کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
66446 | 48432 | 2010 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Styrene–hydroxyethyl methacrylate copolymer microsphere immobilized porphyrinatomanganese(III) as a mild, reusable and highly efficient catalyst for epoxidation of cyclohexene with molecular oxygen Styrene–hydroxyethyl methacrylate copolymer microsphere immobilized porphyrinatomanganese(III) as a mild, reusable and highly efficient catalyst for epoxidation of cyclohexene with molecular oxygen](/preview/png/66446.png)
On the basis of synthesis of styrene–hydroxyethyl methacrylate copolymer microspheres with a functionalized hydroxyl, we have prepared a new type of copolymer microspheres immobilized porphyrinatomanganese(III), P(St-co-HEMA)MnP, by a condensation reaction between a hydroxyl in copolymer microspheres surface and a carboxyl in porphyrin ring. The obtained copolymer catalyst (P(St-co-HMEA)MnP) was characterized by SEM, UV–vis, IR, ICP and TG–DTG. The SEM image shows that the morphology of the copolymer catalyst is spheriform with ca. 4 μm diameter. The catalytic activity of P(St-co-HMEA)MnP to epoxidize cyclohexene in the presence of molecular oxygen and isobutylaldehyde has been studied. The catalytic efficiency of P(St-co-HMEA)MnP is comparable to that of non-supported MnCMPTTP. It is a mild, reusable and highly efficient heterogeneous catalyst for the epoxidation of cyclohexene.
A new type of copolymer microspheres immobilized porphyrinatomanganese(III) was prepared and used to catalyze cyclohexene epoxidation in the presence of molecular oxygen and isobutylaldehyde.Figure optionsDownload high-quality image (43 K)Download as PowerPoint slide
Journal: Journal of Molecular Catalysis A: Chemical - Volume 331, Issues 1–2, 1 October 2010, Pages 29–34