99Mo因为衰变产生99mTc在核医学领域占有非常重要的地位。当前主要通235U在反应堆裂变大规模生产99Mo。然而235U裂变产物中含100余种核素，如何从中快速高效提取99Mo成为影响99Mo生产的关键环节。鉴于离子液体独特的性质和在金属离子萃取分离中的显著优势，发展基于离子液体萃取99Mo的新方法具有重要的科学意义和实际应用价值。本项目以裂变99Mo的高效提取为目标，通过理论与实验相结合，设计构建适用于99Mo萃取分离的功能性离子液体体系。研究所构建离子液体体系对99Mo的选择性萃取分离行为；利用同步辐射技术并结合其它谱学手段表征离子液体中萃合物的微观结构，分析相应的萃取机理；研究离子液体中金属离子的反萃及离子液体的循环利用，评价离子液体萃取体系的辐射稳定性。本项目的实施将为我国裂变99Mo提取工艺革新提供坚实的技术储备及理论依据。

Due to its daughter nuclide 99mTc, 99Mo occupies a very important position in the field of nuclear medicine. Nowadays, 99Mo can be produced at a large scale through 235U fission in nuclear reactor. However, the fission products of 235U involve more than 100 nuclides. How to extract 99Mo quickly and efficiently from the fission products becomes the key link affecting 99Mo production. In view of the unique properties of ionic liquids and their significant advantages in metal ion extraction, it is of great scientific and practical significance to develop new methods for extraction of 99Mo based on ionic liquid systems. This project aims to efficiently separate 99Mo from the fission products of 235U by functional ionic liquids. Specially, through the combination of theory and experiment, the applicable 99Mo extraction systems based on functional ionic liquids are designed and constructed. Selective extraction and separation of 99Mo from other elements are investigated by using the constructed ionic liquid systems; Synchrotron radiation techniques combined with other advanced spectroscopy methods are applied to characterize the microstructure of metal complexes in ionic liquids, with implications of the corresponding extraction mechanism; The stripping behavior of metal ions from ionic liquids and the recycling of ionic liquids are also studied, and the radiation stability of the systems is evaluated. It is expected that the implementation of this project will provide solid technical reserves and theoretical basis for the innovation of fission 99Mo extraction process in our country.