Four thallium(I) uranates(VI), their preparation, structure and properties / Volkovich VA,Lain MB,Griffiths TR,John MCD,Lewin B // JOURNAL OF NUCLEAR MATERIALS. - 2005. - V. 344, l. 1-3. - P. 73-78.

ISSN/EISSN:

0022-3115 / нет данных

Type:

Article; Proceedings Paper

Abstract:

Four thallium(I) uranates(VI), Tl4UO5, Tl2UO4, Tl2U2O7 and Tl2U3O10, were prepared and their IR, and, for the first time, their Raman, electronic and X-ray absorption (EXAFS) spectra have been measured. These uranates are thermally stable under nitrogen up to 660 degrees C but above this temperature they decompose and their uranium content increases, due to loss of Tl2O. The thermal stability of these uranates increases with decreasing thallium content. Comparison with the reported values for the standard enthalpies of formation of the corresponding alkali metal uranates, which are essentially cation independent, allows suggested values for the above uranates, respectively, of -2437, -1900, -3182, and -4437 U mol (-1). Structural information and atom arrangements were obtained from analysis of powder XRD and EXAFS spectroscopy measurements. U-O distances, both primary and secondary, were obtained from EXAFS measurements and these were essentially identical with those calculated from vibrational IR spectra. (c) 2005 Elsevier B.V. All rights reserved.

Author keywords:

ALKALI-METAL URANATES; SPECTRA; TEMPERATURE; RUBIDIUM

DOI:

10.1016/j.jnucmat.2005.04.019

Web of Science ID:

ISI:000231648500015

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	SEP 1
Note	11th International Symposium on Thermodynamics of Nuclear Materials, Karlsruhe, GERMANY, SEP 06-09, 2004
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
Keywords-Plus	ALKALI-METAL URANATES; SPECTRA; TEMPERATURE; RUBIDIUM
Research-Areas	Materials Science; Nuclear Science \& Technology
Web-of-Science-Categories	Materials Science, Multidisciplinary; Nuclear Science \& Technology
Author-Email	volkovich@dpt.ustu.ru T.R.Griffiths@chem.leeds.ac.uk
ResearcherID-Numbers	Volkovich, Vladimir/K-8339-2012
ORCID-Numbers	Volkovich, Vladimir/0000-0003-4438-1194
Number-of-Cited-References	18
Usage-Count-Since-2013	4
Journal-ISO	J. Nucl. Mater.
Doc-Delivery-Number	961FY