Catalyst material and method of making
AssigneeBattelle Memorial Institute
InventorsDean W. Matson, John L. Fulton, John C. Linehan, Roger M. Bean, Thomas D. Brewer, Todd A. Werpy, John G. Darab
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Abstract
The material of the present invention is a mixture of catalytically active material and carrier materials, which may be catalytically active themselves. Hence, the material of the present invention provides a catalyst particle that has catalytically active material throughout its bulk volume as well as on its surface. The presence of the catalytically active material throughout the bulk volume is achieved by chemical combination of catalytically active materials with carrier materials prior to or simultaneously with crystallite formation.
Claims35
A method of making nanometer-sized particles, comprising the steps of:
- (a) making a solution of a soluble precursor in a solvent wherein substantially no particles are formed or precipitated as a result of making said solution, and flowing said solution through a reaction vessel in a continuous manner;
- (b) pressurizing and heating said flowing solution in said reaction vessel, said heating initiating chemical reactions thereby nucleating and forming substantially insoluble solid particles, while maintaining said flowing solution in a substantially liquid phase;
- and
- (c) quenching said heated flowing solution and arresting growth of said solid particles.
A method of making nanometer-sized particles, comprising the steps of:
- (a) making a solution of a soluble precursor in a liquid solvent, and flowing said solution through a reaction vessel in a continuous manner;
- (b) pressurizing and heating said flowing solution in said reaction vessel/while maintaining a substantially liquid phase, said heating initiating chemical reactions and nucleating and forming substantially insoluble solid particles;
- and
- (c) quenching said heated flowing solution and arresting growth of said solid particles.
A method of making nanometer-sized particles, comprising the steps of:
- (a) making a solution of a soluble precursor in a solvent of supercritical carbon dioxide, and flowing said solution through a reaction vessel in a continuous manner;
- (b) pressurizing and heating said flowing solution in said reaction vessel, said heating initiating chemical reactions and nucleating and forming substantially insoluble solid particles;
- and
- (c) quenching said heated flowing solution and arresting growth of said solid particles.
A method of making nanometer-sized particles, comprising the steps of:
- (a) making a solution of a soluble precursor in a solvent, said precursor a metal yielding metal carbonyl, and flowing said solution through a reaction vessel in a continuous manner;
- (b) pressurizing and heating said flowing solution in said reaction vessel, said heating initiating thermal breakdown of said precursor and nucleating and forming substantially insoluble solid particles;
- and
- (c) quenching said heated flowing solution and arresting growth of said solid particles.
A method of making nanometer-sized particles, comprising the steps of:
- (a) making a solution of a soluble precursor in a solvent wherein the solvent is substantially a liquid, and flowing said solution through a reaction vessel in a continuous manner;
- (b) pressurizing and heating said flowing solution and in said reaction vessel, maintaining said solution substantially in the liquid phase, said heating initiating chemical reactions thereby nucleating and forming substantially insoluble solid particles;
- and
- (c) quenching said heated flowing solution and arresting growth of said solid particles.
Dependencies are inferred from the claim text.