Raman spectroscopic study of uranyl complex in alkali chloride melts

被引：6

作者：

Fujii, Toshiyuki ^{[1
]}

Uda, Takeshi ^{[1
,2
]}

Iwadate, Yasuhiko ^{[3
]}

Nagai, Takayuki ^{[4
]}

Uehara, Akihiro ^{[1
]}

Yamana, Hajimu ^{[1
]}

机构：

[1] Kyoto Univ, Inst Res Reactor, Div Nucl Engn Sci, Osaka 5900494, Japan

[2] Kyoto Univ, Grad Sch Engn, Nishikyo Ku, Kyoto 6158530, Japan

[3] Chiba Univ, Grad Sch Engn, Inage Ku, Chiba 2638522, Japan

[4] Japan Atom Energy Agcy, Nucl Fuel Cycle Engn Lab, Tokai, Ibaraki 3191194, Japan

来源：

JOURNAL OF NUCLEAR MATERIALS | 2013年 / 440卷 / 1-3期

关键词：

THERMODYNAMIC PROPERTIES; MOLTEN MIXTURES; INCLUDING STEREOISOMERS; VIBRATIONAL-SPECTRA; CALCIUM CHLORIDE; CERIUM CHLORIDE; URANIUM; SALTS;

D O I：

10.1016/j.jnucmat.2013.04.010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Raman spectra of alkali chloride melts containing 3 mol% U(VI) were measured at 823 K. The complexaton of UO2Cl42- in binary mixtures of LiCl-KCl, LiCl-RbCl, and LiCl-CsCl was investigated. The spectrum of UO2Cl42- obtained was characterized by Raman active vibration modes, that is, totally symmetric stretching vibrations A(1g) (v(1): OUO) and A(1g) (v(2): UCl4), and bending vibration E-g (v(8:) UO2Cl2). The dependence of polarizing power of solvent cations on the vibrational frequencies was clarified. The vs frequencies were insensitive to the change in the polarizing power. On the other hand, the v(1) and v(2) frequencies increased with the rise of polarizing power. The Raman shifts suggest that the square bipyramidal structure of UO2Cl42- is kept in various binary alkali chlorides, while O2- and Cl- around U(VI) are clearly polarized by the increase of polarizing power. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：575 / 579

页数：5

共 26 条

[1] OBSERVATION OF A URANIUM(V) SPECIES IN MOLTEN CHLORIDE SALT SOLUTIONS [J].

ADAMS, MD ;

STEUNENBERG, RK ;

WENZ, DA .

JOURNAL OF PHYSICAL CHEMISTRY, 1963, 67 (09) :1939-&

[2] THE USE OF IONIZATION POTENTIALS .1. IONIC RADII OF THE ELEMENTS [J].

AHRENS, LH .

GEOCHIMICA ET COSMOCHIMICA ACTA, 1952, 2 (03) :155-169

[3]

Brooker H. M., 1983, ADV MOLTEN SALTS CHE, V5, P27

[4]

COOK LP, 1989, PHASE DIAGRAMS CERAM, V7

[5] Vibrational modes and structure of rare earth halide alkali halide binary melts - YBr3-ABr (A=Li, K, Cs) and YF3-KF [J].

Dracopoulos, V ;

Gilbert, B ;

Borrensen, B ;

Photiadis, GM ;

Papatheodorou, GN .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1997, 93 (17) :3081-3088

[6] Raman spectroscopic determination of formation constant of uranyl hydrolysis species (UO2)2(OH)22+ [J].

Fujii, T ;

Fujiwara, K ;

Yamana, H ;

Moriyama, H .

JOURNAL OF ALLOYS AND COMPOUNDS, 2001, 323 :859-863

[7] Thermodynamic properties of trivalent lanthanide and actinide ions in molten mixtures of LiCl and KCl [J].

Fukasawa, Kazuhito ;

Uehara, Akihiro ;

Nagai, Takayuki ;

Sato, Nobuaki ;

Fujii, Toshiyuki ;

Yamana, Hajimu .

JOURNAL OF NUCLEAR MATERIALS, 2012, 424 (1-3) :17-22

[8] Electrochemical and spectrophotometric study on neodymium ions in molten alkali chloride mixtures [J].

Fukasawa, Kazuhito ;

Uehara, Akihiro ;

Nagai, Takayuki ;

Fujii, Toshiyuki ;

Yamana, Hajimu .

JOURNAL OF ALLOYS AND COMPOUNDS, 2011, 509 (16) :5112-5118

[9]

Janz G.J., 1975, PHYS CHEM REF DATA, V4, P871

[10] A new approach to minimize pyroprocessing waste salts through a series of fission product removal process [J].

Kim, Eung-Ho ;

Park, Geun-Il ;

Cho, Yung-Zun ;

Yang, Hee-Chul .

NUCLEAR TECHNOLOGY, 2008, 162 (02) :208-218

← 1 2 3 →