H+/Li+ ion exchange in crystalline acid zirconium phosphate

Authors
Stenina, IA Yaroslavtsev, AB
Citation
Ia. Stenina et Ab. Yaroslavtsev, H+/Li+ ion exchange in crystalline acid zirconium phosphate, RUSS J IN C, 46(2), 2001, pp. 169-174
Citations number
15
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
RUSSIAN JOURNAL OF INORGANIC CHEMISTRY
ISSN journal
00360236 → ACNP
Volume
46
Issue
2
Year of publication
2001
Pages
169 - 174
Database
ISI
SICI code
0036-0236(200102)46:2<169:HIEICA>2.0.ZU;2-9
Abstract
The thermodynamics and kinetics of H+/Li+ ion exchange in acid zirconium ph osphate were studied. The equilibrium constants of three exchange stages we re determined, and the cation diffusion coefficients in the mono-, sesqui-, and disubstituted phases were calculated. The diffusion coefficient depend s on the hydrogen ion concentration and the nature of anions in solution. T he formation of nonequilibrium phases slows down ion exchange at the first and second stages. The first-stage rate curve has two minima.