Mesoporous nanocomposite
AssigneeImam Mohammad Ibn Saud Islamic University
InventorEhab Abdelhamed Abdelrahman Ahmed
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Abstract
A particulate mesoporous nanocomposite having the general formula ZrO2·Mg6MnO8, wherein the nanocomposite comprises a monoclinic zirconium dioxide (ZrO2) crystalline phase, a tetragonal ZrO2 crystalline phase, and a cubic magnesium manganese oxide (Mg6MnO8) crystalline phase. The nanocomposite may be obtained by a method comprising: forming an aqueous mixture by adding an aqueous solution of a chelating agent into an aqueous solution of a magnesium salt, a manganese salt and a zirconium salt; adding a polyol in the aqueous mixture to form a gel; heating the gel under stirring at a temperature of about 200° C. to about 400° C. for a sufficient duration to form a dry powder; and, calcining the dry powder at a temperature of about 700° C. to about 1000° C. to form the nanocomposite material.
Claims19
A particulate mesoporous nanocomposite having the general formula ZrO2·Mg6MnO8 and comprising, as determined by X-ray diffraction, a monoclinic ZrO2 crystalline phase, a tetragonal ZrO2 crystalline phase and a cubic Mg6MnO8 crystalline phase,
- wherein the nanocomposite comprises, based on the weight of the nanocomposite;
- from about 70 to about 90 wt. % of ZrO2;
- and,
- from about 10 to about 30 wt. % of Mg6MnO8.
A particulate mesoporous nanocomposite having the general formula ZrO2·Mg6MnO8 and comprising, as determined by X-ray diffraction, a monoclinic ZrO2 crystalline phase, a tetragonal ZrO2 crystalline phase and a cubic Mg6MnO8 crystalline phase,
- wherein the median crystallite size of the nanocomposite is from about 60 to about 70 nm, as determined by X-ray diffraction.
Dependencies are inferred from the claim text.