Abstract
The apparent kinetics of H2S removal by a ZnO−MnO desulfurizer were studied by thermogravimetric analysis. The experimental results show that the reaction is first order with respect to H2S concentration. In the temperature range 200−400 °C, the rate was controlled, at lower temperatures, by the grain surface reaction rate and, at higher temperatures, by the rate of intrapellet diffusion, respectively. The apparent kinetic behavior could be modeled by the equivalent grain model. The activation energies of surface reaction and solid diffusion were determined to be 11.842 and 20.865 kJ/mol, respectively. An optimum reaction temperature was observed. Reasons for this and why the solid diffusion activation energy exceeded that of the surface reaction are proposed.
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.
