Abstract

A mathematical and experimental modeling of the process of synthesis under nonequilibrium conditions of a fine powder of titanium dioxide anatase crystalline modification with a combination of reaction zones and counter hardening has been carried out. The formation of ultrafine particles occurs in regions with large values of the convective derivative of temperature (~10⁵ K/s). The mass-average particle size was 10–70 nm in calculations and 32–45 nm in experiments. The anatase content of the powder in calculations was 70–90% and in experiments ~83%. This method allows control over the phase composition and particle size of the synthesized titanium dioxide powder used as photocatalysts, in particular, when treating wastewater from organic waste and air from harmful impurities.

中文翻译：

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流动等离子体化学反应器中合成的二氧化钛亚微米颗粒的尺寸和相组成的模型控制

摘要

数学和实验模型的非平衡条件下合成的锐钛矿型钛白粉细粉晶体修饰与反应区和反硬化相结合的合成过程。超细颗粒的形成发生在温度对流导数值较大（约10 ⁵ K / s）的区域。计算中的质均粒径为10-70 nm，实验中为32-45 nm。在计算中粉末的锐钛矿含量为70-90％，在实验中约为83％。该方法可以控制用作光催化剂的合成二氧化钛粉末的相组成和粒度，特别是在处理有机废物产生的废水和有害杂质产生的空气时。