PREPARATION AND CHARACTERIZATION OF CHLORINE-FREE RUTHENIUM CATALYSTS AND THE PROMOTER EFFECT IN AMMONIA-SYNTHESIS .1. AN ALUMINA-SUPPORTED RUTHENIUM CATALYST

被引：133

作者：

MURATA, S ^{[1
]}

AIKA, K ^{[1
]}

机构：

[1] TOKYO INST TECHNOL,GRAD SCH NAGATSUTA,DEPT ENVIRONM CHEM & ENGN,4259 NAGATSUTA,MIDORI KU,YOKOHAMA,KANAGAWA 227,JAPAN

来源：

JOURNAL OF CATALYSIS | 1992年 / 136卷 / 01期

关键词：

D O I：

10.1016/0021-9517(92)90110-4

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：

Ru/Al2O3 catalyst prepared from Cl-free Ru carbonyl was much more active for ammonia synthesis under 1.01 bar of N2 + 3H2 than that prepared from RuCl3. The high activity was related to the high dispersion and lack of Cl. Alkali metal ion (oxide or hydroxide of Cs+, Rb+, and K+) was an effective promoter for the Cl-free Ru catalyst, suggesting that the alkali acted as an electronic promoter for Ru. The synthesis rate was maximum when the Cs/Ru ratio was as high as 10. Alkali had a strong interaction with the A1203 surface and a weak interaction with the Ru surface. © 1992.

引用

页码：110 / 117

页数：8

共 28 条

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