Carbon Deposits Formed on the Surface of Ru–Ni Catalysts During the Mixed Reforming of Methane Process

Monometallic nickel and bimetallic ruthenium–nickel catalysts supported onto aluminum oxide without additives and aluminum oxide modified with MgO and CaO were prepared by an impregnation method. The catalysts were tested in the process of the mixed reforming of methane, and their properties were ch...

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Bibliographic Details
Published in:Kinetics and catalysis 2018-05, Vol.59 (3), p.372-377
Main Authors: Mierczynski, P., Ciesielski, R., Zakrzewski, M., Dawid, B., Mosinska, M., Maniukiewicz, W., Dubkov, S., Gromov, D., Szynkowska, M. I., Witonska, I., Shtyka, O., Maniecki, T.
Format: Article
Language:English
Subjects:
Additives
Aluminum oxide
Bimetals
Carbon content
Catalysis
Catalysts
Catalytic activity
Chemistry
Chemistry and Materials Science
Electron microscopes
Magnesium oxide
Methane
Nickel
Organic carbon
Physical Chemistry
Reforming
Ruthenium
Scanning electron microscopy
Thermogravimetry
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Summary:Monometallic nickel and bimetallic ruthenium–nickel catalysts supported onto aluminum oxide without additives and aluminum oxide modified with MgO and CaO were prepared by an impregnation method. The catalysts were tested in the process of the mixed reforming of methane, and their properties were characterized by thermogravimetry, scanning electron microscopy, and X-ray diffractometry. The total organic carbon content of the catalysts was also measured. The promoting effect of ruthenium and structural promoters on the catalytic activity of Ni/Al 2 O 3 was confirmed. The Ru–Ni/MgO–Al 2 O 3 catalyst exhibited the highest stability and activity; this fact can be explained by the increased adsorption of methane on the surface of ruthenium–nickel clusters.
ISSN:0023-1584
1608-3210
DOI:10.1134/S002315841803014X