Abstract
Two different air-aged lutetium oxide samples, ex-hydroxide and ex-oxalate, have been characterized by XPS. In the original samples there is an extensive contamination by CO 2- 3 OH - species (O(1s) and C(1s) at 531.6 and 289.4 eV respectively, while the O(1s) peak of O 2- ions of the lattice had a BE of 529.3 eV), which has been confirmed by comparison with the spectra of three different lutetium hydroxide/carbonate salts. Fitting of the Lu(4f) level with two doublets differing in energy by 1.2 eV (Lu(4f 7 2 ) BEs at 7.2 and 8.4 eV) has shown two types of lutetium ions coordinated, one by O 2- ions of the oxide framework and the other by CO 2- 3 OH - groups of the contaminating phase. “In situ” outgassing of samples at high temperatures (298< T<973 K) as well as CO 2 adsorption at 298 K have shown that both oxides present different carbonation/ hydration degrees depending on the preparation method.
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.
