New Metal-Carbon Catalysts: I. Preparation Procedure and Application Area
Kinetics and Catalysis
, E-ISSN: 1608-3210
Boreskov Institute of Catalysis SB RAS
New metal-filamentous carbon catalytic systems, which differ fundamentally from all known catalysts in structure and preparation procedure, are found. Metal-carbon catalysts are formed by decomposition of hydrocarbons over the iron-subgroup metals or their alloys. They contain metal particles anchored at the ends of the carbon filaments. By varying the conditions of hydrocarbon decomposition, one can impart desired properties to metal-carbon systems. These properties allow the use of the catalysts in complete and selective hydrogenation of unsaturated hydrocarbons and carboxylic acids, steam and CO2 methane conversion, CO methanation, Fischer-Tropsch synthesis, hydrodechlorination of chlorobenzene, dehydrogenation of n-butane, and CO oxidation. Depending on the carbon : metal ratio, the catalysts can be active in both complete and selective hydrogenation of dienes and alkynes. At high carbon : metal ratios, the selectivity to olefins is close to 100%.