Method for producing porous bodies with enhanced properties
AssigneeScientific Design Company, Inc.
InventorsWojciech L. Suchanek, Matthew Julian
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Abstract
A precursor mixture for producing a porous body, wherein the precursor mixture comprises: (i) milled alpha alumina powder having a particle size of 0.1 to 6 microns, (ii) boehmite powder that functions as a binder of the alpha alumina powders, and (iii) burnout materials having a particle sizes of 1-10 microns. In some embodiments, an unmilled alpha alumina powder having a particle size of 10 to 100 microns is also included in said precursor mixture. Also described herein is a method for producing a porous body in which the above-described precursor mixture is formed to a given shape, and subjected to a heat treatment step in which the formed shape is sintered to produce the porous body.
Claims24
A method for producing a porous body, the method comprising:
- providing a precursor mixture devoid of a silicon-containing compound and comprising (i) milled alpha alumina powder having a particle size of 0.1 to 6 microns, (ii) boehmite powder that functions as a binder of the alpha alumina powder, and (iii) burnout material having a particle size of 1-10 microns;
- forming a predetermined shape;
- and
- subjecting the shape to a heat treatment step in which the shape is sintered to produce the porous body.
A method for producing a porous body, the method comprising:
- providing a precursor mixture comprising (i) milled alpha alumina powder having a particle size of 0.1 to 6 microns, (ii) boehmite powder that functions as a binder of the alpha alumina powder, and (iii) burnout material having a particle size of 1-10 microns;
- forming a predetermined shape;
- and
- subjecting the shape to a heat treatment step in which the shape is sintered to produce the porous body, wherein unmilled alpha alumina powder is excluded from the precursor mixture.
A method for producing a porous body, the method comprising:
- providing a precursor mixture comprising (i) milled alpha alumina powder having a particle size of 0.1 to 6 microns, (ii) boehmite powder that functions as a binder of the alpha alumina powder, and (iii) burnout material having a particle size of 1-10 microns;
- forming a predetermined shape;
- and
- subjecting the shape to a heat treatment step in which the shape is sintered to produce the porous body, wherein the porous body possesses at least one of a water absorption of at least 30%, a crush strength of at least 40 N, and a BET surface area of at least 0.3 m2/g, and a pore architecture that provides at least one of a tortuosity of 7 or less, a constriction of 4 or less, and a permeability of 30 mdarcys or greater.
Dependencies are inferred from the claim text.