| Autor: |
Roe-Hoan Yoon, Ronald Woods, D.S. Kim, C.I. Basilio |
| Rok vydání: |
1994 |
| Předmět: |
|
| Zdroj: |
International Journal of Mineral Processing. 42:215-223 |
| ISSN: |
0301-7516 |
| DOI: |
10.1016/0301-7516(94)90014-0 |
| Popis: |
The interaction of ethyl xanthate with copper electrodes has been investigated by UV-Vis and ex situ FTIR spectroscopies. Xanthate was found to be abstracted from solution in the potential region in which previous studies indicated xanthate to be chemisorbed on copper, and to reappear in solution when the potential was returned to more negative values. The results confidently establish that the process occurring in this potential region is the reversible chemisorption of xanthate. FTIR reflectance spectra characteristic of xanthate were observed after holding the potential at values corresponding to high surface coverage of chemisorbed xanthate, as well as in the region in which bulk copper xanthate deposits. The failure to observe xanthate spectra when medium and low xanthate coverages are present on copper electrodes is shown to result from oxidation of chemisorbed xanthate. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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