On the nucleophilic accession of 1H-benzotriazole to maleimides
https://doi.org/.org/10.21285/2227-2925-2019-9-1-13-21
Abstract
Organic polymers with N, S-functional groups are widely used as effective materials for the adsorption of transition metal ions. The adsorption of noble metals by copolymer of divinyl sulphide with 4-vinylpyridine has been studied in solutions of mineral acids. The copolymer under study has displayed high values of static sorption capacities, amounting to 1200, 340, 1040, 520 mg/g in Au (III), Ag (I), Pt (IV) and Pd (II), respectively. A comparative study of the Langmuir, Freundlich and Dubinin-Radushkevich adsorption models has been carried out to describe the experimental adsorption isotherms of noble metal ions on the surface of the copolymer under investigation. Constants and parameters of the considered adsorption models have been identified. Analysis of the values of the coefficients of determination R2 indicates that the adsorption of noble metal ions from sulphuric acid solutions and Ag from nitric acid solutions is most adequately described within the Langmuir model. The obtained results demonstrate that the adsorption of noble metal ions occurs on an energetically heterogeneous surface and represents a monomolecular process.
About the Authors
E. G. Filatova
National Research Irkutsk State Technical University
Russian Federation
Russian Federation
N. S. Shaglaeva
National Research Irkutsk State Technical University
Russian Federation
Russian Federation
Y. N. Pozhidaev
National Research Irkutsk State Technical University
Russian Federation
Russian Federation
D. B. Baginov
National Research Irkutsk State Technical University
Russian Federation
Russian Federation
L. M. Stanevich
Irkutsk State Medical University
Russian Federation
Russian Federation
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Review
For citations:
Filatova E.G., Shaglaeva N.S., Pozhidaev Y.N., Baginov D.B., Stanevich L.M. On the nucleophilic accession of 1H-benzotriazole to maleimides. Proceedings of Universities. Applied Chemistry and Biotechnology. 2019;9(1):13-21. (In Russ.) https://doi.org/.org/10.21285/2227-2925-2019-9-1-13-21
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