- Ruthenium nanoparticles supported on mesoporous MCM-41 as an efficient and reusable catalyst for selective oxidation of arenes under ultrasound irradiation
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Mesoporous MCM-41 was used as a support for the uniform dispersion of ruthenium nanoparticles having an average particle size of ～5 nm. The obtained nanocomposite, MCM-41-Ru, was characterized using inductively coupled plasma, transmission electron microscopy, energy dispersive X-ray analysis, X-ray diffraction, and BET surface area measurements. The material was employed as an efficient and recyclable catalyst in the ultrasound-assisted oxidation of arenes. It was observed that ultrasound irradiation in combination with KBrO3 as the oxidant, in the presence of MCM-41-Ru nanoparticles, accelerates the oxidation reaction to afford the desired products in good yields. The recovered catalyst retained activity for successive runs, with a continuous change in the nature of its active sites.
- Khorshidi, Alireza
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p. 153 - 158
(2016/01/12)
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- The reaction of dimethyldioxirane with chrysene: Formation of a trioxide
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Oxidation of chrysene with dimethyldioxirane gives a number of products including the interesting trioxide, chrysene-5,6:4b, 10b:11,12-trioxide, 3. The x-ray crystallographic structure of 3 indicates that it is a non-planar system.
- Murray, Robert W.,Singh, Megh,Rath, Nigam
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p. 8671 - 8674
(2007/10/03)
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