Role of stannic phosphate in the uptake of cations. Separation of zirconium from thorium and cadmium from indium at tracer concentrations

The Effect of Hydrothermal, Microwave, and Mechanochemical Treatments of Tin Phosphate on Sorption of Some Cations

“…The most revealing in this regard is the effect of increasing the temperature of HTT of the wet gel on the porous structure and, as a result, on the sorption of uranium (samples Nos. [8][9][10][11]. These relationships are shown in Figure 5.…”

“…The increased attention paid to inorganic ion exchangers is associated with the instability of organic resins to high temperatures and strong ionizing ability [ 1 ]. Therefore, inorganic materials are promising for the removal of radionuclides from wastewater [ 5 , 6 , 7 , 8 , 9 ]. Due to Bronsted acidity, the amorphous and crystalline tetravalent metal phosphates as water-insoluble salts have many characteristics that are important from a practical point of view, namely, thermostability, resistance to acid, alkali and oxidation media, as well as high ion exchange capacity and sorption affinity, including to Cs(I), U(VI), and Sr(II) ions [ 1 , 2 , 3 , 7 , 10 ].…”

“…The tin (IV) phosphate SnP belongs to the family of phosphates that are typical cation exchangers [ 1 , 2 , 7 , 8 , 9 , 10 , 11 , 12 , 13 ]. Indeed, tin phosphate with various P/Sn ratios has attracted attention for a long time as a material for the sorption and separation of cations [ 7 , 8 , 9 , 11 ], including for cation removal from nuclear waste solutions [ 1 , 5 , 12 , 13 , 14 ]. Recent studies have confirmed that the SnP of composition Sn(HPO 4 ) 2 nH 2 O is a promising potential ion exchanger [ 5 , 15 , 16 , 17 , 18 , 19 , 20 ].…”

“…The tin (IV) phosphate SnP belongs to the family of phosphates that are typical cation exchangers [1,2,[7][8][9][10][11][12][13]. Indeed, tin phosphate with various P/Sn ratios has attracted attention for a long time as a material for the sorption and separation of cations [7][8][9]11], including for cation removal from nuclear waste solutions [1,5,[12][13][14].…”