THE IMPORTANCE OF CERIUM SUBSTITUTED PHOSPHATES AS CATION EXCHANGERSOME UNIQUE PROPERTIES AND RELATED APPLICATION POTENTIALS

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NILCHI A.; KHANCHI A.; GHANADI M.

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Paper Information

Journal: JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY Year:2002 | Volume:- | Issue:25 Page(s): 0-0

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Title

THE IMPORTANCE OF CERIUM SUBSTITUTED PHOSPHATES AS CATION EXCHANGERSOME UNIQUE PROPERTIES AND RELATED APPLICATION POTENTIALS

Author(s)

NILCHI A. | KHANCHI A. | GHANADI M. | Issue Writer Certificate

Keywords

INORGANIC ION EXCHANGERS

CERIUM PHOSPHATE

DISTRIBUTION COEFFICIENT

BINARY SEPARATIONS.

Abstract

Seven different samples of an inorganic ion exchanger, CERIUM PHOSPHATE, suitable for column use have been prepared under varying conditions. The property of these exchangers has been characterized by Inductively Coupled Plasma Spectroscopy. These exchangers are stable in water, dilute mineral acids, ethanol, methanol, acetone and ether. However, in concentrated HCl and HNO3 they decompose. They retain about 50% of their exchange value after drying at 80 C, and can be regenerated twice without any decrease in exchange capacity. The DISTRIBUTION COEFFICIENT measurements for alkaline earth metals, tellurium, iodine and molybdenum using these seven ion exchangers were studied. This revealed the relative affinity for each exchanger, where the sorption in general was most effective at pH 6-8. The titration curves of CERIUM PHOSPHATE (disodium) with alkaline earth metals showed that the selectivity sequence Ba2+>Sr2+>Ca2+>Mg2+ is observed. Furthermore, it could be deduced that the adsorption of alkaline earth metal cations greatly depends on the cation. These studies have also shown that CERIUM PHOSPHATEs with divalent ions are strongly preferred to monovalent ones. Therefore, as for the CERIUM PHOSPHATEs with large monovalent ions, the lack of exchange for Ba2+, Mg2+ or other alkaline earth metal ions should be essentially due to steric hindrance and this could include any one of the following: the large crystalline radius of metal ions or large hydrated ionic radius and high energy of hydration for other divalent ions. Three BINARY SEPARATIONS.of TeIV - MoVI , TeIV - I1 and MoVI - Il has been developed and the recovery ranging from 90 to 100% has been achieved on CERIUM PHOSPHATE (disodium) columns.

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APA: Copy

NILCHI, A., KHANCHI, A., & GHANADI, M.. (2002). THE IMPORTANCE OF CERIUM SUBSTITUTED PHOSPHATES AS CATION EXCHANGERSOME UNIQUE PROPERTIES AND RELATED APPLICATION POTENTIALS. JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, -(25), 0-0. SID. https://sid.ir/paper/529015/en

Vancouver: Copy

NILCHI A., KHANCHI A., GHANADI M.. THE IMPORTANCE OF CERIUM SUBSTITUTED PHOSPHATES AS CATION EXCHANGERSOME UNIQUE PROPERTIES AND RELATED APPLICATION POTENTIALS. JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY[Internet]. 2002;-(25):0-0. Available from: https://sid.ir/paper/529015/en

IEEE: Copy

A. NILCHI, A. KHANCHI, and M. GHANADI, “THE IMPORTANCE OF CERIUM SUBSTITUTED PHOSPHATES AS CATION EXCHANGERSOME UNIQUE PROPERTIES AND RELATED APPLICATION POTENTIALS,” JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, vol. -, no. 25, pp. 0–0, 2002, [Online]. Available: https://sid.ir/paper/529015/en

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