稀土胆酸络合物在凝胶中的周期沉淀现象  

Phenomena of Periodic Precipitation in Rare Earth CholateGel Systems

作　　者：谢大 王立波[1] 吴瑾光[1] 徐光宪[1] 

机构地区：[1]北京大学稀土材料化学及应用国家重点实验室

出　　处：《中国稀土学报》1998年第2期101-104,共4页Journal of the Chinese Society of Rare Earths

基　　金：国家自然科学基金;国家教委博士点资助

摘　　要：在稀土胆酸凝胶扩散体系中观察到了周期沉淀现象，并用红外光谱（ＦＴＩＲ）和扩展Ｘ射线原子精细结构光谱（ＥＸＡＦＳ）对图形沉淀进行了表征。结果表明：稀土离子与胆酸反应容易产生周期沉淀，沉淀的成分与相应的络合物相近。The phenomena of periodic precipitation occurred in gel medium were observed in rare earth cholate systems. The complexes of the pattern are characterized by FTIR and EXAFS spectroscopy methods. The experimental results indicate that rare earth ions are tend to produce periodic precipitation and the precipitation of the pattern was just the corresponding rare earth cholate complexes.

关 键 词：稀土 胆酸 琼脂 周期沉淀 配合物 沉淀 

分 类 号：O614.33[理学—无机化学]