Synthetic inorganic ion-exchange materials—I zirconium phosphate

Cation Exchange and Sorption Properties of Crystalline α-Titanium(IV) Phosphate

“…The titration curves show a very diffuse inflection region, indicating several dissociable hydrogen atoms. The prolonged branch of curve above pH 9.2 (300 K), 9.0 (310 K), and 7.8 (320 K) may be explained by titration of less acidic groups, including ≡Ti-OH groups (25). Figure 5 shows that the titration curve of α-TiP in KCl in the presence of Fe 3+ , Cr 3+ , Cu 2+ , Ni 2+ , Co 2+ , and Mn 2+ shifts the pH to a lower value in comparison to the blank titration, which was also observed in the case of AlPO 4 and Al(OH) 3 (15).…”

Titanate Nanofibers as Intelligent Absorbents for the Removal of Radioactive Ions from Water

“…[1][2][3][4][5][6][7][8] Natural inorganic cation exchange materials, such as clays and zeolites, have been extensively studied and used in the removal of radioactive ions from water via ion exchange and are subsequently disposed of in a safe way. [9,10] Synthetic inorganic cation exchange materials, such as synthetic micas, [2,4] g-zirconium phosphate, [1] niobate molecular sieves, [5,6] and titanate, [8,11] have also been studied for this particular purpose. Synthetic exchange materials are by far superior to natural materials in terms of selectivity for the removal of radioactive cations from water.…”

Kinetics and mechanism of ion exchange sorption of some detergents on zinc ferrocyanide

“…The observed concentrations of detergents for the particle-diffusion mechanism are considerably less than those reported for the exchange sorption of some simple as well as complex cations on various sorbents (14)(15)(16)(21)(22)(23)(24)(25)(26)(27)(28). It is well known that the rate of uptake and mobility of ions in solution effectively determine the characteristics of the liquid film surrounding the sorbent particle.…”