Chemische Fabrik Budenheim Kg

Andreas Jazdanian

Gunnar Buehler

Christian Graf

Michael Rapphahn

Kilian Schwarz

Killian Schwarz

A process for producing a phosphate by: introducing oxidic metal(II)-, metal(III)- metal(IV) or compounds with mixed oxide stages selected from hydroxides, oxides, oxide-hydroxides, oxide-hydrates, carbonates and hydroxide carbonates, of at least one of the metals Mn, Fe, Co and Ni with the elemental forms or alloys of at least one of the metals Mn, Fe, Co and/or Ni into an aqueous medium containing phosphoric acid, and reacting the oxidic metal compounds with elemental forms or alloys of the metals to obtain divalent metal ions, removing solid substances, producing an alkali metal phosphate receiver solution with a pH-value of 5 to 8 and metering the aqueous solution into the receiver solution and at the same time metering a basic aqueous alkali hydroxide solution that the pH-value of the resulting reaction mixture is kept in the region of 5 to 8 to precipitate the desired phosphate.

Metal phosphates and process for the preparation thereof

A method for producing an iron(III)orthophosphate-carbon composite which contains iron(III)orthophosphate of the general formula FePO&#xd7;nHO (n&#x2266;2.5), a carbon source being dispersed in a phosphoric aqueous Feion-containing solution and orthophosphate-carbon composite being precipitated and removed from the aqueous solution when an oxidant is added to the dispersion.

Iron (III) orthophosphate-carbon composite

A manganese(Mn)-bearing monometal phosphate of the type Mn(PO).3HO or mixed-metal phosphate of the type (Mn, Met)(PO).3HO, wherein x+y=1 and Met represents one or more metals selected from Fe, Co, Ni, Sc, Ti, V, Cr, Cu, Zn, Be, Mg, Ca, Sr, Ba, Al, Zr, Hf, Re, Ru, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, characterized in that in the X-ray powder diffraction diagram the phosphate has peaks at 10.96&#xb1;0.05, 12.78&#xb1;0.17, 14.96&#xb1;0.13, 17.34&#xb1;0.15, 18.98&#xb1;0.18, 21.75&#xb1;0.21, 22.07&#xb1;0.11, 22.97&#xb1;0.10, 25.93&#xb1;0.25, 26.95&#xb1;0.30, 27.56&#xb1;0.10, 29.19&#xb1;0.12, 29.84&#xb1;0.21, 30.27&#xb1;0.12, 34.86&#xb1;0.21, 35.00&#xb1;0.20, 35.33&#xb1;0.30, 35.58&#xb1;0.10, 35.73&#xb1;0.12, 42.79&#xb1;0.45, 43.37&#xb1;0.45, 44.70&#xb1;0.15 and 44.93&#xb1;0.20 degrees two-theta, based on CuK-radiation.

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Gross-Umstadt, Germany

Andreas Jazdanian