Abstract
AbstractTo clarify the mechanism and get the accurate kinetic parameters of CO2–CO reaction with magnetite, 13CO2–CO isotope exchange technique was used to determine the rate constants of CO2 dissociation on the surface of magnetite from 1073 to 1373 K. The real interfacial rate constant was estimated by considering the gas phase mass transfer along a plate. The relationship of the rate constant and CO2/CO ratio was expressed by the formula of kc = k0 (CO2/CO)−1−m, m represents the effect of CO2/CO ratio on the activity of oxygen in iron oxide. The apparent activation energy of the reaction between CO2–CO gas and magnetite was calculated to 161, 175 ± 15, 198, and 197 ± 16 kJ mol−1 for CO2/CO ratios of 4.0, 5.0, 6.0, and 10.0, respectively. This dependence relationship may be caused by the decrease of free electron in magnetite phase with the increase of CO2/CO ratio.
Sign-in/Register to access full text options 
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 callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
