Degussa Aktiengesellschaft

Thomas Hennig

Helmut Mangold

Klaus Deller

Stipan Katusic

Günther Michael

Thomas Scharfe

Andrea Tietze

Peer Plambeck-Fischer

Susanne Reinhart

Nanoscalar, pyrogenically produced yttrium-zirconium mixed oxide which has a BET surface area of between 1 and 600 m/g, a total chloride content of less than 0.05 wt. % and does not exhibit a conversion into the monoclinic phase during storage is produced by atomizing yttrium compounds and zirconium compounds and reacting them in a flame. The mixed oxide can be used as ceramic raw material.

Nanoscalar pyrogenically produced yttrium-zirconium mixed oxide

Pyrogenically produced aluminum oxide, in which the BET specific surface area is greater than 115 m /g and the Sears index is over 8 ml/2 g and the dibutyl phthalate absorption as a powder measured with a 16 g weighed portion is not measurable, is produced by means of flame oxidation or preferably flame hydrolysis, whereby a vaporizable aluminum compound is used as starting material. The aluminum oxide can be used as an ink-absorbing substance in inkjet media and also as a filler, as a substrate, as a catalytically active substance, as a starting material for the production of dispersions, as a polishing material (CMP applications), as a ceramic raw material, in the electronics industry, in the cosmetics industry, as an additive in the silicone and rubber industry, to adjust the rheology of liquid systems, as a heat stabilizer, in the paint industry.

Pyrogenically produced aluminum oxide

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Geinhausen, Germany

Thomas Hennig