|
|||||
|
|
The formation and stability of hydrated and anhydrous uranyl phosphates |
|
| Authors: | H. Barten E. H. P. Cordfunke |
| Affiliation: | Netherlands Energy Reasearch Foundation, ECN, Petten The Netherlands |
| Abstract: | The stabilities of the hydrated uranyl phosphates (UO2)3(PO4)2 · 4 H2O, UO2HPO4 · 4 H2O, and UO2(H2PO4) · 3 H2O have been reinvestigated. The compounds identified by thermal analysis have been prepared isothermally and characterized by their strongest X-ray reflections. During dehydration, oxygen was not evolved and the crystalline compounds (UO2)3(PO4)2, (UO2)2P2O7, UO2(PO3)2, and probably (UO2)3P4O)13 were found. At still higher temperatures, the uranyl phosphates are reduced. The decomposition products lose phosphorus oxide above 1300–1400°C. The present results are summarized in a tentative pseudo-binary phase diagram UOx(x = 3 to 2)—UO2(PO3)2. |
| Keywords: | To whom all correspondence should be addressed. |
| 本文献已被 ScienceDirect 等数据库收录！ | |