High-valent iron–oxo species are frequently invoked as the key intermediates in the catalytic oxidation of organic substrates by heme and nonheme iron mono-oxygenases. In the case of heme-containing enzymes such as cytochromes P450, oxoiron(iv) porphyrin p-cation radicals have been proposed as active oxidants that effect a number of oxidation reactions, which include alkane hydroxylation, olefi...

Electro-oxidation, also called electrochemical advanced oxidation, uses electricity to generate hydroxyl radicals to perform oxidation in wastewater treatment. A new commercially available electro-oxidation process—Zimpro® Electro-oxidation (ZEO)—is especially effective for treating the highly problematic spent caustic streams produced by sweetening operations in petroleum refineries and ethyle...

The Huoshaoyun zinc–lead deposit, a giant non-sulfide deposit in Xinjiang, is one of the most significant discoveries China and globally recent years. dominated by non-sulfides, with minor occurrences sulfides such as sphalerite, galena, pyrite. minerals include smithsonite, cerussite, anglesite, Fe-oxide. This study focuses on mineralogical characteristics sulfide ores, well trace element Mine...

nabro3 combined with nh4cl is found to be an efficient reagent for the transformation of sulfides into sulfoxides in aqueous and under mild conditions.

Some time ago we reported the oxidation of 2,3-unsaturated hexopyranosides and 2-Cmethylene glycosides with hydrogen peroxide in the presence of molybdenum trioxide catalyst to give the corresponding anomeric hydroperoxides 1-5. Relatively stable hydroperoxides 1-5 were used for enantioselective oxidation of prochiral alcohols and sulfides in the presence of Ti(OiPr)4 with stereoselectivities v...

Heterogenized metalloporphyrin catalysts for oxidation reactions are extensively explored to improve chemical production. In this work, manganese meso-tetraarylporphyrins were immobilized on hydrated mesoporous titanium dioxide (SBET = 705 m2 g−1) through carboxylate or phosphonate anchoring groups separated from the macrocycle by 2-arylimidazole linker fused across one of pyrrolic rings macroc...

Sulfides and volatile organic sulfur compounds (VOSc) in water are not only malodorous but also toxic to humans and aquatic organisms. They cause serious deterioration in the ecological environment and pollute drinking water sources. In the present study, a source water reservoir--Zhoucun Reservoir in East China--was selected as the study site. Through a combination of field monitoring and in s...