| Titre : | Anion-exchange reactions of layered double hydroxides : interplay between coulombic and H-bonding interactions (2009) |
| Auteurs : | S. V. Prasanna, Auteur ; P. Vishnu Kamath, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 48 N° 13, Juillet 2009) |
| Article en page(s) : | pp. 6315–6320 |
| Note générale : | Chemical engineering |
| Langues : | Anglais |
| Tags : | Layered double hydroxides Anions Nonequilibrated conditions Cl− ; NO3− ; ions |
| Résumé : | The NO3−- and Cl−-containing layered double hydroxides (LDHs) of Mg with Al interact weakly with anions in solution under equilibrated conditions and yield a type V isotherm. The uptake of anions under nonequilibrated conditions varies monotonically with the layer charge when the outgoing anion is NO3−, whereas it goes through a maximum when the outgoing anion is Cl−. These observations suggest that Coulombic interactions play a dominant role in Cl−-LDHs, whereas weak interactions governing the mode of intercalation of NO3− ions influence the exchange reactions of NO3−-LDHs. These studies have significant implications for the remediation of insidious anions by LDHs. |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie9004332 |
