Cuboctahedral oxygen clusters in U3O7

被引：43

作者：

Garrido, F

Ibberson, RM

Nowicki, L

Willis, BTM

机构：

[1] Chem Crystallog Lab, Oxford OX1 3PD, England

[2] Univ Paris 11, IN2P3, CNRS, Ctr Spectrometrie Nucl & Spectrometrie Masse, F-91405 Orsay, France

[3] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England

[4] Andrzej Soltan Inst Nucl Studies, PL-00681 Warsaw, Poland

来源：

JOURNAL OF NUCLEAR MATERIALS | 2003年 / 322卷 / 01期

关键词：

D O I：

10.1016/S0022-3115(03)00318-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

When UO2 is oxidised to U3O7, the positions in the crystal lattice of all the uranium atoms and of about 70%, of the oxygen atoms are hardly affected. The remaining oxygen atoms occupy new sites which are located 310 pm along <110> vectors from the holes in the fluorite framework of UO2. These results, which are based on the analysis of neutron diffraction powder data, are consistent with the concept that excess oxygen in U3O7 is accommodated in cuboctahedral anionic clusters. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：87 / 89

页数：3

共 15 条

[1]

[Anonymous], MSH805 LANSCE LOS AL

[2]

BERG L, 1977, GMELIN HDB ANORGA C1

[3] CUBOCTAHEDRAL ANION CLUSTERS IN FLUORITE-RELATED SUPERSTRUCTURES - GEOMETRICAL CALCULATIONS [J].

BEVAN, DJM ;

LAWTON, SE .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1986, 42 :55-58

[4] THE CRYSTAL-STRUCTURE OF BETA-U4O9-Y [J].

BEVAN, DJM ;

GREY, IE ;

WILLIS, BTM .

JOURNAL OF SOLID STATE CHEMISTRY, 1986, 61 (01) :1-7

[5]

Cordfunke E.H.P., 1969, CHEM URANIUM

[6]

Golubev A. M., 1986, Soviet Physics - Crystallography, V31, P281

[7] SYNTHESIS OF UO2.37 AT HIGH PRESSURE [J].

HOEKSTRA, H ;

SIEGEL, S ;

CHARPIN, P .

JOURNAL OF INORGANIC & NUCLEAR CHEMISTRY, 1968, 30 (02) :519-&

[8] URANIUM-OXYGEN SYSTEM AT HIGH PRESSURE [J].

HOEKSTRA, HR ;

SIEGEL, S ;

GALLAGHE.FX .

JOURNAL OF INORGANIC & NUCLEAR CHEMISTRY, 1970, 32 (10) :3237-&

[9] THE LOW TEMPERATURE OXIDATION OF UO2 AND U4O9 [J].

HOEKSTRA, HR ;

SANTORO, A ;

SIEGEL, S .

JOURNAL OF INORGANIC & NUCLEAR CHEMISTRY, 1961, 18 :166-178

[10] A review of the oxidation of uranium dioxide at temperatures below 400°C [J].

McEachern, RJ ;

Taylor, P .

JOURNAL OF NUCLEAR MATERIALS, 1998, 254 (2-3) :87-121

← 1 2 →