用于空间动力应用的从238Pu中分离237Np的替代溶剂萃取流程图

IF 1.8 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Solvent Extraction and Ion Exchange Pub Date : 2021-06-23 DOI:10.1080/07366299.2021.1939177

M. Sarsfield, M. Carrott, C. Maher, C. Mason, R. Sanderson, R. J. Taylor, T. Tinsley, D. Whittaker, D. Woodhead

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引用次数: 1

摘要

摘要从237Np生产238Pu，符合太空飞行所需的规格，需要从镎和一系列裂变产物中分离钚。然后，宝贵的镎被回收到靶中进行进一步的辐照。在橡树岭国家实验室（ORNL），已经开发了一种溶剂萃取工艺来分离镎和钚，该工艺使用亚硝酸钠来控制镎的氧化。这导致镎产品被钠污染，需要在回收之前将其去除。我们开发了一种分离工艺，通过减少纯化步骤的数量，从而简化工艺，从而获得钚污染水平非常低的无钠镎产品。

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An Alternative Solvent Extraction Flowsheet for Separating 237Np from 238Pu for Space Power Applications

ABSTRACT The production of 238Pu from 237Np, to the specifications required for space flight, requires the separation of plutonium from neptunium and a range of fission products. The valuable neptunium is then recycled into targets for further irradiation. At Oak Ridge National Laboratory (ORNL), a solvent extraction process has been developed to separate neptunium and plutonium that uses sodium nitrite to control the neptunium oxidation. This results in a neptunium product contaminated with sodium, which needs to be removed prior to recycling. We have developed a separation process that results in a sodium-free neptunium product with very low levels of plutonium contamination, there by reducing the number of purification steps and thus simplifying the process.

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来源期刊

Solvent Extraction and Ion Exchange 化学-化学综合

CiteScore

4.40

自引率

5.00%

发文量

审稿时长

8.4 months

期刊介绍： Solvent Extraction and Ion Exchange is an international journal that publishes original research papers, reviews, and notes that address all aspects of solvent extraction, ion exchange, and closely related methods involving, for example, liquid membranes, extraction chromatography, supercritical fluids, ionic liquids, microfluidics, and adsorption. We welcome submissions that look at: The underlying principles in solvent extraction and ion exchange; Solvent extraction and ion exchange process development; New materials or reagents, their syntheses and properties; Computational methods of molecular design and simulation; Advances in equipment, fluid dynamics, and engineering; Interfacial phenomena, kinetics, and coalescence; Spectroscopic and diffraction analysis of structure and dynamics; Host-guest chemistry, ion receptors, and molecular recognition.