Preparation of americium metals by electrolysis of the aqueous solutions

铀已成功地通过热分解电化学制备汞齐的水溶液。铀的汞齐化速率近似为一级反应，汞齐在真空中加热至1250℃。用气相和金属杂质分析法测定了金属铀的纯度，其纯度约为4N.该金属制备方法已成功地应用于镎、镧、铈、钛等金属的制备，并已应用于金属镅的制备.在JEARI的WASTEF设施中进行制备。将20mg氧化物溶解在盐酸溶液中。用汞池电极进行了水溶液中镅的汞齐化。然后将合成的汞齐送入炉中进行热分解，并对热分解产物进行X射线衍射分析。并对产物进行了碳、氧、氮分析。结果表明，在热分解产物中不存在金属镅。通过X射线衍射和元素分析确定产物为氧化物。

Uranium has been produced successfully by the thermal decomposition of electrochemically prepared amalgams from the aqueous solutions. The amalgamation rate of uranium was approximately regarded as a first-order chemical reaction and the amalgam was heated at 1250℃ in vacuum. The purity of uranium metals were estimated to be about 4N by the gaseous and metallic impurity analysis.The procedure for metal preparation had been successfully applied to metal preparations of neptunium, lanthanum, cerium and titanium.The procedure has been applied to preparation of americium metal. The preparation was carried out in the facility of WASTEF in JEARI. The oxide of 20mg was dissolved in the hydrochloric acid solution. The amalgamation of americium in aqueous solution was carried out using the mercury pool electrode. And then, the synthesized americium amalgam was transferred into the furnace for thermal decomposition of the amalgam.The products of thermal decomposition were analyzed by the X-ray diffraction. And also the carbon, oxygen and nitrogen analysis of the products were carried out. As the results, americium metal was not conformed in the thermal decomposition products. The product was identified to be the oxide from X-ray diffraction and elementally analysis.