Mesoporous inorganic oxide spheres and method of making same

摘要

A method of preparing mesoporous inorganic oxide spherical particles includes providing a reaction mixture capable of producing mesoporous inorganic oxide spheres; heating the reaction mixture to produce mesostructured inorganic oxide particles and removing organic material from the mesostructured inorganic oxide particles to form the mesoporous inorganic oxide spherical particles. In one embodiment a reaction mixture includes a proton donor, a source of inorganic oxide, and a source of fluoride. In another embodiment a reaction mixture includes a proton donor, a source of inorganic oxide, and an alcohol. Mesoporous inorganic oxide spheres produced by the method of the present invention are also provided.

主权项

1. A method of preparing mesoporous silicon oxide spherical particles, the method comprising:
providing a reaction mixture that includes:
a proton donor in an amount of about 1.39 mol % to about 1.76 mol %;a source of silicon oxide in an amount of about 0.017 mol % to about 1.6 mol %;a surfactant in an amount of about 0.01 mol % to about the limit of solubility;an alcohol in an amount of about 1.9 mol % to about 20 mol %;a source of fluoride in an amount of about 0.019 mol % to about 0.2 mol %; andwater; mixing the reaction mixture sufficiently to form a precipitate in the reaction mixture; heating the reaction mixture containing the precipitate at a temperature in a range from about 50° C. to about 230° C. for not more than 120 minutes to produce mesostructured silicon oxide particles; and removing organic material from said mesostructured silicon oxide particles to form the mesoporous silicon oxide spherical particles having a pore volume of greater than about 0.65 cm3/g and being at least about 90% spherical.