The Malaysian Journal of Analytical Sciences Vol 12 No 1 (2008): 240 – 244

 

 

PERTUKARAN FASA ZEOLIT ASLI KE FASA ZEOLIT SINTETIK YANG DICIRIKAN OLEH XRD BAGI MENGHASILKAN BAHAN PENUKAR ION

 

Zainab Ramli, Dewi Jamaliah Kamsiar dan Hasidah Mohd Arsat

 

Jabatan Kimia, Fakulti Sains,Universiti Teknologi Malaysia,

81310 UTM Skudai, Johor, Malaysia.

 

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 100^oC 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.

 

Keywords: Natural zeolite, ion exchange, zeolite X, zeolite Y

 

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