In situ infrared spectroscopic study of uranium oxides during UO3 carboreductionReport as inadecuate




In situ infrared spectroscopic study of uranium oxides during UO3 carboreduction - Download this document for free, or read online. Document in PDF available to download.

1 SPIN-ENSMSE - Centre Sciences des Processus Industriels et Naturels 2 ProcESS-ENSMSE - Département Procédés et évolution des systèmes avec solides 3 P2MC-ENSMSE - Département Poudres et Matériaux Multi-Composants

Abstract : Carboreduction of UO3 has been studied by in situ infrared spectroscopy in order to detect the presence of carbon monoxide during the reduction. From thermogravimetry, the reaction was observed to occur in two steps: i Reduction of UO3 to U3O8 by carbon at 440°C and ii reduction at 590°C of U3O8 to UO23 by carbon. No carbon monoxide was observed during the reaction. Nevertheless, formation of carboxylate species is observed at temperature below 550°C with absorption bands at 1017 and 1300 cm-1.

Keywords : uranium oxides in situ infrared spectroscopy thermogravimetry UO3 carboreduction U3O8 UO2





Author: Florence Poncet - Françoise Valdivieso - Raymonde Gibert - Michèle Pijolat -

Source: https://hal.archives-ouvertes.fr/



DOWNLOAD PDF




Related documents