Three n-alkylammonium salts of varying alkyl chain length were ion exchanged with montmorillonites (MMT) of different cation exchange
capacity (CEC). The intercalated MMTs were characterized by thermogravimetry (TG), XRD, FTIR to acquire an insight into the
intergallery structural arrangement of the organic alkylammonium cations (AAC). The increment in the intergallery spacing
from XRD pattern was correlated with chain length and interlayer arrangement of AAC. Multiple organic mass-loss stages in
thermogravimetric analysis indicate two types of anchorage of AAC in intercalated clay. CEC of MMT was found to influence
the intergallery confinement and excess adsorption of AAC.