Catalytic hydrogen production

Patent metadata

Field	Value
Publication number	US-11305989-B2
Application number	US-201816495548-A
Country	US
Kind code	B2
Filing date	Mar 20, 2018
Priority date	Mar 20, 2017
Publication date	Apr 19, 2022
Grant date	Apr 19, 2022

Abstract

The present disclosure provides a method of producing hydrogen. The method includes heating a mixture comprising a metal component exhibiting a nanostructured surface, water, and carbon dioxide.

First claim

What is claimed is:

1. A method of producing hydrogen, the method comprising:
heating a mixture to produce hydrogen, the mixture comprising:
a synthesized metal component exhibiting a nanostructured surface comprising a plurality of features each independently having dimensions of about 1 nm to about 1,000 nm in length, about 1 nm to about 1,000 nm in height, and about 1 nm to about 1000 nm in thickness,
water, and
at least one of carbon dioxide and carbonate;

wherein the method is conducted in the substantial absence of light during the heating.

2. The method of producing hydrogen of claim 1 , further comprising contacting the metal component, the water, and the carbon dioxide.

3. The method of claim 1 , wherein the metal component comprises an elemental metal or alloy thereof.

4. The method of claim 3 , wherein the elemental metal or alloy thereof ranges from about 1 wt % to about 100 wt % of the metal component.

5. The method of claim 3 , wherein the elemental metal or alloy thereof comprises at least one of Co, Ti, Ru, Rh, Pd, Os, Ir, La, Ce, Fe, Cu, and Ni.

6. The method of claim 5 , wherein the elemental metal or alloy thereof is Co.

7. The method of claim 6 , wherein the Co is formed by reacting a cobalt salt with a reducing agent.

8. The method of claim 7 , wherein the cobalt salt is at least one of perchlorate, chloride, nitrate and sulfate or Co(ClO 4 ) 2 , CoCl 2 , Co(NO 3 ) 2 , and CoSO 4 , respectively.

9. The method of claim 7 , wherein the reducing agent is at least one of N 2 H 4 and NaBH 4 , sodium dithionite, sodium hypophosphite, lithium aluminum hydride, tin (II) salts, and hydrogen.

10. The method of claim 3 , wherein the metal component is magnetic.

11. The method of claim 1 , wherein a pH of the mixture is above 7.

12. The method of claim 1 , wherein the nanostructured surface of the metal component is formed by a method free of acid etching, base etching, or laser etching.

13. The method of claim 1 , wherein a pressure in an environment of the mixture ranges from about 0 psi to about 250 psi.

14. The method of claim 1 , wherein the quantity of the metal component in the mixture ranges from about 0.01 wt % to about 60 wt % of the mixture.

15. The method of claim 1 , wherein a temperature of a reaction vessel used to contain the mixture is increased to about 200° C. during the hydrogen production.

16. The method of claim 1 , wherein a purity of the hydrogen produced ranges from about 20% (v/v) to about 99% (v/v).

17. A kit for performing the method of claim 1 , the kit comprising a mixture comprising:
the metal component exhibiting the nanostructured surface and configured to produce the hydrogen when heated while in contact with water and carbon dioxide;
a quantity of water; and
a quantity of carbon dioxide.

18. The kit of claim 17 , wherein the mixture produces hydrogen upon an increase of a temperature, pressure or both of the kit.

19. The kit of claim 18 wherein a purity of the hydrogen produced ranges from about 20% (v/v) to about 99% (v/v).

Assignees

• Univ Massachusetts

Inventors

• Ryan David K
• Jayamanna T A Mahesh

Classifications

• C01B3/10 Primary

  by reaction of water vapour with metals · CPC title

• B01J35/45

  Nanoparticles · CPC title

• B01J37/16

  Reducing · CPC title

• B01J23/75

  Cobalt · CPC title

• B01J27/232

  Carbonates · CPC title