Patent application number | Description | Published |
20090087496 | PROCESS FOR PREPARING MIXED METAL OXIDE POWDERS - Process for preparing a mixed metal oxide powder, in which oxidizable starting materials are evaporated and oxidized, the reaction mixture is cooled after the reaction and the pulverulent solids are removed from gaseous substances, wherein as starting materials, at least one pulverulent metal and at least one metal compound, the metal and the metal component of the metal compound being different and the proportion of metal being at least 80% by weight based on the sum of metal and metal component from metal compound, together with one or more combustion gases, are fed to an evaporation zone of a reactor, where metal and metal compound are evaporated completely under nonoxidizing conditions, subsequently, the mixture flowing out of the evaporation zone is reacted in the oxidation zone of this reactor with a stream of a supplied oxygen-containing gas whose oxygen content is at least sufficient to oxidize the starting materials and combustion gases completely. | 04-02-2009 |
20090092531 | YTTRIUM-ZIRCONIUM MIXED OXIDE POWDER - Nano-scale yttrium-zirconium mixed oxide powder in the form of aggregated primary particles having the following physico-chemical parameters:—BET surface area: from 40 to 100 m | 04-09-2009 |
20090214866 | PROCESS FOR THE PRODUCTION OF METAL OXIDE POWDERS - Process for the production of a metal oxide powder having a BET surface area of at least 20 m | 08-27-2009 |
20100003179 | PROCESS FOR PREPARING METAL OXIDE POWDERS - Process for preparing a metal oxide powder, in which starting materials are evaporated and oxidized, wherein a metal melt in the form of droplets and one or more combustion gases are fed to the evaporation zone of a reactor, where the metal melt is evaporated completely under nonoxidizing conditions, subsequently, the mixture flowing out of the evaporation zone is reacted in the oxidation zone of this reactor with a stream of a supplied oxygen-containing gas whose oxygen content is at least sufficient to oxidize the metal and the combustion gases completely. | 01-07-2010 |
20100008872 | SILICA COATED ZINC OXIDE PARTICLES OBTAINABLE BY A FLAME PYROLYSIS PROCESS - Zinc silicon oxide particles with a core-shell structure which have a Zn/Si ratio of from 2 to 75, in atom %/atom %, whose fraction of Zn, Si and O is at least 99% by weight, based on the zinc silicon oxide particles, which have a BET surface area of from 10 to 60 m | 01-14-2010 |
20110207869 | IRON-SILICON OXIDE PARTICLES WITH A CORE-SHELL STRUCTURE - Iron-silicon oxide particles with a core-shell structure, which have a) a BET-surface area of 10 to 80 m | 08-25-2011 |
20130040202 | MIXED OXIDE POWDER CONTAINING THE ELEMENTS LITHIUM, MANGANESE, NICKEL AND COBALT AND METHOD FOR PRODUCING SAME - Mixed oxide which has the composition Li | 02-14-2013 |
20130045158 | METHOD FOR PRODUCING MIXED OXIDES COMPRISING LITHIUM - Process for preparing a lithium-containing mixed oxide powder, wherein
| 02-21-2013 |
20130303658 | IRON-SILICON OXIDE PARTICLES HAVING AN IMPROVED HEATING RATE IN AN ALTERNATING MAGNETIC AND ELECTROMAGNETIC FIELD - Iron-silicon oxide particles with a core and an outer shell have improved heating rates in a magnetic field. The core contains maghemite, magnetite, and haematite. The outer shell is essentially or exclusively silicon dioxide. The crystallite diameter of the haematite determined by X-ray diffraction is greater than 120 nm. A ratio of the brightness of the Debye-Scherrer diffraction ring by electron diffraction at a lattice plane spacing of 0.20+/−0.02 nm, comprising maghemite and magnetite, to the brightness of the Debye-Scherrer diffraction ring by electron diffraction at a lattice plane spacing of 0.25+/−0.02 nm, comprising maghemite, magnetite and haematite, is no more than 0.2. | 11-14-2013 |