In this study meso-tetrakis(4-carboxyphenyl)porphyrinatomanganese(III) acetate was immobilized onto the surface of amine functionalized Fe₃O₄ magnetic nanoparticles through covalent linkage. The new magnetic nanocatalyst [Fe₃O₄@SiO₂@NH₂@MnTCPP(OAc)] was characterized using Fourier infrared spectroscopy (FT-IR), X-ray powder diffraction (XRD), electronic and atomic absorption spectroscopy, vibrating sample magnetometry (VSM), thermogravimetric analysis (TGA) and scanning electron microscopy (SEM). The prepared catalyst was used for the oxidation of alkenes with molecular oxygen as standard green oxidant and excellent results were achieved. The new heterogenized [Fe₃O₄@SiO₂@NH₂@MnTCPP(OAc)] catalyst could be readily reused at least five times without significant decrease in the activity, which displays potential for practical applications.

在这项研究中，内消旋-四（4-羧基苯基）卟啉锰（III）乙酸盐通过共价键固定在胺官能化的Fe ₃ O ₄磁性纳米颗粒的表面上。新型磁性纳米催化剂[Fe ₃ O ₄ @SiO ₂ @NH ₂@MnTCPP（OAc）]的特征在于使用傅立叶红外光谱（FT-IR），X射线粉末衍射（XRD），电子和原子吸收光谱，振动样品磁强（VSM），热重分析（TGA）和扫描电子显微镜（ SEM）。制备的催化剂用于以分子氧作为标准绿色氧化剂氧化烯烃，并获得了优异的结果。新型的异质化[Fe ₃ O ₄ @SiO ₂ @NH ₂ @MnTCPP（OAc）]催化剂可以容易地重复使用至少五次，而不会显着降低活性，这在实际应用中显示出潜力。