Abstract
Pr 7O 12 is an intermediate praseodymium oxide of mixed oxidation state. It is single phase with metal atoms occupying different types of crystallographic sites. In contact with dilute acid, among other solvents, the single-phase compound loses Pr 3+ ions to the solution and the residue is oxidized to PrO 2. The morphology of the reaction, studied by electron microscopy, indicates that the dissolution follows extended crystal defects, probably dislocations, and involves the removal of all the oxide in the reaction path. This requires the transport of oxygen and electrons in the reaction zone where praseodymium is reduced with the concomitant oxidation of material adjacent to it. This reaction occurs without the destruction of the original framework because Pr 7O 12 and the other intermediate oxides are fluorite-related and transform to fluorite-type PrO 2 without reconstruction.
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.
