丁二酰胺基功能性離子液的合成表征以及對鈾酰、釷、銪的萃取行為研究
[Abstract]:With the rapid economic development of various countries in the world, it has also brought many serious social problems such as environment, energy and so on. In order to solve the problem of the demand for power energy, the contemporary nuclear industry is developing rapidly. The treatment process of raw uranium and the uranium treatment process in the high-level radioactive waste liquid in the late stage of nuclear power have caused extensive attention. Only by solving this kind of problems can nuclear energy be more widely used and can it be used for a longer time in the future. In this paper, a new type of functional ionic liquid is used for extraction, as a new method of extraction, it has become the focus of attention. Functional ionic liquid is used in extraction research, which mainly plays the role of low volatility and low viscosity of ionic liquid. It has the advantages of no toxicity and no pollution, can be reused, and has special extraction functional groups to realize extraction separation. The functional ionic liquid extractant of 3-bis (N-R carbamoyl) -1-R' imidazole (NTf2) was synthesized and characterized. The synthetic raw materials of several extractants involved in this paper are simple and easy to obtain, and the synthetic methods can be used in a large number of synthesis, and have a good prospect of industrial use. In this paper, seven kinds of succinamide functional ionic liquids with different substituents have been synthesized, and the high resolution mass spectrometry, infrared spectrum, nuclear magnetic resonance hydrogen spectrum, which are often used in the organic synthesis process, have been used. The structure of the product was confirmed by carbon spectrum. At the same time, the extraction conditions of different functional ionic liquids in conventional organic solvents, ionic liquids as diluents, no diluents used, and different acidity were investigated. Extraction under different concentration and different oscillation time, stripping and reuse. The experimental results show that seven new functional ionic liquids have been synthesized. The 3- bis (N- N- Ding Ji carbamate)-1 Ding Ji imidazole bis-trifluoromethane sulfonyl functional ionic liquid synthesized from succinamide ionic liquid showed the best effect in the study of the extraction behavior of uranyl, and the extraction performance of thorium and europium was very poor. It is expected to be applied to the separation of lanthanides, whose extraction effect is better than that of functional ionic liquid without diluent, and the tendency of extraction of uranyl at different concentrations of hydrogen ions is that the higher the concentration of hydrogen ion, It is easier to extract uranyl ions, and if the oscillation time is prolonged, the extraction effect of functional ionic liquids will be enhanced, and the extraction equilibrium will be reached at 70 minutes. On the basis of functional ionic liquid anion exchange, it still has good extraction performance, and functional ionic liquid can be reused many times.
【學(xué)位授予單位】:蘭州大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:O658.2;O645.1
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