Mixed metal oxide powder, especially antimony-tin mixed oxide powder, and preparation thereof
Номер патента: EP2467331A1
Опубликовано: 27-06-2012
Автор(ы): Armin Wiegand, Jürgen Meyer, Peter Kress, Stipan Katusic, Sven Hill
Принадлежит: EVONIK DEGUSSA GmbH
Опубликовано: 27-06-2012
Автор(ы): Armin Wiegand, Jürgen Meyer, Peter Kress, Stipan Katusic, Sven Hill
Принадлежит: EVONIK DEGUSSA GmbH
Реферат: Process for preparing a mixed metal oxide powder, comprising the introducing of an aerosol into a flame, the cooling of the hot gases and of the solid product and the removing of the mixed metal oxide powder, wherein the starting compounds present in the solution are metal carboxylates of C 1 -C 5 -carboxylic acids, the solution comprises one or more C 1 -C 5 -carboxylic anhydrides and the sum of the proportions of metal carboxylates in the solution, based in each case on the metal, is at least 20% by weight. Antimony-tin mixed oxide powder which - has an Sn/Sb weight ratio of 90:10 to 98:2 and a BET surface area of 40 to 90 m 2 /g, is present in the form of aggregated primary particles which have a very substantially homogeneous distribution of antimony and tin at the molecular level, and has - a d 50 of less than 150 nm, a d 90 of less than 200 nm, a charge carrier density NL of at least 2.2 x 10 18 cm -3 and a minimum specific resistivity of less than 200 ohm x cm. Dispersion thereof.
Mixed metal oxide powder, especially antimony-tin mixed oxide powder, and preparation thereof
Номер патента: WO2010145897A1. Автор: Jürgen Meyer,Stipan Katusic,Peter Kress,Armin Wiegand,Sven Hill. Владелец: EVONIK DEGUSSA GmbH. Дата публикации: 2010-12-23.