Oxidative ammonolysis of uranium(IV) fluorides to uranium(VI) nitride

被引：32

作者：

Yeamans, Charles B. ^{[2
]}

Silva, G. W. Chinthaka ^{[1
]}

Cerefice, Gary S. ^{[1
]}

Czerwinski, Kenneth R. ^{[1
]}

Hartmann, Thomas ^{[1
,5
]}

Burrell, Anthony K. ^{[3
]}

Sattelberger, Alfred P. ^{[1
,3
,4
]}

机构：

[1] Univ Nevada, Harry Reid Ctr Environm Studies, Las Vegas, NV 89154 USA

[2] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA

[3] Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA

[4] Argonne Natl Lab, Argonne, IL 60517 USA

[5] Idaho State Univ, INSE, Idaho Falls, ID 83402 USA

来源：

JOURNAL OF NUCLEAR MATERIALS | 2008年 / 374卷 / 1-2期

关键词：

D O I：

10.1016/j.jnucmat.2007.06.022

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Actinide nitrides, in particular UN, are being considered as fuel types for advanced reactor systems. Here, we demonstrate a low-temperature synthesis route on uranium that could be developed into a commercial fabrication process for UN and mixed actinide nitride fuels. UN was successfully synthesized from UO2 by first reacting with NH4HF2 in a ball mill at 20 degrees C to form tetravalent ammonium uranium fluorides. Then, reaction with an ammonia atmosphere at 800 degrees C oxidized tetravalent uranium fluorides to hexavalent UN2. The final product, UN, was obtained by decomposing UN2 at I 100 degrees C under argon to produce UN through an intermediate phase Of U2N3. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：75 / 78

页数：4

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