Transient drift spectroscopy for the determination of the surface reaction kinetics of CO2 methanation

Transient expts. were applied to the study of the adsorbed CO intermediate, (CO)a, formed during CO2 methanation on 2 wt.% Ru/TiO2 catalyst at 383 K. Step-up expts. showed that the (CO)a formation steps are inhibited by H2O and enhanced by H2. Step-down expts. showed that the (CO)a hydrogenation is not influenced by the partial pressure of water. Based on the fact that water inhibits the overall CO2 methanation, it was deduced that the rate limiting process in the overall reaction is (CO)a formation. [on SciFinder (R)]


Published in:
Chemical Engineering Science, 49, 24A, 4801-9
Year:
1994
Keywords:
Note:
CAN 122:218108
51-11
Fossil Fuels, Derivatives, and Related Products
Inst. Genie Chim.,Ecole Polytech. Fed.,Lausanne,Switz.
Journal
0009-2509
written in English.
630-08-0 (Carbon monoxide) Role: FMU (Formation, unclassified), RCT (Reactant), FORM (Formation, nonpreparative), RACT (Reactant or reagent) (adsorbed; formation of chemisorbed CO as rate-limiting step in methanation of CO2); 124-38-9 (Carbon dioxide) Role: PEP (Physical, engineering or chemical process), RCT (Reactant), PROC (Process), RACT (Reactant or reagent) (formation of chemisorbed CO as rate-limiting step in methanation of CO2)
Laboratories:




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