Abstract
A spatially resolved technique was developed as a novel methodology to investigate the process of effective diffusions in monolith catalysts. The technique was then applied to the investigation of methane oxidation inside a commercial 3 wt% Pd/Al2O3 monolith catalyst. The mass transfer parameters of O2 and CH4 were measured, and their effective diffusivities were calculated by a modified Bosanquet approach, which confirmed that the dominant diffusion regime in the substrate and the washcoat were molecular and Knudsen respectively. The applicability of this new approach was assessed via a comparison between simulations of the water-inhibited CH4 catalytic oxidation using either correlation or experimental-based mass transfer coefficients. This study demonstrates that careful measurement of diffusivity is essential to the accurate modelling of catalyst reaction rates.
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.
