Journal of Radioanalytical and Nuclear Chemistry
Volume/Issue:
Volume 198: Issue 2
Preparation, characterization of crystalline zirconium phosphates and study on their acid stability and ion exchange behavior with uranyl ions
Authors:
Song Yinjie Lanzhou University Department of Modern Physics 730000 Lanzhou, Gansu Province (P.R. China)

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Zhang Hui Lanzhou University Department of Modern Physics 730000 Lanzhou, Gansu Province (P.R. China)

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Yang Qiaoling Lanzhou University Department of Modern Physics 730000 Lanzhou, Gansu Province (P.R. China)

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Zhao Aimin Lanzhou University Department of Modern Physics 730000 Lanzhou, Gansu Province (P.R. China)

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Pages:
375–384
Online Publication Date:
13 Aug 2005
Publication Date:
17 Dec 1995
Article Category:
Research Article
DOI:
https://doi.org/10.1007/bf02036553
Restricted access

Abstract  

Two kinds of crystalline zirconium phosphate, - and -ZrP were prepared by direct method, and characterized by means of X-ray powder diffractometry, thermogravimetric analysis and pH titration. The total exchange capacity of -ZrP and -ZrP for Na+ ions determined by pH titration was 8.80 mmol/(g Zr(HPO4)2·6H2O) and 3.80 mmol/(g NH4ZrH(PO4)2·H2O), respectively. The thermodynamic equilibrium constant of exchange reactions on -ZrP and on -ZrP at 25.0°C is 2.5 and 1.1, respectively. Although UO 22+ in solution is more preferred by -ZrP than by -ZrP, the selectivity of -ZrP for UO 22+ decreases with decreasing pH value while less effect of pH on the amount of UO 22+ ions exchanged to -ZrP has been found. It is also interesting to find out that both H+ and NH 4+ ions in -ZrP can be replaced by UO 22+ ions existed in concentrated solution.

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Cover Journal of Radioanalytical and Nuclear Chemistry
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)

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