Interaction of thorium(IV) with nitrate in aqueous solution: medium effect or weak complexation?

被引:10
|
作者
Di Bernardo, Plinio [1 ]
Zanonato, Pierluigi [1 ]
Rao, Linfeng [2 ]
Bismondo, Arturo [3 ]
Endrizzi, Francesco [1 ]
机构
[1] Univ Padua, Dipartimento Sci Chim, I-35131 Padua, Italy
[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA
[3] CNR, Ist Chim Inorgan & Superfici, I-35127 Padua, Italy
关键词
TRIVALENT LANTHANIDE; SOLVENT-EXTRACTION; FUEL-CYCLE; URANIUM(VI); ACETATE; THERMODYNAMICS; POWER; ION;
D O I
10.1039/c1dt10325c
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Microcalorimetric titrations were performed to study the Th(IV)/nitrate interaction in aqueous solution. The results show the formation of a weak mononuclear complex of Th(IV) with nitrate and allow the determination of the complexation thermodynamic parameters at 298 K and ionic strength 1.0 mol dm(-3). The reaction is endothermic and entropy driven. Data and comparison with similar actinide(IV) complexes allow to confirm the inner-sphere nature of the Th(NO3)(3+) complex.
引用
收藏
页码:9101 / 9105
页数:5
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