The adsorption processes of different para-substituted anilines from cyclohexane solution on natural sepiolite have been studied. The adsorption isotherms may be classified as type L-2 of the Giles classification in the p-bromoaniline and p-toluidine cases, and as type H-2 in the p-acetylaniline case.
The experimental data points have been fitted to the Langmuir equation and the adsorption capacities, surface areas available to the amine molecules and apparent equilibrium constants have been calculated. The apparent thermodynamic magnitudes corresponding to the adsorption processes have also been determined.
Get full access to this article
View all access options for this article.
References
1.
DoddC.G. and RayS.; (1959). Clays and Clay Minerals; Proc. Nath. Conf. Clays and Clay Minerals 8th, Normin, 237.
2.
GilesC.H.; McEwansT.H. and SmithD.; (1960). J. Am. Chem. Soc. 3973.
3.
González-PradasE.; Valverde-GarciaA.; Villafranca-SánchezM. and del Rey-BuenoF.; (1986). An. Quim. Serie B (in press).
4.
HauserE.A. and LeggetM.B.; (1940). J. Am. Chem. Soc. 62, 1811.
