Pertukaran fasa zeolit asli ke fasa zeolit sintetik yang dicirikan oleh XRD bagi menghasilkan bahan penukar ION

Abstract

In this study, natural mordenite was modified to other zeolites phases having low Si/Al in order to increase the cation exchange capacity of the material. Modification was carried out hydrothermally at 100oC in time range between 0 to 24 hours. The samples obtained were characterized by XRD and infrared spectroscopy. Results showed that a mixture of zeolite X and P were formed zeolite X was the dominant zeolite at 6 hrs heating time while zeolite P were dominant after 6 hrs. Ion Exchange capacity of natural mordenite, samples at 6 hr and 24 hrs heating, performed using Ca2+ cation gave cation exchange in the decreasing order of 83.57% , 72.50%, 69.45% for sample 24 hrs, 6 hrs and natural mordenite respectively. It indicates that sample having zeolite P phase is the best cation exchange capacity with 21 mg Ca2+/g zeolite with an increased of 23% capacity compared to natural zeolite.