Kinetic study of the isotopic exchange of Na+ and Zn2+ ions on iron and chromium titanates

E. Zakaria; I. Ali; H. Aly

doi:10.1023/b:jrnc.0000027114.32878.d2

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 260: Issue 2

Kinetic study of the isotopic exchange of Na⁺ and Zn²⁺ ions on iron and chromium titanates

Authors:

E. Zakaria

E. Zakaria Hot Laboratories Center, Atomic Energy Authority Nuclear Fuel Technology Department P.O. Box 13759 Cairo Egypt

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I. Ali

I. Ali Hot Laboratories Center, Atomic Energy Authority Nuclear Fuel Technology Department P.O. Box 13759 Cairo Egypt

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H. Aly

H. Aly Hot Laboratories Center, Atomic Energy Authority Nuclear Fuel Technology Department P.O. Box 13759 Cairo Egypt

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Pages:: 389–397

Online Publication Date:: 03 Nov 2004

Publication Date:: 01 May 2004

Article Category:: Research Article

DOI:: https://doi.org/10.1023/b:jrnc.0000027114.32878.d2

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Abstract

Iron(III) (FeTi) and chromium (III) titanates (CrTi) were prepared as cation exchange materials in a granular form. The rate of the isotopic exchange of Na⁺/*Na⁺ and Zn²⁺/*Zn²⁺ between aqueous solution and iron(III) and chromium(III) titanates in Na⁺ or Zn²⁺form has been carried out radiometrically in the 25-60 °C temperature range. The exchange rate is controlled by a particle diffusion mechanism and experimental and theoretical approaches have been used to obtain the rate of diffusion through the spherical particles of the exchangers. The values of self diffusion () of Na⁺ and Zn²⁺ ions were measured at different operation conditions, particle size, reaction temperatures and drying temperatures of the matrix. The values of kinetic and thermodynamic parameters were calculated and their significance discussed.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)