Method for producing tritium pyrophosphate and method for producing tritium pyrophosphate carbon composite

摘要

The following general formula (1): Li _x Co _1-y M _y P ₂ O ₇ (1) (in the formula, 1.7≤x≤2.2, 0≤y≤0.5, M is Mg, Zn, Cu, Fe, Cr , Mn, Ni, Al, B, Na, K, F, Cl, Br, I, Ca, Sr, Ba, Ti, Zr, Hf, Nb, Ta, Y, Yb, Si, S, Mo, W, V , Bi, Te, Pb, Ag, Cd, In, Sn, Sb, Ga, Ge, La, Ce, Nd, Sm, Eu, Tb, Dy and Ho. A method for producing tritium pyrophosphate represented by ), wherein an organic acid and cobalt hydroxide are added to an aqueous medium, followed by addition of phosphoric acid and lithium hydroxide to prepare an aqueous raw material slurry (1), and the aqueous raw material A second step of wet grinding the slurry (1) with a media mill to obtain a slurry (2) containing the raw pulverized product, and spray drying the slurry (2) containing the raw pulverized product, A method for producing tritium pyrophosphate, comprising: a third step of obtaining a reaction precursor; and a fourth step of firing the reaction precursor at 600°C or higher. According to the present invention, it is possible to provide a method capable of obtaining single-phase tritium pyrophosphate by X-ray diffraction as an industrially advantageous method.