| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9617799 | Microporous and Mesoporous Materials | 2005 | 5 Pages |
Abstract
This work studied the ion exchange of Cu2+, Ni2+, Pb2+ and Zn2+ into an analcime (ANA) in the temperature range 298-333Â K. The analcime was produced from an economically available Thai perlite. The selectivity sequence for ions entering analcime in its as-synthesized sodium form was Pb2+Â >Â Cu2+Â >Â Zn2+Â >Â Ni2+, as indicated by values of ÎG0. The results demonstrated that the enthalpy of cation hydration determined the selectivity of the zeolite. ÎS0 values were related to changes in water content. A comparison of the selectivity series for Pb, Cu, Ni, and Zn cation uptake into analcime to those of other zeolites shows similar trends.
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Authors
Sudaporn Tangkawanit, Kunwadee Rangsriwatananon, Alan Dyer,