稀土光化学Tb3在KlO4-KOH体系中的光氧化

摘要/Abstract

摘要： 本文报道在KIO₄-KOH碱性溶液中Tb³⁺生成可溶性络合物的光氧化.研究了碱度,络合剂浓度,Tb³⁺浓度,辐照面积,光强和辐照时间等因素对了b⁴⁺生成的影响.KOH浓度应大于0.3M,KIO₄的浓度应比Tb³⁺的初始浓度大两个数量级.生成的Tb⁴⁺可溶性络离子呈棕红色.最大吸收峰420nm附近,比较稳定.

关键词: 铽离子, 光氧化, 稀土光化学

Abstract: The photooxidation of Tb³⁺ in KIO₄-KOH solution is reported in this paper.The soluble complex formed in this system was irradiated by high pressure mercury lamp (366nm). The influences of the concentration of KIO₄,KOH and Tb³⁺,the time and area of exposure and the light intensity on the amount of Tb⁴⁺ formed were investigated. The preferable concentration of KOH is >0.3M,and that of KIO₄ is two orders higher than the initial concentration of Tb³⁺. The soluble complex ion of Tb⁴⁺ formed is red-brown and fairly stable. The maximum of its absorption band is at about 420nm.

Key words: Terbium ion, Photooxidation, Photochemistry of rare-earth elements

蒋广峰, 苏锵. 稀土光化学Tb³在KlO₄-KOH体系中的光氧化[J]. 应用化学, 1988, 0(4): 29-32.

Jiang Guangfeng, Su Qiang. THE PHOTOCHEMISTRY OF RARE EARTHS PHOTOOXIDATION OF Tb³⁺ IN KIO₄-KOH MEDIUM[J]. Chinese Journal of Applied Chemistry, 1988, 0(4): 29-32.

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稀土光化学Tb³在KlO₄-KOH体系中的光氧化

THE PHOTOCHEMISTRY OF RARE EARTHS PHOTOOXIDATION OF Tb³⁺ IN KIO₄-KOH MEDIUM

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