Volatility of PuO2 in Nonreducing Atmospheres
The vapor pressure of plutonium dioxide (PuO2) was investigated in the range 1450° to 1775°C in air, argon, and oxygen atmospheres by a transpiration technique. There were strong indications that PuO2 can vaporize congruently or as a suboxide species, depending on the atmosphere. The δH°298 for vapo...
Gespeichert in:
| Veröffentlicht in: | Journal of the American Ceramic Society 1964-01, Vol.47 (12), p.610-614 |
|---|---|
| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Zusammenfassung: | The vapor pressure of plutonium dioxide (PuO2) was investigated in the range 1450° to 1775°C in air, argon, and oxygen atmospheres by a transpiration technique. There were strong indications that PuO2 can vaporize congruently or as a suboxide species, depending on the atmosphere. The δH°298 for vaporization in 1 atm of oxygen is approximately 154,000 cal per mole. The estimated standard free energy of formation (δG°f) of gaseous PuO2 is −121,000 + 10.7 T from 1227° to 1827°C. |
|---|---|
| ISSN: | 0002-7820 1551-2916 |
| DOI: | 10.1111/j.1151-2916.1964.tb13116.x |