水合二氧化铈的制备、表征及对硼的吸附研究  

Synthesis and Characterization of Hydrous Ceria with Its Adsorption Property for Boron

作　　者：闫春燕[1] 伊文涛[1] 马培华[1] 邓小川[1] 宋士涛[1] 祝增虎[1] 

机构地区：[1]中国科学院青海盐湖所

出　　处：《中国稀土学报》2008年第3期302-306,共5页Journal of the Chinese Society of Rare Earths

基　　金：国家“十五”科技攻关滚动支持项目(2004BA602B-01)资助

摘　　要：水合金属氧化物作为一类无机离子交换剂,对特定的离子具有良好的吸附选择性。采用沉淀法合成了水合二氧化铈以用于分离含硼废水中的微量硼,并对其进行了水热处理研究,对合成的样品进行了XRD,FT-IR,TG-DTG和比表面-孔径分布等一系列表征。结果表明,所合成的水合二氧化铈对硼具有良好的吸附效果,较常用的硼特效树脂对溶液中的微量硼具有更高的吸附容量,其吸附过程符合Langmuir吸附等温模型。The hydrous ceria was synthesized by precipitation and hydrothermal treatment, and characterized by XRD, FT-IR, TG-DTG and specific surface area-pore distribution. It was found that the hydrous ceria had good adsorption for boron, and used to separate the micro-amounts of boron could be from bo-ron-containing waste water. Its adsorption capacity was higher than the common-used boron specific resins. The adsorption equilibrium or adsorption process was coincided well with Langmuir adsorption isotherm model.

关 键 词：水合二氧化铈 制备及表征 吸附 硼 吸附等温线 稀土 

分 类 号：O647.3[理学—物理化学]