Texture Evaluation of an Acid Activated Interstratified Illite-Smectite

Abstract

The change of the pore structure and the adsorption properties
of an interstratified illite-smectite of Tunisia after treatment with 3
M HCI at 0.5, 2, 4, 7 and during 20 h were investigated. The pore
size distribution, specific surface areas according to BET method,
V_a-t plot, Dubinin-Radushkevich equation and f-plot were determined
by the nitrogen adsorption. The results show that with the
increase of the time treatment, the total pore volume increased,
while the maximum value of the specific surface area was attained
by the sample treated at 4 h. The difference between the pore
structure and the adsorption properties were caused by the structural
change and the decomposition of the samples.