Chemische Fabrik Budenheim Kg

Kilian Schwarz

Gunnar Buehler

Christian Graf

Michael Rapphahn

Andreas Jazdanian

Albertus Wissing

Gunnar Bühler

Gunnar Buhler

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 nutrient composition for biological systems, such as humans, animals, plants or microorganisms includes at least one monometallic or mixed-metallic phosphate of the (M1 M2 M3 . . . Mx)(PO).aHO type where 0&#x2266;a&#x2266;9, where (M1, M2, M3 . . . Mx) represent the one metal of the monometallic phosphate or the two or more metals of the mixed-metallic phosphate and are selected from Na, K, Mg, Ca, Cr, Mo, W, Mn, Fe, Co, Ni, Cu, Zn and B, with the proviso that at least one of the metals in the phosphate is selected from Mn, Fe, Co and Ni.

Nutrient composition for biological systems

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.

Metal phosphate containing manganese and method for its production

A process for the production of iron (III) orthophosphate of the general formula FePO&#xd7;nHO (n&#x2266;2.5) comprising: a) producing an aqueous solution containing Feions by introducing, iron (II), iron (III) or mixed iron (II, III) compounds selected from hydroxides, oxides, oxide hydroxides, oxide hydrates, carbonates and hydroxide carbonates, together with elementary iron, into a phosphoric acid-bearing aqueous medium, to dissolve Feions and to react Fewith elementary Fe in a comproportionation reaction to give Fe; b) separating solids from the phosphoric-acid aqueous Fesolution, and c) adding an oxidation agent to the phosphoric-acid aqueous Fesolution to oxidize iron (II) in the solution to precipitate iron (III) orthophosphate of the general formula FePO&#xd7;nHO. The invention includes the product of the process and its use to make LiFePOfor batteries.

Growing community of inventors

Mainz, Germany

Kilian Schwarz