Patent ID: 8920924
Filing Date: 2014-12-30
Classification: C01D,C01G,C01P,C04B,H01L,Y10T

Abstract:
1. A method of producing a particulate sodium-potassium niobate represented by the formula (1): comprising: (a) mixing a niobium-containing solution with an alkaline solution having a concentration of 0.1 to 30 mol/L, to prepare a suspension; (b) allowing the suspension to stand still for 12 to 48 hours at a temperature of between 80° C. and 150° C.; (c) performing a solvothermal reaction of the suspension at a temperature of between 150° C. and 300° C. for 1 to 12 hours; and (d) separating the particulate sodium-potassium niobate from a reaction mixture, wherein the alkaline solution contains Na wherein x is in a range of 0.05≦x≦0.8.