| abstract |
A method for producing a porous composite oxide comprises the steps of: preparing a mixture of the following substances: a) a precursor component suitable for the production of the composite oxide; or b) of the composite oxide particles One or more precursor components suitable for manufacture, and one or more metal oxide particles; and c) a particulate carbon-containing pore-forming material selected to provide a pore size of about 7 nm to 250 nm; and Treating the mixture for: i) forming a porous composite oxide (in the porous composite oxide, two or more precursor components from (a) above, or ( one or more precursor components from b) and one or more metals in the metal oxide particles are incorporated into the phase of the composite metal oxide, wherein the composite metal oxide is about 1 nm to 150 nm Have particle size That); ii) under conditions that substantially maintain the porous structure and composition of the complex oxide, to remove the pore-forming material. The method can also be used for the production of non-refractory metal oxides. |