26-03-2020 дата публикации
Номер: US20200095127A1
A method for the manufacture of crystal water-free iron(II) orthophosphate of the general formula Fe(PO)or crystal water-free iron(II) metal orthophosphate, iron(II) metal pyrophosphate or iron(II) metal metaphosphate of the general formula FeMet(PO), where a is a number from 1 to 5, b is a number from >0 to 5, c is a number from 2.5 to 5, d is a number from 0.5 to 3 and Met represents one or more metals selected from the group consisting of K, Rb, Cs, Mg, Ca, Sr, Ba, the transition metals (d block), in particular Sc, Y, La, Ti, Zr, Hf, Nb, Ta, Cr, Mo, W, Mn, Cu, Zn and the metals and semimetals of the third, fourth and fifth main groups, in particular B, Al, Ga, In, Si, Sn, Sb, Bi and the lanthanoids. 1. A method for the manufacture of{'sub': 3', '4', '2, 'crystal water-free iron(II) orthophosphate of the general formula Fe(PO)or'}{'sub': a', 'b', 'c', 'd, 'crystal water-free iron(II) metal orthophosphate, iron(II) metal pyrophosphate or iron(II) metal metaphosphate of the general formula FeMet(PO), where a is a number from 1 to 5, b is a number from >0 to 5, c is a number from 2.5 to 5, d is a number from 0.5 to 3 and Met represents one or more metals selected from the group consisting of K, Rb, Cs, Mg, Ca, Sr, Ba, the transition metals (d block), the metals and semimetals of the third, fourth and fifth main groups, and the lanthanoids or combinations of the above mentioned phosphates with the stagesa) manufacture of a mixture containing:i) iron compounds (A) selected from Fe(III) compounds, Fe(III)/Fe(II) compounds and mixtures of these in a percentage of 20% to 90% by weight of the mixture selected from the group consisting of oxides, hydroxides, oxide hydroxides, carbonates, carboxylates such as oxalates, formates, acetates, citrates, lactates, orthophosphates, phosphonates, metaphosphates, pyrophosphates, sulphates and mixtures of those mentioned above,{'sub': 3', '3', '2', '3', '3', '2', '2', '4', '4', '2', '6', '4', '2', '5', '4', '2', '4, 'ii) reduction ...
Подробнее