Abstract

The possibility of producing UO₂ powder from UO₃ using microwave radiation (power 300 W) in the presence of organic compounds with amino groups: carbohydrazide (CH), acetohydroxamic (AHA), and aminoacetic (glycine) acids has been investigated. It was found that in these processes in an oxygen-free atmosphere, UO₂ is produced from UO₃, and in an air, U₃O₈. It was shown that under the action of microwave radiation in the presence of CH and AHA, powdered UO₂ are synthesized from UO₃. The physical properties of the powders obtained (bulk density with tapping 2.6–2.7 g/cm³, specific surface area up to 3.2 m²/g, moisture content less than 0.1 wt %) meet the requirements for ceramic-quality powders in the production of fuel pellets.

中文翻译：

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微波辐射从三氧化二铀生产二氧化铀粉末的应用

摘要

已经研究了在具有氨基的有机化合物存在下使用微波辐射（功率300 W）从UO ₃制备UO ₂粉末的可能性，这些化合物包括氨基甲酰肼（CH），乙酰羟肟酸（AHA）和氨基乙酸（甘氨酸）酸。已经发现，在这些过程中，在无氧气氛中，由UO ₃产生UO ₂，而在空气中，由U ₃ O ₈产生UO ₂。结果表明，在CH和AHA存在下，在微波辐射作用下，由UO ₃合成了粉状的UO ₂。所得粉末的物理性质（出铁密度为2.6-2.7 g / cm ³，比表面积最大为3.2 m² / g，水分含量小于0.1 wt％）可以满足燃料颗粒生产中陶瓷质量粉末的要求。