Details

Autor(en) / Beteiligte

• Poncet, F
• Valdivieso, F
• Gibert, R
• Pijolat, M

Titel

In situ infrared spectroscopic study on uranium oxides during UO sub(3) carboreduction

Ist Teil von

• Materials chemistry and physics, 1999-02, Vol.58 (1), p.55-57

Erscheinungsjahr

1999

Link zum Volltext

Quelle

Elsevier Journal Backfiles on ScienceDirect (DFG Nationallizenzen)

Beschreibungen/Notizen

• Carboreduction of UO sub(3) 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 UO sub(3) to U sub(3)O sub(8) by carbon at 440 degree C and (ii) reduction at 590 degree C of U sub(3)O sub(8) to UO sub(2) by carbon. No carbon monoxide was observed during the reaction. Nevertheless, formation of carbonate species is suggested at temperature above 550 degree C with absorption bands around 1005 and 1300 cm super(-1).