Preparation of manganese (III) acetylacetonate nanoparticles via an environmentally benign route

Abstract

With the hope of overcoming the generation of hazardous materials to human health and environment, serious and great endeavor have been made in catalyst fabrication using green chemistry technology. In this paper, the manganese (III) acetylacetonate nanoparticles with diameters of about 146 nm were prepared by a simple and environmentally benign route based on hydrolysis of KMnO₄ followed by reaction with acetylacetone in rapid stirring rate or ultrasonication. The as-prepared samples were characterized by X-ray diffraction, energy dispersive X-ray fluorescence (EDIX), Fourier transfer infrared spectroscopy and scanning electron microscope. Various parameters were investigated, and the pure and stable crystals of manganese (III) acetylacetonate could be obtained in 98% conversion at a molar ratio 7∶1 of acetylacetone to KMnO₄ and 75°C after 60 min. We further proposed a mathematical model, and the predicted results from model were in good agreement with experimental results.

Key words： green chemistry; manganese (III) acetylacetonate; reaction conversion; Mathematical model

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