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Issue 11, 2000
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The effect of H+ irradiationon the Cs-ion exchange capacity of zeolite-NaY

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Abstract

Radiation effects on zeolite-NaY have been investigated by irradiation with a 500 keV H+ beam. Zeolite-NaY suffers structural damage under proton irradiation. The crystalline-to-amorphous transition occurs at a total dose equivalent to an ionizing energy deposition of 3 × 1010 Gy and a displacement dose of 0.05 dpa (displacements per atom). The ion exchange capacity of the irradiated zeolite-NaY with 10 mM CsCl solution varies with the extent of damage to the crystalline structure. After 25 hours of exchange, the Cs-concentration in the amorphous region is ∼0.8 wt.%, which is much lower than in the undamaged region (∼20 wt.%). This result confirms that radiation-induced amorphization can cause a significant loss of ion exchange capacity. The data also suggest that the radiation damage by proton radiation in zeolite-NaY is caused by both ionizing and displacement processes. Mechanisms related to the radiation-induced change in the ion exchange capacity are discussed.

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Publication details

The article was received on 28 Mar 2000, accepted on 18 Aug 2000 and first published on 06 Oct 2000


Article type: Paper
DOI: 10.1039/B002473M
Citation: J. Mater. Chem., 2000,10, 2610-2616
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    The effect of H+ irradiation on the Cs-ion exchange capacity of zeolite-NaY

    B. Gu, L. Wang, S. Wang, D. Zhao, V. H. Rotberg and R. C. Ewing, J. Mater. Chem., 2000, 10, 2610
    DOI: 10.1039/B002473M

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