Structural investigations of PuIII phosphate by X-ray diffraction, MAS-NMR and XANES spectroscopy

被引:18
|
作者
Popa, Mann [1 ]
Raison, Philippe E. [1 ]
Martel, Laura [1 ]
Martin, Philippe M. [2 ]
Prieur, Damien [1 ]
Solari, Pier L. [3 ]
Bouexiere, Daniel [1 ]
Konings, Rudy J. M. [1 ]
Somers, Joseph [1 ]
机构
[1] Commiss European Communities, Joint Res Ctr, Inst Transuranium Elements, D-76125 Karlsruhe, Germany
[2] CEA, DEN, DEC SESC, F-13108 St Paul Les Durance, France
[3] Synchrotron SOLEIL, F-91190 St Aubin, France
关键词
Crystal structure; Monazite; Oxidation state; Plutonium(III) phosphate; SOLID-STATE SYNTHESIS; TEMPERATURE HEAT-CAPACITY; BOND-VALENCE PARAMETERS; MONAZITE-TYPE COMPOUNDS; CRYSTAL-CHEMISTRY; MIXED OXIDES; PLUTONIUM; URANIUM; IMMOBILIZATION; NEPTUNIUM;
D O I
10.1016/j.jssc.2015.07.002
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
PuPO4 was prepared by a solid state reaction method and its crystal structure at room temperature was solved by powder X-ray diffraction combined with Rietveld refinement. High resolution}CANES measurements confirm the +III valence state of plutonium, in agreement with valence bond derivation. The presence of the americium (as decay product of plutonium) in the +III oxidation state was determined based on XANES spectroscopy. High resolution solid state P-31 NMR agrees with the XANES results and the presence of a solid-solution. (C) 2015 Elsevier Inc.. Published by Elsevier Inc. All rights reserved.
引用
收藏
页码:169 / 174
页数:6
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