期刊
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A
卷 95, 期 8, 页码 1585-1590出版社
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0036024421080045
关键词
sulfonic acid cation exchanger KU-2; pyridine-3-carboxylic acid; iron(III) cations; ligand sorption; ion exchange; equilibrium constants
资金
- State Task for the Institute of Coal Chemistry and Chemical Materials Science [AAAA-A17-117041910146-5]
The study examines the equilibrium distribution of pyridine-3-carboxylic acid and iron(III) between an aqueous solution and sulfonic acid cation exchanger KU-2. Concentrations of individual components were calculated using the HySS 2009 program. Results showed that pyridine-3-carboxylic acid anions can form complex cations, and equilibrium constants were determined for ion exchange and ligand sorption in the system.
A study is performed of the equilibrium distribution of pyridine-3-carboxylic acid and iron(III) between an aqueous solution and sulfonic acid cation exchanger KU-2. The concentrations of individual components in solution are calculated using the HySS 2009 program. In the polymer phase, they are determined from the material balance of sorption. Pyridine-3-carboxylic acid anions (L-) are shown to be part of complex cations [FeL](2+) and [H2L](+). The equilibrium constants are determined for ion exchange and ligand sorption with the participation of pyridine-3-carboxylic acid, sulfonic acid cation exchanger KU-2, protons, and cations of iron(III).
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