Wu Yun, Wang Wei, Liu Lingli, Zhu Sane, Wang Xiaochen, Hu Enzhu, Hu Kunhong
Department of chemistry and materials engineering Hefei University Hefei 230601 P R China.
ChemistryOpen. 2019 Mar 28;8(3):333-338. doi: 10.1002/open.201900032. eCollection 2019 Mar.
The use of metal complex immobilized/decorated porous materials as catalysts has found various applications. As such, finding a new and mild method for synthesis of metal complex immobilized over porous material is of great interest. Immobilized porous materials for styrene oxidation were reported in this work. Immobilized porous material of Cu-Schiff base complex @MIL-101 were described, in which immobilized Cu-Schiff base complex within super cage of a metal-organic framework (MOF)-based porous material, chromium (III) terephthalate MIL-101. They were systematically characterized by using elemental analysis, powder X-ray diffraction, fourier transform infrared spectroscopy, N absorption-desorption, and so on, also used as catalyst for the selective oxidation of styrene to benzaldehyde. Comparatively, the immobilized heterogeneous catalyst of Cu-Schiff base complex@MIL-101 acted as an efficient heterostructure catalyst in the oxidation of styrene to benzaldehyde up to six cycles, and showed superior activity for styrene oxidation over MIL-101.
金属配合物固定化/修饰的多孔材料作为催化剂已得到广泛应用。因此，寻找一种合成固定在多孔材料上的金属配合物的新型温和方法具有重要意义。本文报道了用于苯乙烯氧化的固定化多孔材料。描述了Cu-席夫碱配合物@MIL-101的固定化多孔材料，其中Cu-席夫碱配合物固定在基于金属有机框架（MOF）的多孔材料、对苯二甲酸铬（III）MIL-101的超笼内。通过元素分析、粉末X射线衍射、傅里叶变换红外光谱、N吸附-脱附等方法对其进行了系统表征，并用作将苯乙烯选择性氧化为苯甲醛的催化剂。相比之下，Cu-席夫碱配合物@MIL-101的固定化多相催化剂在将苯乙烯氧化为苯甲醛的反应中可作为高效的异质结构催化剂循环使用多达六次，并且在苯乙烯氧化反应中表现出优于MIL-101的活性。
