Method of making oxide particles

Details Method of making oxide particles Method of making oxide particles

2006-10-10

2006-10-10

Vanoy, Timothy C. (Department: 1754)

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

C423S179000, C423S155000, C423S069000, C423S062000, C423S053000, C423S099000, C423S021100, C423S111000, C423S089000, C423S641000, C423S635000, C423S608000, C423S606000, C423S594170, C423S622000, C423S624000, C423S619000, C423S618000, C423S022000, C423S023000, C423S049000, C423S087000, C423S138000, C423S604000, C423S605000, C423S617000, C423S632000, C423S594180, C423S594190, C423S263000, C423S335000, C423S277000, C977S773000, C977S775000, C977S777000, C977S811000

Reexamination Certificate

active

07118727

ABSTRACT:
The present invention provides a process for producing particles, such as oxide nanoparticles, in a substantially water-free environment. The process involves mixing at least one metal compound of the formula MX(m−n)with at least one surfactant and at least one solvent, wherein M is an electropositive element of Groups 1–15; each X is independently selected from the group consisting of O1/2, F, Cl, Br, I, OR, O2CR, NR2, and R; each R is independently a hydrocarbyl group; n is equal to ½ the oxidation state of the metal M in the product particle; and m is equal to the oxidation state of the element M. The components are typically combined to form a mixture which is thermally treated for a time period sufficient to convert the metal compound into particles of the corresponding oxide, having sizes in a range between about 0.5 nanometer and about 1000 nanometers. Examples of metal compounds employed in this process include materials such as Si(OR)4, Ti(OR)4(where R is as described above), (Zr(OiPr)2)(OAc)2, and the like. Illustrative oxide materials which can be prepared by this process include TiO2, ZrO2, SiO2, and B2O3.

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