| 摘要 |
Dry processes for coating titania particles, as well as the coated titania particles produced thereby, are provided. In the subject processes, a moving bed of titania particles is contacted with a gaseous first reactant under conditions sufficient for the first reactant to adsorb on the surface of the particles. Next, the particles having the first reactant adsorbed to their surface are contacted with a gaseous second reactant under conditions such that the second reactant reacts with the surface adsorbed first reactant to produce a product on the surface and in turn yield titania particles coated with a compact layer of the resultant product. The resultant coated titania particles find use in a variety of applications, including as pigments in paints and cosmetics.
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