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光化学还原法制备四氟化铀,虽然早在上个世纪已为人们所发现,并且以它的产品纯、操作方便和工艺简单而吸引人,但由于光源不理想,四氟化铀产率低,过去一直没有得到实际应用。本文采用较为理想的300W镓灯作光源,以乙醇作还原剂,在硝酸-氢氟酸体系中,比较系统地研究了一些因素对四氟化铀产率的影响。实验方法与我们以前发表过的工作相同。实验条件是:[U(Ⅵ)]_0=0.03M,T=30±5℃,[U(Ⅵ)]_0:[C_2H_5OH]_0:[HF]_0≈1:1:10。
Photochemical reduction of uranium tetrafluoride, although it has been found in the last century, and because of its pure product, easy operation and the process is simple and attractive, but because of the light source is not ideal, low yield of uranium tetrafluoride , In the past has not been practical application. In this paper, a more ideal 300W gallium lamp as a light source, ethanol as a reductant, nitric acid - hydrofluoric acid system, a more systematic study of the impact of some factors on the yield of uranium tetrafluoride. The experimental method is the same as what we published before. The experimental conditions are: [U (VI)] _0 = 0.03M, T = 30 ± 5 ° C, [U (VI)] _0: [C_2H_5OH] _0: [HF] _0≈1: 1: 10.