Nanomagnet-Supported Partially Brominated Manganese-Porphyrin as a Promising Catalyst for the Selective Heterogeneous Oxidation of Hydrocarbons and Sulfides in Water
作者： Abdolreza Rezaeifard , Maasoumeh Jafarpour , Parisa Farshid , Atena Naeimi
关键词: Catalyst support 、 Thermogravimetric analysis 、 Chemistry 、 Inorganic chemistry 、 Heterogeneous catalysis 、 Magnetic nanoparticles 、 Catalysis 、 Sulfoxide 、 Peroxomonosulfate 、 Aqueous solution
摘要: A novel, magnetically recoverable porphyrin catalyst has been prepared by the coordinative anchoring of [Mn(Br2TPP)OAc] complex on silica-coated magnetic nanoparticles (Fe3O4@SiO2, SMNP) through an amine functionality. The heterogeneous was characterized powder X-ray diffraction, transmision electron microscopy, scanning and FTIR spectroscopy. loading support determined thermogravimetric (TG) analysis inductively coupled plasma atomic emission were estimated to have a diameter less than 10 nm. TG curve demonstrated that nanocatalyst thermally stable up almost 350 °C, exhibiting high thermostability. epoxidation olefins oxidation saturated hydrocarbons corresponding ketones as well sulfides sulfones in aqueous solution tetra-n-butylammonium peroxomonosulfate (n-Bu4NHSO5, TBAOX) efficiently enhanced with excellent selectivity under influence separable catalyst. Sulfoxides could also be selectively produced mixture water ethanol, which makes title methodology good alternative for both sulfoxide sulfone production. separation recycling byproduct oxidant simple, effective, economic this clean method. leaching experiments after seven successive cycles showed very strongly anchored SMNP support.
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