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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Functionalized mesoporous silica supported copper(ii) and nickel(ii) catalysts for liquid phase oxidation of olefins
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Functionalized mesoporous silica supported copper(ii) and nickel(ii) catalysts for liquid phase oxidation of olefins

机译：功能化介孔二氧化硅负载的铜（ii）和镍（ii）催化剂，用于烯烃的液相氧化

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摘要

Highly ordered 2D-hexagonal mesoporous silica has been functionalized with 3-aminopropyltriethoxysilane (3-APTES). This is followed by its condensation with a dialdehyde, 4-methyl-2,6-diformylphenol to produce an immobilized Schiff-base ligand (I). This material is separately treated with methanolic solution of copper(ii) chloride and nickel(ii) chloride to obtain copper and nickel anchored mesoporous materials, designated as Cu-AMM and Ni-AMM, respectively. The materials have been characterized by Fourier transform infrared (FT-IR) and UV-vis diffuse reflectance (DRS) spectroscopy, powder X-ray diffraction (XRD), transmission electron microscopy (TEM), N_2 adsorption-desorption studies and ~(13)C CP MAS NMR spectroscopy. The metal-grafted mesoporous materials have been used as catalysts for the efficient and selective epoxidation of alkenes, viz. cyclohexene, trans-stilbene, styrene, α-methyl styrene, cyclooctene and norbornene to their corresponding epoxides in the presence of tert-butyl hydroperoxide (TBHP) as the oxidant under mild liquid phase conditions. This journal is
机译：已使用3-氨丙基三乙氧基硅烷（3-APTES）官能化了高度有序的2D-六方介孔二氧化硅。随后将其与二醛，4-甲基-2,6-二甲酰基苯酚缩合以生成固定的席夫碱配体（I）。将该材料分别用氯化铜（ii）和氯化镍（ii）的甲醇溶液处理，以获得铜和镍锚定的中孔材料，分别称为Cu-AMM和Ni-AMM。通过傅立叶变换红外（FT-IR）和紫外可见漫反射（DRS）光谱，粉末X射线衍射（XRD），透射电子显微镜（TEM），N_2吸附-脱附研究和〜（13 C CP MAS NMR光谱。金属接枝的中孔材料已经用作烯烃的有效和选择性环氧化的催化剂，即。环己烯，反式二苯乙烯，苯乙烯，α-甲基苯乙烯，环辛烯和降冰片烯在温和的液相条件下，在过氧化氢叔丁基酯（TBHP）存在下，形成相应的环氧化物。这本日记是

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