Exchange Capacity of Polysiloxane Ion Exchangers Modified with Dithiooxamide Groups with Respect to Silver(I), Platinum(IV), and Palladium(II)
- Autores: Neudachina L.1, Kholmogorova A.1, Puzyrev I.1,2, Galieva Z.1
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Afiliações:
- Ural Federal University named after the first President of Russia B.N. Yeltsin
- Postovsky Institute of Organic Synthesis, Ural Branch, Russian Academy of Sciences
- Edição: Volume 92, Nº 11 (2018)
- Páginas: 2309-2314
- Seção: Physical Chemistry of Surface Phenomena
- URL: https://journals.rcsi.science/0036-0244/article/view/170220
- DOI: https://doi.org/10.1134/S0036024418110304
- ID: 170220
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Resumo
A polysiloxane with attached groups of rubeanic acid is proposed for the extraction of silver(I), platinum(IV) and palladium(II) from dilute aqueous systems. The sorbent is synthesized for the first time via modern sol–gel technology and has a high degree of surface modification; the concentration of the attached dithiooxamide groups is 0.90 mmol/g. Isotherms of the sorption of silver(I), platinum(IV), and palladium(II) from individual solutions are constructed. The curves are mathematically processed with the Langmuir, Freundlich, Redlich–Peterson, Langmuir–Freundlich, and Toth equations, so exchange capacity values are determined for the modified polysiloxane. The sorbent has good capacitive characteristics and can be used to accumulate large amounts of noble metal ions.
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Sobre autores
L. Neudachina
Ural Federal University named after the first President of Russia B.N. Yeltsin
Email: kholmoghorovaa@mail.ru
Rússia, Yekaterinburg, 620075
A. Kholmogorova
Ural Federal University named after the first President of Russia B.N. Yeltsin
Autor responsável pela correspondência
Email: kholmoghorovaa@mail.ru
Rússia, Yekaterinburg, 620075
I. Puzyrev
Ural Federal University named after the first President of Russia B.N. Yeltsin; Postovsky Institute of Organic Synthesis, Ural Branch, Russian Academy of Sciences
Email: kholmoghorovaa@mail.ru
Rússia, Yekaterinburg, 620075; Yekaterinburg, 620990
Z. Galieva
Ural Federal University named after the first President of Russia B.N. Yeltsin
Email: kholmoghorovaa@mail.ru
Rússia, Yekaterinburg, 620075