Catalyst for high throughput enzymatic catalysis

Patent metadata

Field	Value
Publication number	US-11124790-B2
Application number	US-201816126226-A
Country	US
Kind code	B2
Filing date	Sep 10, 2018
Priority date	Feb 8, 2018
Publication date	Sep 21, 2021
Grant date	Sep 21, 2021

Abstract

A catalyst having a porous support having at least one of thermally or electrically conductive particles bonded by a polymer, and enzymes embedded into pores of the porous support. A process of manufacturing an enzyme-embedded porous support includes forming solution of monomers, enzymes, a solvent, and at least one of electrically and thermally conductive particles, polymerizing the monomers by adding initiators to the solution, and evaporating the solvent to produce an enzyme-embedded porous support. A process of manufacturing an enzyme embedded porous support, includes mixing enzymes, at least one of electrically conductive or thermally conductive particles, and a polymer in a solvent, and evaporating the solvent.

First claim

What is claimed is:

1. A catalyst, comprising:
a polymer porous support including at least one of thermally or electrically conductive particles coated with a layer of the polymer and bonded to the polymer porous support; and
enzymes embedded into pores of the polymer porous support to produce embedded enzymes,
wherein a lifetime of the embedded enzymes is longer than a lifetime of the enzymes not embedded into the pores in the same conditions.

2. The catalyst of claim 1 , wherein the particles comprise thermally conductive particles of at least one selected from the group consisting of: aluminum oxide; silicon carbide; aluminum nitride; boron arsenide; carbon nanotubes; graphene; graphite; and carbon nanoparticles.

3. The catalyst of claim 1 , wherein the particles comprise electrically conductive particles of at least one selected from the group consisting of: carbon nanoparticles; graphene; graphite; carbon nanotubes; carbon black; silver and copper particles or flakes.

4. The catalyst of claim 1 , wherein the particles have a size in a range of 1 nanometer to 500 nanometers.

5. The catalyst of claim 1 , wherein the catalyst forms an electrode in an electrochemical cell.

6. The catalyst of claim 5 , wherein a volume fraction occupied by the embedded enzymes in the catalyst is in a range from 0.1% to 80%, a remaining volume fraction being occupied by the porous support and voids of empty space.

7. The catalyst of claim 1 , wherein the particles are thermally conductive particles and are selected from the group consisting of: aluminum nitrate; silicon carbide; aluminum nitride; boron arsenide; carbon nanotubes; graphene; graphite; and carbon nanoparticles.

8. The catalyst of claim 1 , wherein the particles are electrically conductive particles and are selected from the group consisting of: carbon particles; carbon black; graphene; graphite; carbon nanotubes; and metal particles or flakes.

9. The catalyst of claim 1 , wherein the electrically or thermally conductive particles have a shape of one of random; spherical; cylindrical; plate like shapes; and fibers.

10. The catalyst of claim 1 , wherein the enzymes embedded into pores of the porous support include at least one selected from the group consisting of: methane monooxygenase; proteinases; protein-catabolic enzymes; xylanase; and lipase.

11. The catalyst of claim 1 , wherein the enzymes are at least one of natural enzymes, or engineered enzymes.

12. The catalyst of claim 1 , wherein the polymer is a result of polymerization of monomers selected from the group consisting of: monofunctional acrylates and methacrylates; difunctional acrylates and methacrylates; tri, tetra, penta or hexa-acrylates and methacrylates; styrene; divinylbenzene; vinyl stearate; vinyl laurate; vinyl benzoate; vinyl acetate; ethyl vinyl ether; vinyl chloride; and 1-vinyl-2-pyrrolidone.

13. The catalyst of claim 1 , wherein the polymer is a water soluble polymer.

14. The catalyst of claim 1 , wherein the polymer is selected from a group consisting of polyvinylpyrrolidone; polyvinyl alcohol; polyethylene glycols; polyacrylamides; polyethyleneoxide; poly 2-hydroxyethyl methacrylate; and hydroxypropyl methylcellulose.

15. The catalyst of claim 1 , wherein a weight to weight ratio between the polymer and particles is in a range from 0.1 to 50%.

16. The catalyst of claim 1 , wherein a thermal conductivity of the particles is greater than or equal to 32 W/m·K.

17. The catalyst of claim 10 , wherein the enzymes comprise
methane monooxygenase enzymes.

18. The catalyst of claim 17 , wherein the methane monooxygenase enzymes are one of either natural methane monooxygenase enzymes or engineered methane monooxygenase enzymes.

19. The catalyst of claim 17 , wherein a thermal conductivity of the particles is greater than or equal to 32 W/m·K.

20. The catalyst of claim 17 , wherein a volume fraction occupied by the embedded methane monooxygenase enzymes in the catalyst is in a range from 0.1% to 80%, and a remaining volume fraction being occupied by the porous support and voids of empty space.

Assignees

• Palo Alto Res Ct Inc

Inventors

• Iftime Gabriel
• Cocker Eric
• Garner Sean
• Rivest Jessica Louis Baker

Classifications

• C12N11/04

  entrapped within the carrier, e.g. gel or hollow fibres · CPC title

• C25B11/04

  characterised by the material · CPC title

• C12N11/089

  obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds · CPC title

• C25B3/23

  Oxidation (halogenation C25B3/27) · CPC title

• C25B11/031

  Porous electrodes · CPC title