Photochemistry of lanthanide III: Photoreduction separation of europium

Abstract

Europium(III) chloride was effectively photoreduced and precipitated as Eu(II) sulfate from aqueous solution by making use of HCO2H-HCO2Na (1:1) as radical scavenger and under radiation of a low pressure mercury lamp (20 W). The formation of reduction product EuSO4 was confirmed through chem. anal., measurement magnetic susceptibility, and x-ray diffraction. The separation factors between europium and other rate earth elements were determine The factors affecting the photoredn. process, such as the concentration of the scavenger and the precipitating agent, and the acidity of the solution, were carefully studied.

Key words: REACTION MECHANISM, LANTHANON, PHOTOCHEMISTRY, SODIUM SULFATE, PRECIPITATION, EUROPIUM, PHOTO REDUCTION, ION CONCENTRATION, SODIUM BICARBONATE, P507

CLC Number:

O644

Cite this article

LI RUIXIANG;LI XIAOJING;YANG RUDONG. Photochemistry of lanthanide III: Photoreduction separation of europium[J]. Acta Chimica Sinica, 1989, 47(9): 861-866.

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镧系元素光化学 III: 铕的光还原分离