聚乙烯醇磷酸酯缩丁醛的制备及对稀土离子的吸附性能研究  

Preparation of Cross-Linked Polyvinyl Alcohol Phosphate Ester and Its Property on Adsorption of Rare Earth Metal Ions

作　　者：王艳[1] 张东[2] 谭昭怡[1] 罗顺忠[2] 帅震清[1] 余安国[1] 冯易君[1] 

机构地区：[1]四川大学化学学院,四川成都610064 [2]中国工程物理研究院,四川绵阳621900

出　　处：《中国稀土学报》2003年第z1期25-28,共4页Journal of the Chinese Society of Rare Earths

基　　金：国家自然科学基金(10175047);中国工程物理研究院科研项目

摘　　要：报道了聚乙烯醇磷酸酯缩丁醛(P PVB)的制备方法,考察了它对稀土离子Y3+,La3+,Eu3+的吸附性能。探讨了体系pH值,温度,吸附时间等因素对吸附性能的影响。发现P PVB对稀土离子的吸附性能强,25℃时Y3+,La3+,Eu3+的静态饱和吸附容量分别为88.52,134 88,165.30mg·g-1,另外它还具有重复使用性,有一定的实用价值。Cross-linked polyvinyl alcohol phosphate ester(P-PVB) was prepared. Phosphoric acid was first utilized for the esterification of PVA, the product subsequently was cross-linked with butyraldehyde. Adsorption capacity of Y^(3+), La^(3+), and Eu^(3+) ions on P-PVB was investigated. The effect of pH value, temperature and time on adsorption capacity was also studied. It′s found that adsorption capacity of rare earth metal ions on P-PVB is good, the statically saturated adsorbing capacity of Y^(3+), La^(3+), and Eu^(3+) ions at 25 ℃ reaches 88.52, 134.88, 165.30 mg·g^(-1), and it can be reused for six times with high adsorption capacity.

关 键 词：聚乙烯醇 磷酸 丁醛 吸附 稀土 

分 类 号：O614.33[理学—无机化学]