Popa Alexandru; Borcanescu Silvana; Barvinschi Paul; Bajuk-Bogdanović Danica; Uskoković-Marković Snežana; Holclajtner-Antunović Ivanka: Effect of different swelling agents on textural and structural properties of modified mesoporous silica.
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Absztrakt (kivonat)
In this study was carried out the preparation of some large-pore ordered mesoporous silicas using a proper surfactant with different swelling agents. In order to use a micelle swelling agent with a moderate swelling ability we selected three swelling agents: 1-phenyldecane, butyl benzene and mesitylene. The aim of these synthesis was to achieve a pore diameter enlargement but in the same time to avoid the formation of heterogeneous and/or poorly defined nanostructure of silica. These composites were characterized by FT-IR spectroscopy, X-ray diffraction at low angles, nitrogen physisorption at 77 K, SEM-EDS. In the view of a possible use of these amino-functionalized mesoporous silicas as adsorbents for CO2 removal, their adsorption– desorption properties towards CO2 were investigated by the TPD method. CO2 adsorption isotherms of amino-functionalized mesoporous silicas measured at 50, 60 and 70 °C showed that the adsorption capacity (mg CO2/g adsorbent) depend on the temperature of adsorption and on the type of swelling agents and amination reagents used.
| Mű típusa: | Konferencia vagy workshop anyag |
|---|---|
| Befoglaló folyóirat/kiadvány címe: | Proceedings of the International Symposium on Analytical and Environmental Problems |
| Dátum: | 2019 |
| ISBN: | 978-963-306-702-4 |
| Oldalak: | pp. 226-230 |
| Konferencia neve: | International Symposium on Analytical and Environmental Problems (25.) (2019) (Szeged) |
| Befoglaló mű URL: | http://acta.bibl.u-szeged.hu/64947/ |
| Kulcsszavak: | Kémia |
| Megjegyzések: | Bibliogr.: 230. p. ; ill. ; összefoglalás angol nyelven |
| Feltöltés dátuma: | 2020. már. 19. 09:43 |
| Utolsó módosítás: | 2022. aug. 08. 15:37 |
| URI: | http://acta.bibl.u-szeged.hu/id/eprint/64832 |
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