Nanoscale pyrogenic oxides

A process for the production of nanoscale, pyrogenically produced oxides and/or mixed oxides of metals and/or metalloids having a BET surface area of between 1 m2/g and 600 m2/g and a total chloride content of less than 0.05 wt. %, wherein organometallic and/or organometalloid substances, optionally dissolved in a solvent, are converted into the oxides, optionally in a flame, at temperatures of above 200° C.

A use of the nanoscale, pyrogenically produced oxides and/or mixed oxides of metals and/or metalloids as a filler, as a support material, as a catalytically active substance, as a starting material for the production of dispersions, as a polishing material for polishing metal or silicon wafers in the electronics industry (CMP), as a basic substance in ceramics, in the cosmetics industry, as an additive in the silicone and rubber industry, for establishing the rheological properties of liquid systems, for providing thermal stabilisation, in the coatings industry as a thermal insulating material, as an antiblocking agent.

A pyrogenically produced monoclinic zirconium oxide a chloride content of less than 0.05 wt. %.

A pyrogenically produced amorphous aluminium oxide.

A pyrogenically produced alpha aluminium oxide.

A pyrogenically produced titanium oxide having a rutile structure.