Synthesis of three-dimensional compounds from alkali-metal ion-exchanged γ-titanium phosphate
作者： Miguel A. Salvadó , Pilar Pertierra , Santiago García-Granda , Marta Suárez , María Luz Rodríguez
DOI: 10.1039/JM9960600415
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摘要: Treatment of γ-titanium phosphate with 1 mol dm–3 solutions MCl (M = Na, K, Cs) results in layered crystalline phases compositions at 50 °C of: γ-Ti(Na0.5H1.5PO4)(PO4)·H2O, γ-Ti(KHPO4)(PO4)·½H2O and γ-Ti(Cs0.5H1.5PO4)(PO4)·½H2O. Heating 900 gives rise to three-dimensional compounds. The composition the new materials depends on type alkali-metal present solid. K phase originates KTi2(PO4)3, Cs α-CsTi3P5O19, Na produces mixtures NaTi2(PO4)3 TiP2O7. Moreover, amorphous phosphates which are soluble acidic media formed. Samples (A), KTi2(PO4)3(B) α-CsTi3P5O19(C) have been studied using X-ray powder diffraction. lattice parameters A [a= 5.063(3)A, b= 6.297(1)A, c= 11.502(5)A, β= 109.30(4)°], B 8.3569(2)A, 23.0725(3)A] C 6.320(1)A, 14.122(2)A, 9.333(2)A, 105.82(2)°] also calculated.
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