal particles in NaY zeolite.
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页码：209 / 214
页数：6
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