氨基化Cu_3(BTC)_2的制备、表征及其催化性能研究  

Preparation and characterization of amino-functionalized Cu_3(BTC)_2 and its catalytic performance in knoevenagel condensation

作　　者：田苗苗[1,2] 张艳梅 李晓芳[1,2] 张静[1] 储刚[1] 范圣第 王剑峰 

机构地区：[1]辽宁石油化工大学化学与材料科学学院,抚顺113001 [2]大连民族大学生命科学学院,大连116605

出　　处：《化工新型材料》2015年第11期39-42,共4页New Chemical Materials

基　　金：国家自然科学基金项目(21203017);国家重点实验室开放基金(N-11-03);中央高校基本研究业务费专项资金资助项目(DC201502020304);辽宁省高等学校优秀人才支持计划

摘　　要：采用3-氨丙基三乙氧基硅烷为修饰剂制备了氨基化Cu3(BTC)2,用X射线衍射(XRD)、傅里叶变换红外光谱(FT-IR)、扫描电镜(SEM)和氮气吸附等对材料的结构和形貌进行了表征,并考察了材料在苯甲醛和氰基乙酸乙酯的Knoevenagel缩合反应中的催化反应性能。研究结果表明,氨基化的Cu3(BTC)2材料保持原始Cu3(BTC)2材料的结构和形貌。而且,氨基和金属不饱和位点(Cu2+)具有协同催化作用,在Knoevenagel缩合反应中比Cu3(BTC)2表现出更高的反应活性和选择性。反应1h产率为90%,循环使用3次,活性没有明显降低。本研究为金属有机骨架材料的功能化和应用提供了新思路。Amino-functionalized Cu3（BTC）2 was prepared by surface grafting using 3-aminopropyl triethoxysilane as the modifier.The resulting material was characterized by XRD,FT-IR,SEM and nitrogen adsorption techniques,and further investigated in the knoevenagel condensation of benzaldehyde and ethylcynoacetate.Results indicated that the modification did not change its porous structure as well as the morphology.Specially,the amino-functionalized Cu3（BTC）2exhibited better activity and selectivity due to the cooperative action between the amino group and the Lewis acid sites（Cu2＋）for knoevenagel condensation.90% yield was obtained in 1hour and the catalyst could be recycled at least three times without obvious loss of its activity and selectivity.

关 键 词：金属有机骨架材料 Cu3(BTC)2 缩合反应 稳定性 

分 类 号：O621.3[理学—有机化学]