Electrochemical Kinetics Study of Ultrasound-Assisted Chalcopyrite Oxidation

Investigation of Mechanism and Kinetics of Chalcopyrite Concentrate Oxidation Process

The roasting of chalcopyrite, the most exploited copper mineral, presents a very important step in the copper extraction during the traditional smelting-refining process, as well as in advanced processes in copper metalurgy 1-2 . Consequently, numerous researches have been investigated, in order to study the chalcopyrite oxidative roasting parameters, its mechanism and reactions involved 1-16 ....

Thermal Analysis and Kinetics of the Chalcopyrite-pyrite Concentrate Oxidation Process

A. Mitovski, N. Štrbac, D. Manasijević, D. Živković, Lj. Balanović, University of Belgrade, Technical Faculty in Bor, Serbia, M. Sokić, A. Daković, ITNMS, Belgrade, Serbia The paper presents the results of experimental investigation of the chalcopyrite-pyrite concentrate oxidation in the air. Characterisation of the initial sample and oxidation products was done by ICP-AES, XRD, EDXRF methods. ...

Ultrasound assisted oxidation of various alcohols to corresponding aldehydes by using Al2O3 as catalyst

A convenient approach for oxidation of structurally diverse alcohols has been developed using KMnO4 as oxidant agent in the presence of a catalytic amount of Al2O3 in aqueous acetonitrile. In this method various alcohols generally afforded the corresponding carbonyl compounds directly in good to high yield under ultrasound irradiation conditions. It shows that this kind of catalysis system is v...

Synthesis and Characterization of Nanostructured CuO/CeO2 Catalysts via Ultrasound Assisted Techniques used for Selective Oxidation of CO

Electrochemical oxidation of cholesterol

Indirect cholesterol electrochemical oxidation in the presence of various mediators leads to electrophilic addition to the double bond, oxidation at the allylic position, oxidation of the hydroxy group, or functionalization of the side chain. Recent studies have proven that direct electrochemical oxidation of cholesterol is also possible and affords different products depending on the reaction ...