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Kinetic modelling of methanation reaction over a CoMo/SiO 2 catalyst
Author(s) -
Chen Hong,
Adesina Adesoji A.
Publication year - 1994
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.280600116
Subject(s) - methanation , catalysis , bimetallic strip , materials science , cobalt , kinetics , carbide , chemical engineering , reaction rate , thermodynamics , inorganic chemistry , chemistry , organic chemistry , metallurgy , physics , quantum mechanics , engineering
The methanation kinetics of CO over a bimetallic catalyst containing 6Co:1 Mo:4K:100SiO 2 has been studied and compared with that over a 6Co:4K:100SiO 2 monometallic catalyst. Nine models arising from carbide, enolic and Eley–Rideal mechanisms were considered and assessed with respect to the rate data obtained for each catalyst. Interestingly, all three models which were considered statically adequate involved the dissociative adsorption of H 2 as the rate‐determining‐step (RDS). The modelling results also suggest that the introduction of Mo to Co altered the methanation behaviour of CO over cobalt kinetically but not mechanistically.