THE EFFECT OF CATALYST PREPARATION ON THE PERFORMANCE OF MAGNESIUM FLUORIDE SUPPORTED RUTHENIUM

Authors
WOJCIECHOWSKA M PIETROWSKI M LOMNICKI S CZAJKA B
Citation
M. Wojciechowska et al., THE EFFECT OF CATALYST PREPARATION ON THE PERFORMANCE OF MAGNESIUM FLUORIDE SUPPORTED RUTHENIUM, Catalysis letters, 46(1-2), 1997, pp. 63-69
Citations number
34
Categorie Soggetti
Chemistry Physical
Journal title
Catalysis letters → ACNP
ISSN journal
1011372X
Volume
46
Issue
1-2
Year of publication
1997
Pages
63 - 69
Database
ISI
SICI code
1011-372X(1997)46:1-2<63:TEOCPO>2.0.ZU;2-D
Abstract
The effect of different ruthenium precursors on the structure and cata lytic properties of the Ru/MgF2 system was studied with such methods a s IR, XPS, EPR and catalytic test reactions. The adsorption of probe m olecules (CO and O-2) revealed a greater ability to transfer an electr on from ruthenium in the case of samples obtained from Ru-3(CO)(12) th an in the case of samples obtained from RuCl3. Besides, metallic cryst allites of different size were obtained depending on the precursor use d. Namely, the average cluster size was 1.5 times smaller for carbonyl samples in comparison with chloride ones. Both series of preparations were active in redox or acid-base reactions. The activities of the ca rbonyl samples were higher than those of the chloride catalysts, parti cularly in reactions that require the presence of acid centers.