Electron paramagnetic resonance of carbon adsorbents from phenol-formaldehyde oligomers and their ability to adsorb noble metals |
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| Authors: | R K Alekseenko L S Ivanova D I Shvets |
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| Institution: | (1) L. V. Pisarzhevskii Institute of Physical Chemistry, Academy of Sciences of the Ukrainian SSR, Kiev |
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| Abstract: | In order to establish the interrelation between the electronic characteristics of carbons that are manifested in the EPR spectra and their ability to adsorb complex gold and silver ions, the EPR spectra of carbon adsorbents from phenol-formaldehyde resins of various nature, unactivated and activated under various conditions, and the adsorption of Au(CN)2]– and Ag(CN)2]– from cyanide solutions on these same adsorbents were investigated. A parallel relation was observed between the amount of paramagnetic centers on carbon and its adsorption capacity and selectivity in relation to these anions.Translated from Teoreticheskaya i Éksperimental'naya Khimiya, Vol. 26, No. 6, pp. 742–745, November–December, 1990. |
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