含羧酸稀土配合物的合成与表征  

Synthesis and characterization of carboxylic acid rare earth coordination compound

作　　者：谢刚[1] 马浩翔[1] 王百合[1] 闫淑慧[1] 

机构地区：[1]黑龙江大学化学化工与材料学院功能高分子重点实验室,哈尔滨150080

出　　处：《黑龙江大学工程学报》2012年第2期47-52,共6页Journal of Engineering of Heilongjiang University

基　　金：黑龙江省教育厅科研项目(12511378)

摘　　要：采用不同pH条件下,利用邻苯二甲酸氢钾做缓冲溶液,将邻苯二甲酸氢钾和氯化铈稀土溶液在一定条件下进行合成,得到一系列以邻苯二甲酸氢钾为配体的铈-邻苯二甲酸配合物。并通过X射线衍射、红外光谱、紫外光谱、热失重等分析测试方法,对所合成的羧酸稀土助剂(RECar3)的紫外光吸收效果进行表征。结果表明:配合物中的邻苯二甲酸根与Ce(Ⅲ)离子发生了配位,pH为6～7存在着配合物配位方式的转折点,且pH为6时配合物的紫外吸收最强,具有较好的紫外光吸收效果,可用作降解高分子材料助剂使用。A series of coordination compounds of Cerium phthalate, coordinated by potassium hydrogen phthalate, were synthesized from potassium hydrogen phthalate and Cerium chloride rare earth solution under different pH value conditions, and potassium hydrogen phthalate acted as buffer solution. The effect of ultraviolet absorption of the newly-synthesized carboxyiic acid rare earth additives was characterized via XRD, IR spectroscopy, UV-VIS spectroscopy and TGA. The result showed that the phthalate was coordi- nated to Ce （III） ion, the turning point of the coordination mode existed in between pH=6-7, and the compound had the strongest ultraviolet absorption under pH=6, which can be used as additive to degrade macromolecular materials due to its ideal effect of ultraviolet absorption.

关 键 词：羧酸稀土 高分子材料助剂 合成 表征 

分 类 号：O631.3[理学—高分子化学]