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)]
Title
Transient drift spectroscopy for the determination of the surface reaction kinetics of CO2 methanation
Published in
Chemical Engineering Science
Volume
49
Issue
24A
Pages
4801-4809
Date
1994
ISSN
0009-2509
Note
CAN 122:218108
51-11
Fossil Fuels, Derivatives, and Related Products
Inst. Genie Chim.,Ecole Polytech. Fed.,Lausanne,Switz.
Journal
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)
Record creation date
2006-04-18
