| abstract |
An object of the present invention is to provide a method for producing an alkaline metal oxide sol having a uniform particle size distribution.n n n The present invention is a method for producing a metal oxide sol comprising a step of heating a metal compound to 60-110 ° C. and a hydrothermal treatment at 110-250 ° C. in an aqueous medium containing carbonate of quaternary ammonium. The quaternary carbonate of the quaternary ammonium is (NR 4 ) 2 CO 3 , NR 4 HCO 3 (wherein R represents a hydrocarbon group) or a mixture thereof. The metal compound is one or two or more metal compounds selected from the group consisting of compounds based on metals having divalent, trivalent and tetravalent valences.n n n n Alkaline metal oxides, sol, quaternary ammonium, carbonate |