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    • 6. 发明申请
    • PROCESS FOR THE PRODUCTION OF DOPED METAL OXIDE PARTICLES
    • 用于生产掺杂的金属氧化物颗粒的方法
    • WO2007054412A1
    • 2007-05-18
    • PCT/EP2006/067232
    • 2006-10-10
    • DEGUSSA GMBHSCHUMACHER, KaiGOLCHERT, RainerROTH, HelmutALFF, HaraldROCHNIA, Andree-Matthias
    • SCHUMACHER, KaiGOLCHERT, RainerROTH, HelmutALFF, HaraldROCHNIA, Andree-Matthias
    • C01B13/14C09C3/06C09C1/30C23C18/08C23C18/12C09C1/00
    • C01B13/145C01G23/04C01P2002/52C01P2006/12C09C1/0081C09C1/3045C09C3/06C23C8/10
    • Process for the production of doped metal oxide particles, wherein the doping component is present on the surface in the form of domains, wherein in a first reaction zone, an oxidizable and/or - hydrolysable metal compound as dopant together with an atomization gas is atomised into a flow of metal oxide particles in a carrier gas, wherein the mass flow of the metal oxide particles und - the mass flow of the dopant are selected such that the doped metal oxide particles contain 10 ppm to 10 wt.% of the doping component, where the quantity of dopant to be introduced is calculated as the corresponding oxide, and wherein the temperature in the first reaction zone is - selected such that it is below the boiling temperature of the dopant under the prevailing reaction conditions, and then, in a second reaction zone, the flow from the first - reaction zone and optionally at least as much oxygen and/or steam are - introduced that the quantity of oxygen and/or steam at least suffices completely to convert the dopant, wherein the temperature is from 300 to 2000°C, - preferably 500 to 1000°C, and the reaction mixture is then cooled or allowed to cool and the doped metal oxide particles are separated from the gaseous substances.
    • 用于生产掺杂金属氧化物颗粒的方法,其中所述掺杂组分以畴形式存在于所述表面上,其中在第一反应区中,作为掺杂剂的可氧化和/或可水解的金属化合物与雾化气体一起雾化 进入载气中的金属氧化物颗粒的流动,其中选择金属氧化物颗粒的质量流和掺杂剂的质量流,使得掺杂的金属氧化物颗粒含有10ppm至10wt%的掺杂组分 ,其中要引入的掺杂剂的量被计算为相应的氧化物,并且其中第一反应区中的温度被选择为使得其在主要反应条件下低于掺杂剂的沸点温度,然后在 第二反应区,来自第一反应区和任选地至少相同的氧和/或蒸汽的流量被引入,使得氧气和/或蒸汽的量至少足以完全为t o转化掺杂剂,其中温度为300至2000℃,优选500至1000℃,然后将反应混合物冷却或冷却,并将掺杂的金属氧化物颗粒与气态物质分离。