The modified clay was prepared by intercalation
method and heat treatment on a commercial kaolin LW
clay.TheLW clay was chosen becauseof itshighestcation
exchangecapacity.Theintercalationclay was prepared by
using 50 g of LW clay soaked in 3, 4, 5, 6, 7, and 8 M of
KAc solution of 100 ml for 3 days. All suspensions were
filtrated using vacuum filtration and dried at 100°C. The
modified clay was prepared by heating the intercalation
clay at 350°C for 1 hr.