Abstract
An examination has been made of how structural factors influence the measured values of effective diffusivity using the steady(Wicke-Kallenbach) and unsteady (chromatographic) state methods. For a solid with a typical bidisperse pore size distribution it is shown that the steady state method tends to give longer values. This suggests that the relative dominating characteristics are associated with the pore size distribution rather than the influence of dead-end pores. Such an explanation is internally consistent with tortuosity effects. The development of a reliable method of determining diffusivities for use in effectiveness factor calculations is dependent on the more precise identification of the structural characteristics along the lines presented here.
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.
