聚(苯乙烯-丙烯酸)镨配合物中单体链段分布与配合物催化活性的关系  

RELATIONSHIP BETWEEN THE SEQUENCE DISTRIBUTION OF MONOMERIC UNITS IN POLY(STYRENE-ACRYLIC ACID)PRASEODYMIUM COMPLEX AND ITS CATALYTIC ACTIVITY

作　　者：尹作瑞 于广谦[1] 李玉良[1] 曲雅焕[1] 

机构地区：[1]中国科学院长春应用化学研究所,长春130022

出　　处：《应用化学》1993年第2期5-8,共4页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金

摘　　要：合成并表征了聚(苯乙烯(S)-丙烯酸(A))镨配合物(SAAC·Pr)。红外光谱表明它具有双配位结构:Pr?C—R。计算了共聚物中单体单元的序列分布。苯乙烯和丙烯酸单元长序列分布随其在共聚物中含量的增加而增加。当丙烯酸长序列分布高时,配合物的催化活性低。苯乙烯和丙烯酸的平均链长分别为ns=3,nA=1时,配合物的催化活性最高。Poly(styrene-acrylic acid)supported praseodymium complex (SAAC·Pr) has been synthesized and characterized. The infrared spectra of SAAC · Pr indicated the presence of bidentate carboxylate structure:The sequence distribution of the monomeric units in the complex has been calculated. The long sequences of styrene and acrylic acid increase with the increase of the monomer content in the copolymet. The longer the sequence of acrylic acid,the lower the catalytic activity of SAAC · Pr. The complex showed the highest activity when ratio of the number average sequence of styrene to that of acrylic acid was 3 : 1.

关 键 词：苯乙烯 丙烯酸 共聚物 镨络合物 

分 类 号：O614.334[理学—无机化学]