寡聚酸合铈(Ⅲ)的合成及抗氧化作用的研究  

Synthesis,characterization and antioxidation activity of cerium(Ⅲ)glucose oligosaccharide acid

作　　者：张志民[1] 范云霞[2] 胡雪芳[1] 刘卫萍[1] 王士奎[1] 

机构地区：[1]农业部规划设计研究院,北京100125 [2]廊坊师范学院化学系,河北廊坊065000

出　　处：《应用化工》2011年第9期1525-1528,共4页Applied Chemical Industry

基　　金：国家863计划引导项目(2005AA001240)

摘　　要：在水-乙醇介质中,以寡聚酸钾与硝酸铈反应,合成寡聚酸合铈(Ⅲ)配合物,采用正交实验,考察了V水∶V乙醇、反应温度、反应时间对螯合反应的影响。结果表明,最优反应条件为:V水∶V乙醇=1∶3;温度50℃,时间6 h。通过红外光谱、紫外光谱和差热-热重分析测试手段对配合物进行了表征。红外光谱和紫外光谱均显示,Ce3+与寡聚酸配位,寡聚酸合铈(Ⅲ)配合物中金属配位方式为双齿配位。抗氧化作用研究表明,寡聚酸钾和寡聚酸合铈(Ⅲ)配合物均具有抗氧化活性,配合物与寡聚酸钾相比,对.OH有更高的清除活性。A novel cerium （ Ⅲ ） glucose oligosaccharide acid was synthesized by cerium nitrate and potassium glucose oligosaccharide acid in water-ethanol system firstly. Effects of V（water） ： V（ethanol） , reaction temperature,reaction time on the product was studied by orthogonal experiment. The best conditions were as follows ： V（water） ： V（ethanol） = 1 ： 3,50℃ ,6 h. The characterization of the cerium（ Ⅲ） glucose oligo- saccharide acid was confirmed by IR and UV-Vis spectrum. The infrared spectrum and ultraviolet spectrum showed that Ce3＋ and glucose oligosaccharide acids were in a coordinate system. The mode of metal coordination in cerium （ Ⅲ ） glucose oligosaccharide acid was bidentated. The results of antioxidation showed that potassium glucose oligosaccharide acid and cerium （Ⅲ ） glucose oligosaccharide acid all had the antioxidant activity. The latter had higher activity of eliminating ·OH.

关 键 词：寡聚酸钾 寡聚酸合铈 表征 抗氧化 

分 类 号：TQ225.24[化学工程—有机化工]