共价固载 Cu(II)席夫碱配合物到有机修饰的 KIT-6 及其选择性氧化苯乙烯# 孙剑,管景奇** 5 10 15 20 25 30 35 40 (吉林大学化学学院,长春,130021) 摘要:本文合成的多相催化剂是通过共价固载 Cu(II)席夫碱配合物到氨基功能化的 KIT-6。 所得到的杂化材料随后通过 XRD,红外光谱,扫描和氮气吸附脱附等一系列表征手段。表征 结果说明在多次的嫁接过程中,KIT-6 的孔道结构并未受到破坏。制备的催化剂被用于苯乙 烯环氧化的反应,当我们使用叔丁基过氧化氢为氧化剂时表现出良好的催化效果,可重复使 用 3 次而未出现严重的活性损失。 关键词:物理化学;苯乙烯;环氧化;KIT-6 中图分类号:O643 Covalent attaching of Cu(II) plex onto organ-modified KIT-6 for selective oxidation of styrene SUN Jian, GUAN Jingqi (College of Chemistry, Jilin University, Changchun, 130021) Abstract: Novel heterogeneous catalyst was prepared by covalently anchoring of Cu(II) Schiff complex onto amine functionalized KIT-6. Then the hybrid material was characterized by X-ray diffraction (XRD), infrared (IR) spectra, scanning electron microscopy (SEM) and Nitrogen adsorption-desorption, etc. The characterization results indicated that the structural integrity of the mesoporous hosts after the stepwise grafting procedure. The catalyst displayed excellent catalytic performance in epoxidation of styrene using tert-BuooH as oxidant. The recycling experiment results suggested that the catalyst could be reused three times with insignificant loss of catalytic activity. Key words: Physical chemistry; Styrene; Epoxidation; KIT-6 0 引言 烯烃环氧化反应长期以来受到人们的广泛关注,这是因为环氧化物作为重要的中间体在 精细化工和合成化学等领域有着广泛的应用空间[1-2]。近些年来,人们致力于制备廉价、高 效、可多次重复使用的多相催化剂来取代传统的均相催化剂。像过渡金属