Synthesis and characterization of uranium (IV) phosphate-hydrogenphosphate hydrate and cerium (IV) phosphate-hydrogenphosphate hydrate

Improvement of the preparation of sintered pellets of thorium phosphate-diphosphate and associated solid solutions from crystallized precursors

“…Whatever the substitution rate x considered, the pattern recorded was found to be in good agreement with that of TPHPH [15] and UPHPH [19]. The powders appeared wellcrystallized and no additional diffraction line was observed, confirming that the samples were single phase.…”

“…The chemical composition and the homogeneity of several TUPHPH solid solutions were examined by the means of EPMA experiments ( Table 2) then compared to that obtained for the TPHPH [15] and UPHPH [19] end-members. For all the samples analyzed, the elementary atomic percents and mole ratios appear consistent with that determined on the basis of the expected formula.…”

Morphology Control of Cerium Phosphates for Uv-Shielding Application

“…Plate-like microparticles of hydrated cerium phosphate, Ce 2 (PO 4 ) 2 HPO 4 . H 2 O, which possesses two dimensional layered structure (FIGURE 9) 7,8) and smaller band gap energy than layered titanate showing better absorption ability of UV-A (FIGURE 10) 9,10) can be easily prepared by the hydrothermal reactions of Ce(SO 4 ) 2 in H 3 PO 4 aqueous solutions (FIGURE 11) 9,10) . It is also expected that Ce 2 (PO 4 ) 2 HPO 4 .…”

Cerous phosphate gels: Synthesis, thermal decomposition and hydrothermal crystallization paths

“…They also solved the structure of this compound: it has a monoclinic system and possesses a layered structure (space group С2/с; unit cell parameters а = 21.0142(3) Å, b = 6.55082(7) Å, с = 6.94382(6) Å, β = 91.983(1)°, V = 955.32(2) Å 3 ). Note that a substance of the same composition was also synthesized by Brandel et al [21]. In turn, Yang et al [22] hydrothermally synthesized a crystalline Ce +4 hydroorthophosphate of the Ce(H 2 O)(PO 4 ) 3/2 (H 3 O) 1/2 (H 2 O) 1/2 composition (monoclinic system also, unit cell parameters а = 15.706(2) Å, b = 9.6261(9) Å, с = 10.1632(4) Å, β = 121.623(7)°).…”