New development of inorganic ion exchanger: Synthesis of New Zirconium Based Ion Exchangers and Their Characterization
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Inorganic ion-exchangers zirconium antimonophosphate (ZrSbP) and zirconium phosphotungstate (ZrPW) are synthesized and characterised as weakly acidic ion exchangers by potentiometric titrations against alkali metal hydroxides. Chemical composition, ion-exchange capacity for alkali and alkaline earth metal ions, distribution coefficients for a number of metal ions, effect of heat treatment on ion-exchange capacity are reported for the ion-exchangers. ZrSbP and ZrPW show excellent chemical stabilities towards most of the aqueous media except alkaline solutions. The exchanger ZrSbP loses only 30% of its ion-exchange capacity upto 200°C. An extensive study of distribution coefficients for various metal ions suggests that ZrSbP is selective for Fe<SUP>2+</SUP>, Pb<SUP>2+</SUP> and Ba<SUP>2+</SUP> ions while ZrPW is selective for Fe<SUP>3+</SUP> ions. Structural studies of these materials are carried out using XRD, IR and chemical analysis.
- 日本イオン交換学会の論文
日本イオン交換学会 | 論文
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