Defluorination behavior and mechanism of uranium dioxide

Z. Song; X. Huang; Z. Xie; Q. Ge; R. Wang

doi:10.1007/bf02386666

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 237: Issue 1-2

Defluorination behavior and mechanism of uranium dioxide

Authors:

Z. Song

Z. Song Tianjin University Department of Chemical Engineering 300072 Tianjin P. R. China

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X. Huang

X. Huang Tianjin University Department of Chemical Engineering 300072 Tianjin P. R. China

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Z. Xie

Z. Xie Tianjin University Department of Chemical Engineering 300072 Tianjin P. R. China

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Q. Ge

Q. Ge Tianjin University Department of Chemical Engineering 300072 Tianjin P. R. China

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R. Wang

R. Wang Tianjin University Department of Chemical Engineering 300072 Tianjin P. R. China

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Pages:: 81–84

Online Publication Date:: 12 Apr 2006

Publication Date:: 17 Nov 1998

Article Category:: Research Article

DOI:: https://doi.org/10.1007/bf02386666

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Abstract

The residual fluorine in ammonium uranyl tricarbonate (AUC) cannot be removed, while a large part of residual fluorine in ammonium diuranate (ADU) can be removed, when AUC and ADU are decomposed and reduced under dry hydrogen atmosphere. UO₂ was prepared by decomposing and reducing AUC and ADU in dry hydrogen atmosphere. The defluorination kinetics of UO₂ at 500–700°C in atmosphere of 50% H₂-50% H₂O was investigated. The results show that the defluorination kinetics supports the Lindman's assertion that the residual fluorine forms a solid-solution in UO₂.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)