Electrochemical investigation of cold worked copper in alkaline solution with the presence of potassium ethyl xanthate
This paper presents the investigation results of the electrochemical behavior of copper in 1 M Na2CO3 solution in the presence of potassium ethyl xanthate (KEtX) with different concentrations. Tests were conducted on copper samples obtained without deformation and with deformation of 83, 91...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Association of Chemical Engineers of Serbia
2014-01-01
|
| Series: | Hemijska Industrija |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0367-598X/2014/0367-598X1300055I.pdf |
| _version_ | 1811266015458230272 |
|---|---|
| author | Ivanov Svetlana Lj. Rajčić-Vujasinović Mirjana M. Petrović Jasmina Lj. Grekulović Vesna J. Mladenović Srba A. |
| author_facet | Ivanov Svetlana Lj. Rajčić-Vujasinović Mirjana M. Petrović Jasmina Lj. Grekulović Vesna J. Mladenović Srba A. |
| author_sort | Ivanov Svetlana Lj. |
| collection | DOAJ |
| description | This paper presents the investigation results of the electrochemical behavior
of copper in 1 M Na2CO3 solution in the presence of potassium ethyl xanthate
(KEtX) with different concentrations. Tests were conducted on copper samples
obtained without deformation and with deformation of 83, 91 and 99 %. Samples
were obtained by cold drawing of wire, which was previously obtained by
dip-forming procedure. Corrosion behavior of cold deformed copper wire is
characterized by its open circuit potential and behavior during anodic
polarization. Experiments were carried out in aqueous solution 1 M Na2CO3
with added various amounts of KEtX between 0.008 g/l and 0.15 g/l. It was
experimentally proved that the degree of deformation between 83 and 99 % does
not have a large effect on the open circuit potential, as well as on the
behavior of copper during anodic polarization in 1 M Na2CO3. Voltammograms
show no significant differences between peak heights obtained for different
electrodes. The first peak which occurs at potential of around -0.06 V vs.
SCE corresponds to the formation of copper oxide Cu2O. The second wide peak
is at potential of around 0.15 V vs. SCE and corresponds to the formation of
CuO. Addition of potassium ethyl xanthate in alkaline 1 M Na2CO3 solution
changes the mechanism of the process in anodic part, which is reflected in
the change of shape of voltammograms. In presence of KEtX in concentration
between 0.008 g/l and 0.15 g/l on voltammograms a sharp peak appears at
potential of about -0.2 V vs. SCE and corresponds to the oxidation of
xanthate. Current density, which determines the rate of the process which
takes place at the electrode surface, yet in the presence of smallest amounts
of KEtX (<0,08 g/l) is higher than in the absence of KEtX. It allows one to
conclude that the processes of oxidation of copper accelerate in presence of
potassium ethyl xanthate. |
| first_indexed | 2024-04-12T20:34:26Z |
| format | Article |
| id | doaj.art-f0d77336323a4fa5bf3b7f3d68eace8f |
| institution | Directory Open Access Journal |
| issn | 0367-598X 2217-7426 |
| language | English |
| last_indexed | 2024-04-12T20:34:26Z |
| publishDate | 2014-01-01 |
| publisher | Association of Chemical Engineers of Serbia |
| record_format | Article |
| series | Hemijska Industrija |
| spelling | doaj.art-f0d77336323a4fa5bf3b7f3d68eace8f2022-12-22T03:17:39ZengAssociation of Chemical Engineers of SerbiaHemijska Industrija0367-598X2217-74262014-01-0168327928810.2298/HEMIND130427055I0367-598X1300055IElectrochemical investigation of cold worked copper in alkaline solution with the presence of potassium ethyl xanthateIvanov Svetlana Lj.0Rajčić-Vujasinović Mirjana M.1Petrović Jasmina Lj.2Grekulović Vesna J.3Mladenović Srba A.4Tehnički fakultet, BorTehnički fakultet, BorTehnički fakultet, BorTehnički fakultet, BorTehnički fakultet, BorThis paper presents the investigation results of the electrochemical behavior of copper in 1 M Na2CO3 solution in the presence of potassium ethyl xanthate (KEtX) with different concentrations. Tests were conducted on copper samples obtained without deformation and with deformation of 83, 91 and 99 %. Samples were obtained by cold drawing of wire, which was previously obtained by dip-forming procedure. Corrosion behavior of cold deformed copper wire is characterized by its open circuit potential and behavior during anodic polarization. Experiments were carried out in aqueous solution 1 M Na2CO3 with added various amounts of KEtX between 0.008 g/l and 0.15 g/l. It was experimentally proved that the degree of deformation between 83 and 99 % does not have a large effect on the open circuit potential, as well as on the behavior of copper during anodic polarization in 1 M Na2CO3. Voltammograms show no significant differences between peak heights obtained for different electrodes. The first peak which occurs at potential of around -0.06 V vs. SCE corresponds to the formation of copper oxide Cu2O. The second wide peak is at potential of around 0.15 V vs. SCE and corresponds to the formation of CuO. Addition of potassium ethyl xanthate in alkaline 1 M Na2CO3 solution changes the mechanism of the process in anodic part, which is reflected in the change of shape of voltammograms. In presence of KEtX in concentration between 0.008 g/l and 0.15 g/l on voltammograms a sharp peak appears at potential of about -0.2 V vs. SCE and corresponds to the oxidation of xanthate. Current density, which determines the rate of the process which takes place at the electrode surface, yet in the presence of smallest amounts of KEtX (<0,08 g/l) is higher than in the absence of KEtX. It allows one to conclude that the processes of oxidation of copper accelerate in presence of potassium ethyl xanthate.http://www.doiserbia.nb.rs/img/doi/0367-598X/2014/0367-598X1300055I.pdfcopperdegree of deformationsodium carbonateanodic polarizationpotassium ethyl xanthate |
| spellingShingle | Ivanov Svetlana Lj. Rajčić-Vujasinović Mirjana M. Petrović Jasmina Lj. Grekulović Vesna J. Mladenović Srba A. Electrochemical investigation of cold worked copper in alkaline solution with the presence of potassium ethyl xanthate Hemijska Industrija copper degree of deformation sodium carbonate anodic polarization potassium ethyl xanthate |
| title | Electrochemical investigation of cold worked copper in alkaline solution with the presence of potassium ethyl xanthate |
| title_full | Electrochemical investigation of cold worked copper in alkaline solution with the presence of potassium ethyl xanthate |
| title_fullStr | Electrochemical investigation of cold worked copper in alkaline solution with the presence of potassium ethyl xanthate |
| title_full_unstemmed | Electrochemical investigation of cold worked copper in alkaline solution with the presence of potassium ethyl xanthate |
| title_short | Electrochemical investigation of cold worked copper in alkaline solution with the presence of potassium ethyl xanthate |
| title_sort | electrochemical investigation of cold worked copper in alkaline solution with the presence of potassium ethyl xanthate |
| topic | copper degree of deformation sodium carbonate anodic polarization potassium ethyl xanthate |
| url | http://www.doiserbia.nb.rs/img/doi/0367-598X/2014/0367-598X1300055I.pdf |
| work_keys_str_mv | AT ivanovsvetlanalj electrochemicalinvestigationofcoldworkedcopperinalkalinesolutionwiththepresenceofpotassiumethylxanthate AT rajcicvujasinovicmirjanam electrochemicalinvestigationofcoldworkedcopperinalkalinesolutionwiththepresenceofpotassiumethylxanthate AT petrovicjasminalj electrochemicalinvestigationofcoldworkedcopperinalkalinesolutionwiththepresenceofpotassiumethylxanthate AT grekulovicvesnaj electrochemicalinvestigationofcoldworkedcopperinalkalinesolutionwiththepresenceofpotassiumethylxanthate AT mladenovicsrbaa electrochemicalinvestigationofcoldworkedcopperinalkalinesolutionwiththepresenceofpotassiumethylxanthate |