2-(N,N-二羧甲基)-氨甲基-4-氯酚铜(Ⅱ)的合成、结构与催化降解聚丙烯酰胺性能研究

Synthesis,structure and catalysis study on degradation reaction of PAM of 2-(N,N-biscarboxymethyl)aminomethyl-4-chloro-phenol Cu(Ⅱ)

合成了2-(N,N-二羧甲基)氨甲基-4-氯酚,进而在水溶液中合成了其铜(Ⅱ)配合物,通过X-射线单晶衍射法测定了晶体结构。配合物中心Cu(Ⅱ)为五配位四方锥结构,在该配合物的晶体结构中存在两种构象异构体,相互间隔通过分子间氢键连接,延伸为一维链状结构。催化性能研究表明该配合物对H2O2的氧化降解聚丙烯酰胺有一定的催化作用,可以使分子量由6.1×106降低至1.66×105。

A complex,2-（N,N-biscarboxymethyl）aminomethyl-4-chloro-phenol Cu（Ⅱ）,was synthesized using di-sodium 2-（N,N-biscarboxymethyl）aminomethyl-4-chloro-phenol and CuCl2 in water.The crystal structure was characterized by single crystal X-ray diffraction analysis.The result indicates that the copper ion is penta-coordinated.There are two kinds of molecules with different conformation in the crystal,which are fixed by intermolecular hydrogen bonding of carboxyl and phenolic hydroxyl group and form the 1-D supramolecular structure.The result of catalysis study showed that the complex could catalyze the oxidative degradation of PAM by H2O2,and the molar weight can be reduced to 1.66×105 from 6.1×106.