Abstract
Oxidation of CO over the surface of SnO 2 and Pd/SnO 2 catalysts has been investigated with a view to understand the role of Pd metal particles which are known to improve the catalytic activity. The reaction occurs through the incorporation of lattice oxygen and an oxidized surface of the catalyst facilitates the CO oxidation. For Pd/SnO 2 significant CO oxidation occurs even at room temperature as monitored by CO pulse injection technique. Disproportionation of CO into CO 2 and carbon has been observed in the region 350 K ⩽ T⩽ 425 K. From 119Sn Mössbauer investigations the existence of Sn 2+ species in the support matrix has been observed and its extent is affected by Pd incorporation. The effect of oxygen and/or hydrogen pretreatment of Pd/SnO 2 catalyst at different temperatures on its catalytic activity has been discussed.
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.
