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Title: | The Kinetics of Adsorption Binding of Ba2+ Ions by Trimethylsilylated Silica |
Other Titles: | Кінетика адсорбційного зв"язування йонів барію |
Authors: | Mironyuk, Ivan Fedorovich Vasylyeva, Hanna Volodymyrivna Mandzyuk, Volodymyr Ivanovych Bezruka, Nataliya Dmytrotsa, T. |
Keywords: | кінетика, адсорбція, барій, аеросил |
Issue Date: | Mar-2018 |
Publisher: | Прикарпатський національний університет ім.В.Стефаника |
Citation: | стаття |
Abstract: | t was established that incomplete substitution of free silanols of fumed silica surface on (CH3)3Si-groups leads to an increase in the ability of modified SiO2 to adsorb Ba2+ cations from an electrolyte solution. Silica with 48.3% of trimethylsilyl (TMS) groups adsorbs 1.8 mmol·g-1 of Ba2+ cations from 0.01 M BaCl2 solution, that in 3 times more than the adsorption of these cations by unmodified silica. It was found that the adsorption of cations by basic and modified silica is well described by the pseudo-second-order Lagergren equation. The high adsorption activity of silica with chemisorbed TMS-groups is due to the formation of local regions with relatively large values of negative and positive electrostatic potentials in the vicinity of grafted TMS-groups. |
Description: | У статті описано особливості адсорбції йонів барію аеросилами |
Type: | Text |
Publication type: | Стаття |
URI: | https://dspace.uzhnu.edu.ua/jspui/handle/lib/37390 |
Appears in Collections: | Наукові публікації кафедри теоретичної фізики |
Files in This Item:
File | Description | Size | Format | |
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1901-10 Ads kinetic of Barium by silica.pdf | 1.13 MB | Adobe PDF | View/Open |
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