Abstract
The influence of forced composition cycling was investigated on the oxidation of CO over vanadium pentoxide catalyst. Cycling was effected by a square wave in the feed composition ratio of CO to O 2 by alternating the feed ratio between two predetermined values at regular intervals. The time average rates obtained under the transient conditions were observed to be a function of the feed composition ratio, the amplitude and the frequency of cycling. Modelling of the results was undertaken and a three-step model suggesting desorption to give CO 2 an the rate controlling step was obtained at 395°C whilst at a higher temperature of 440°C a two-step model involving equally important chemisorption and reoxidation steps was found to adequately predict the data.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call