| Titre : | Catalytic effect of magnesium ions on silicic acid polycondensation and inhibition strategies based on chelation (2012) |
| Auteurs : | Konstantinos D. Demadis, Auteur ; Antonia Ketsetzi, Auteur ; Eva-Maria Sarigiannidou, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 51 N° 26, Juillet 2012) |
| Article en page(s) : | pp. 9032-9040 |
| Note générale : | Industrial chemistry |
| Langues : | Anglais |
| Tags : | Condensation polymerization Catalytic reaction |
| Résumé : | The catalytic role of Mg2+ ions in the polycondensation of silicic acid to form amorphous silica has been investigated in detail. This behavior is pH-dependent. As pH increases (herein, the three pH values 8.0, 9.0, and 9.5 were tested), the catalytic effect of Mg2+ ions becomes more pronounced. Also, this behavior is directly proportional to the concentration of Mg2+. Ethylenediaminetetraacetic acid (EDTA) can inhibit this catalytic effect by strongly chelating the Mg2+ ions. This research can be further expanded to other chelating agents that have an affinity for Mg2+ ions. |
| ISSN : | 0888-5885 |
| En ligne : | http://cat.inist.fr/?aModele=afficheN&cpsidt=26107461 |
