Study of Electrochemical Properties of Copper in Solution of Sulphuric Acid With Copper (Ii) Ions and Titan Through Potentiodynamic Polarized Curve

Baeshov, A. B.; Abizhanova, Dinara; Abduvaliyeva, Umida; Zhurinov, Murat

doi:10.32014/2019.2518-1467.62

Cited by 2 publications

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“…A large number of works is focused on the study of electrochemical methods of production of finely dispersed metal powders at direct current, requiring the use of additional equipment for rectifying alternating current, the need to use chemically resistant electrodes in various environments, and in some cases, use of membranes to separate the electrode spaces, thereby complicating the process [1][2][3]. Current method is also distinguished by a complex electrolyte composition, which contains salts of metals under consideration, various additives, including organic compounds [4][5][6]. It should be noted that increased current intensity leads to passivation of the anodes and formation of impurities in the main product.…”

Section: Introductionmentioning

confidence: 99%

Study of Kinetics of Copper Oxidation by Electrolysis Under Non-Stationary Conditions

Mamyrbekova¹,

Mamyrbekova²,

Kassymova³

et al. 2021

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Data on the study of the kinetics and mechanism of copper electro-oxidation -reduction processes in alkaline and neutral solutions were obtained in this work. Patterns of the electrochemical oxidation of copper using alternating current were established. Based on the data of polarisation measurements kinetic parameters were calculated: the heterogeneous rate constant, the effective activation energy of copper electro-oxidation, which allow to establish the course of the metal oxidation process in alkaline and neutral environments and its characteristics. Potentiodynamic measurements in alkaline solutions at a copper anode indicate the formation of Cu2O, CuO и Cu(OH)2. Anodic dissolution of copper in neutral salt solutions includes two main stages: the formation of Cu(I) and Cu(II) ions. It was found that the product of oxidation at high potentials is the Cu(II) ion. The nature of the anion electrolyte affects the rate of copper anodic oxidation, while the process occurs more efficiently in solutions of sulfate and sodium chloride and is accompanied by significant polarisation. Based on the study of kinetics the possibility of obtaining powders of metal oxide was shown, which further allowed to determine the parameters of the electrolysis process in non-stationary conditions in order to obtain highly dispersed materials based on copper oxides with specific physico-chemical properties.

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Section: Introductionmentioning

confidence: 99%

Study of Kinetics of Copper Oxidation by Electrolysis Under Non-Stationary Conditions

Mamyrbekova¹,

Mamyrbekova²,

Kassymova³

et al. 2021

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“…The inhibitory effect of the additive depends on the nature of the anions of the electrolyte, so it is impossible to predict continuation of the effect of inhibition in different electrolytes. If we know the general patterns of the effect organic substances have on the anions of a background electrolyte and their interaction with them, we can interpret the mechanism of electrode processes, and in some cases adjust the rate of electrochemical reactions [16][17][18].…”

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confidence: 99%

Effect of Surfactants on the Reduction of Lead(ii) Ions on Lead Electrode

Bayeshov¹,

Mamyrbekova²,

Kassymova

et al. 2020

Series Chemistry and Technology

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The effect high molecular weight water-soluble surfactants with different functional groups have on the electroreduction of lead(II) ions on a lead electrode in various electrolytes is studied. A copolymer of methacryloylaminophenol with acrylic acid, a leather waste hydrolyzate, and a copolymer of monoethanolamine with vinyl ether acetate are used as surfactants. The electrolytes that are used are 1 M KCl, KBr, KNO3, HCOONa, NH2SO3H, 0.5 M Na2SO4, and 0.35 M Na3C6H5O7 .2H2O. It is shown that in 1.0 M KCl or KBr solutions, there is no inhibition of the electroreduction of lead(II) ions by the adsorption layers of surfactants. It is found that the inhibitory effect of polymers on the electroreduction of lead(II) ions in different background electrolytes increases in the order KCl > KBr > Na3C6H5O7.2H2O > Na2SO4 > KNO3 > HCOONa > NH2SO3H. Key words: lead ions, electroreduction, surfactants, electrolyte, lead electrode, exchange current.

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Study of Electrochemical Properties of Copper in Solution of Sulphuric Acid With Copper (Ii) Ions and Titan Through Potentiodynamic Polarized Curve

Cited by 2 publications

References 0 publications

Study of Kinetics of Copper Oxidation by Electrolysis Under Non-Stationary Conditions

Study of Kinetics of Copper Oxidation by Electrolysis Under Non-Stationary Conditions

Effect of Surfactants on the Reduction of Lead(ii) Ions on Lead Electrode

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