从NH4Cl和氢化铀混合床开始的常压UCl3合成

IF 1.6 3区化学 Q3 CHEMISTRY, ANALYTICAL

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2025-08-21 DOI:10.1007/s10967-025-10327-4

Nathan Rood, Michael F. Simpson

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引用次数: 0

摘要

由于使用有害气体成分或可能形成氯化铀或铀氧化物和氧氯化物，目前合成未混合的氯化铀的方法存在重大的安全和污染问题。报道了一种在不产生有利于+3氧化态的有害气体的固体条件下氯化氢化铀的新方法。该工艺以固体NH4Cl粉末和UH3为原料，通过两步反应生成UCl3。第一步是加热到593 K，形成氨-铀-氯化中间体。第二步，在氩气环境下，将中间体加热至923k进行热分解，生成UCl3。产品的Cl/U比值为2.8 ~ 3.1。

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Ambient pressure UCl3 synthesis starting with a mixed bed of NH4Cl and uranium hydride

Current methods of synthesizing unblended UCl₃ have significant safety and contamination concerns due to the use of hazardous gaseous components or the potential for formation of UCl₄ or uranium oxides and oxychlorides. A new method for chlorinating uranium hydride in the solid state without hazardous gas that favors the +3 oxidation state is reported. This process forms UCl₃ via a two-step reaction using solid NH₄Cl powder and UH₃. The first step involves heating to 593 K to form an ammonium-uranium-chloride intermediate. In the second step, the intermediate is thermally decomposed by heating to 923 K under ambient pressure in an argon atmosphere to form UCl₃. Cl/U ratios of product ranged from 2.8 to 3.1.

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来源期刊

Journal of Radioanalytical and Nuclear Chemistry 化学-分析化学

CiteScore

2.80

自引率

18.80%

发文量

504

审稿时长

2.2 months

期刊介绍： An international periodical publishing original papers, letters, review papers and short communications on nuclear chemistry. The subjects covered include: Nuclear chemistry, Radiochemistry, Radiation chemistry, Radiobiological chemistry, Environmental radiochemistry, Production and control of radioisotopes and labelled compounds, Nuclear power plant chemistry, Nuclear fuel chemistry, Radioanalytical chemistry, Radiation detection and measurement, Nuclear instrumentation and automation, etc.