Synthesis and sorption properties of new synthesized rare-earth-doped sodium titanate

Ismail Ali

doi:10.1007/s10967-010-0546-0

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 285: Issue 2

Synthesis and sorption properties of new synthesized rare-earth-doped sodium titanate

Author:

Ismail Ali

Ismail Ali Hot Labs. Centre, Atomic Energy Authority Cairo P. C. 13759 Egypt

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Pages:: 263–270

Online Publication Date:: 07 Apr 2010

Publication Date:: 01 Aug 2010

Article Category:: Research Article

DOI:: https://doi.org/10.1007/s10967-010-0546-0

Keywords:: Rare earth; Sodium titanate; Ion exchanger; Cesium; Kinetics

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Abstract

A series of rare-earth-doped sodium titanates with the chemical formula R_xH_yNa_{4 − (x+y)}TiO₄·nH₂O (where R = Ce³⁺, Nd³⁺ and Sm³⁺) were grown employing solid-state fusion reaction technique. The physico-chemical investigations indicated that the new materials were self engineered into large particles enough to be used in sorption process and having crystalline structures containing localized Na⁺ ions. Equilibrium studies revealed that an enhancement in sorption efficiency of sodium titanate after rare-earth doping. The neodymium-rich sodium titanate exhibited a better exchange affinity for Cs⁺ compared to the other studied series. Data on the kinetics of cesium exchange fit well to pseudo-second order and intra-particle diffusion models. In a separate experiment, it was reported that the R-HNaTi series showed responsible sorption affinity toward Ce, Nd and Sm ions in their solution mixture with insignificant selectivity trend which reflects the high stability of titanate matrices.

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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)