Formation of catalytic regions within porous structures using supercritical phase processing
AssigneeSDC Materials, Inc.
InventorsRob Kevwitch, Maximilian A. Biberger
Life of this patent
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Abstract
A method of forming a catalytic region on a porous structure having an exterior surface and a plurality of pores, the method comprising: forming a supercritical dispersion, wherein the supercritical dispersion comprises a plurality of particles dispersed in a supercritical fluid; exposing the porous structure to the supercritical dispersion; and depositing the plurality of particles from the supercritical dispersion onto the porous structure, wherein each one of the deposited plurality of particles is catalytic, thereby forming one or more catalytic regions on the porous structure. The method is particularly well suited for creating catalytic regions within pre-formed microporous structures.
Claims25
A method of forming a catalytic region on a pre-formed porous structure having an exterior surface and a plurality of pores, the method comprising:
- forming a supercritical dispersion, wherein the supercritical dispersion comprises a plurality of particles dispersed in a supercritical fluid;
- exposing the pre-formed porous structure to the supercritical dispersion;
- and
- depositing the plurality of particles from the supercritical dispersion onto the porous structure, wherein each one of the deposited plurality of particles is catalytic, thereby forming one or more catalytic regions on the porous structure.
A method of forming a catalytic region on a pre-formed microporous structure having an exterior surface and a plurality of pores, the method comprising:
- dispersing a plurality of particles within a carrier fluid, thereby forming a carrier mixture;
- mixing a supercritical fluid with the carrier mixture, thereby forming a heterogeneous mixture;
- removing the carrier fluid from the heterogeneous mixture, thereby forming a supercritical dispersion, wherein the supercritical dispersion comprises the plurality of particles dispersed in the supercritical fluid;
- exposing the pre-formed microporous structure to the supercritical dispersion;
- and
- removing the supercritical fluid from the supercritical dispersion while the supercritical dispersion is in contact with the porous structure, thereby depositing the plurality of particles from the supercritical dispersion onto the microporous structure, wherein each one of the deposited plurality of particles is catalytic, and the deposition of the particles forms one or more catalytic regions on the microporous structure.
Dependencies are inferred from the claim text.