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Updated: Jul 5, 2026

Synthesis of Zeolites Using the ADOR (Assembly-Disassembly-Organization-Reassembly) Route
Published on: April 3, 2016
Ion exchange of ammonium in natural and synthesized zeolites
Yifei Wang1, Feng Lin, Wenqin Pang
1College of Biology and Chemical Engineering, Jiaxing University, Jiaxin, Zhejiang 314001, PR China. yifeiwang0206@yahoo.com.cn
Abstract:
In this study, zeolite Na-P and Na-Y was prepared by hydrothermal treatment of the Chinese natural clinoptilolite with NaOH. The ion exchange of NH4+ into the three zeolites in the temperature range of 288-333K was also investigated, and the thermodynamic parameters were calculated. The selectivity sequence for NH4+ entering the sodium form of the three materials was Na-clinoptilolite>Na-Y>Na-P, as indicated by values of DeltaG degrees . The results demonstrated that the Si/Al molar ratio of zeolites determined the selectivity for NH4+.
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