DOUBLE PROMOTION OF PALLADIUM SILICA CATALYSTS BY IRON AND MAGNESIUM-OXIDE IN THE SYNTHESIS OF METHANOL FROM CARBON-MONOXIDE AND HYDROGEN

被引：0

作者：

LIETZ, G ^{[1
]}

NIMZ, M ^{[1
]}

VOLTER, J ^{[1
]}

LAZAR, K ^{[1
]}

GUCZI, L ^{[1
]}

机构：

[1] HUNGARIAN ACAD SCI, INST ISOTOPES, H-1525 BUDAPEST, HUNGARY

来源：

APPLIED CATALYSIS | 1988年 / 45卷 / 01期

关键词：

Carbon Monoxide - Catalysis - Hydrogen - Magnesia - Methanol--Synthesis;

D O I：

10.1016/S0166-9834(00)82394-5

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：

The structure and catalytic properties of 2 wt.-% Pd/SiO2 catalysts promoted with 2 wt.-% MgO and 0.2-5 wt.-% iron have been investigated. Catalysts were characterized by TPR, hydrogen chemisorption, and Moessbauer spectroscopy and their catalytic performance in methanol formation was also measured. At 16 at.-% iron a sharp maximum was observed in the activity which can be interpreted as being due to simultaneous promotion with iron and MgO. Independent mechanisms of promotion were found for the two modifiers: iron influenced the metallic component by forming bimetallic PdFe particles while MgO changed the properties of silica in a favorable way.

引用

页码：71 / 83

页数：13