THE ADSORPT ION OF AROMATIC, HETEROCYCL IC AND CYCLIC AMMONIUM CATIONS BY MONTMORILLONITE

ABSTRACT: The adsorption of organic ions derived from ammonium, containing aromatic and saturated rings, was studied using different techniques. The ions with acid character p oduced a complicated set of reactions including aluminium extraction, proton adsorption, a real ion-exchange with the organic ions and an excess adsorption of ammonium salts. With non-acidic ompounds only a stoichiometric/on-exchange process was observed. X-ray diffraction and infrared spectroscopy were used to determine the orientation of the organic ions and to characterize the nature of the co-adsorbed organic material