【摘要】 用太阳光引发Ce³⁺光氧化和碘酸盐沉淀Ce⁴⁺在镧系元素混合物的酸性水溶液中分离出了铈。Ce/Nd分离系数达到13,沉淀率50％。测定了CeCl₃-KIO₃-HCl水溶液的紫外—可见吸收光谱,并发现了ICl-2^-离子的特征吸收,研究了起始光化学反应的机理。更多还原

【Abstract】 Cerium has been separated from lanthanide mixtures in acidic solution.Separation is accomplished by photooxidation of Ce3+,followed by pricipitating Ce4+ with iodate.The separation factor of Ce/Nd obtained 13,the product yield obtained 50%.The uv-vis spectrum of CeCl3-KIO3-HGl aquous solution has been investigated and ICI-2 ion has been discovered in this system.The mechanism of primary photochemical reaction has been studied.更多还原