Herstellung von Metalloxid-Nanopartikeln aus Alkali-Metallaten in organischen Lösungsmitteln

The present invention relates to a method for producing metal or metalloid oxide nano particles of the general formula (I), wherein M\ a, and b have the following meanings: M1 metal or metalloid selected from the groups 1 to 15 of the periodic table of elements (IUPAC) of the lanthanides, actinides, and mixtures thereof, a 1 - 4, and b 1 - 4, wherein a and b are selected
based on the oxidation number of M1 such that the compound of the general formula (I) has a neutral charge, comprising the following steps: (A) preparing a solution or dispersion of at least one compound of the general formula (II), wherein M1 has the above meaning, and M2, x, y, z, and n have the following meanings: M2 alkali or alkaline earth metal or mixtures 2 thereof, x 0.5 - 6.30, y 0.5 - 6, z 0.5 - 4, and n O - 12, wherein x, y, and z are selected based on the oxidation numbers of M1 and M2 such that the at least one compound of the of the general formula (II) present in the reaction mixture from step (A) with at least one acidic ion exchanger by adding the at least one ion exchanger to the reaction mixture, in order to obtain the metal or metalloid nanoparticles of the general formula (I), and (C) separating the at least on acidic ion exchanger from the reaction mixture.