Patent ID: 9145306
Filing Date: 2015-09-29
Classification: B82Y,C01B,C01F,C01P,Y02P

Abstract:
1. A method for preparing metal compound nanoparticles, comprising: adding a metal salt solution comprising at least one metal precursor in an organic solvent into a reactor, wherein the metal precursor comprises at least one chemical substance selected from the group consisting of a metal fluoride, a metal hydroxide, an inorganic acid metal salt, an organic acid metal salt, a metal hydride, and a metal complex, and wherein the metal of the metal precursor comprises one or more elements selected from the group consisting of Rh, Sb, Sc, Sr, V, Y, Ce, W, Fe, Zn, Cd, Mn, Ca, Ba, Cs, Cr, In, Se, Te, Ga, Gd, Ge, Dv, Pr, Sm, Ho, Lu, Tb, Eu, Nd, La, Hf, Er, and Yb; injecting CO cooling the reaction mixture; and performing supercritical drying of the cooled reaction mixture to isolate the metal compound nanoparticles, wherein heating and pressuring the fluid mixture is performed at about 50° C. at about 7 MPa and maintaining the fluid mixture is performed at about 150° C. at about 11 MPa for about ½ hours.