Abstract
Abstract Employing molecular beam methods, we have studied the angular distribution of products desorbing from oxide-supported Pd nanoparticles during catalytic oxidation of CO. A large range of particle sizes was covered by combining preparation techniques based on (1) metal evaporation and growth and (2) electron beam lithography. Whereas the CO 2 distribution is symmetric and independent of the reaction conditions on small Pd aggregates, a strong influence of the reactant incidence angles and fluxes was observed for large particles. For the first time, these observations experimentally verify the existence of local reaction rate variations on a catalyst nanoparticle as a consequence of limited adsorbate mobility. Furthermore, the results allow us to extract in situ information about surface diffusion rates.
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.
