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Hydrogenation of CO and CO 2 on carbon black‐supported Ru catalysts
Author(s) -
RodríguezRamos Inmaculada,
Reinoso Francisco Rodríguez,
GuerreroRuiz Antonio,
de Dios LópezGonzález Juan
Publication year - 1986
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280360205
Subject(s) - carbon black , catalysis , methane , particle size , olefin fiber , metal , carbon fibers , ruthenium , selectivity , dispersion (optics) , materials science , crystallite , methanation , inorganic chemistry , chemical engineering , chemistry , organic chemistry , metallurgy , physics , composite number , optics , composite material , engineering , natural rubber
The activity and selectivity of both unsupported Ru and carbon black‐supported Ru catalysts toward the hydrogenation of CO and CO 2 have been investigated in order to learn about the effect of metal particle size on both reactions. The specific activity for both reactions decreases with metal particle size and the product distribution obtained in the hydrogenation of CO (the hydrogenation of CO 2 only yields methane) is also a function of metal dispersion; thus, the proportion of methane produced increases and the olefin/paraffin decreases with decreasing Ru particle size. This behaviour is attributed to changes in the electronic properties of the Ru crystallites in close contact with the graphitised carbon black used as support.