Reactor and method for generating hydrogen from a metal hydride

• US 20050058595A1
• Filed: 09/15/2003
• Published: 03/17/2005
• Est. Priority Date: 09/15/2003
• Status: Abandoned Application

• Current Assignee: Celgard LLC (Asahi Kasei Corporation)
• Original Assignee: Celgard LLC (Asahi Kasei Corporation)
• Inventors: Schuster, Oliver, Shi, Lie
• Application Number:
  US10/662,564
• Publication Number:
  US 20050058595A1
• Time in Patent Office: Days
• US Class Current: 423/657
• CPC Class Codes: B01D 69/08 Hollow fibre membranes manufacture of hollow fibres D01D5/24, D01F1/08
• CPC Class Codes: B01J 16/005 in the presence of catalytically active bodies, e.g. porous plates
• CPC Class Codes: B01J 19/2475 Membrane reactors
• CPC Class Codes: B01J 7/02 by wet methods
• CPC Class Codes: C01B 2203/041 In-situ membrane purification during hydrogen production
• CPC Class Codes: C01B 2203/0465 Composition of the impurity
• CPC Class Codes: C01B 2203/066 with fuel cells
• CPC Class Codes: C01B 3/065 from a hydride
• CPC Class Codes: C01B 3/501 by diffusion
• CPC Class Codes: Y02E 60/36 Hydrogen production from non-carbon containing sources, e.g. by water electrolysis

Abstract

The present invention provides for a method and a reactor for generating hydrogen from a metal hydride. The method includes the steps of: providing a fuel containing a metal hydride and water; catalyzing a reaction of the hydride and water by using a functional membrane system; and thereby generating hydrogen. The reactor for generating hydrogen includes a vessel, and a functional membrane system disposed within the vessel. The functional membrane system compartmentalizes the vessel into two chambers. One of the two chambers is a fuel chamber, and the other chamber is a hydrogen chamber. Fuel, containing a metal hydride and water, is introduced to the fuel chamber, where it undergoes a catalytic reaction to generate hydrogen. The generated hydrogen then passes through the functional membrane system into the hydrogen chamber, and exits the reactor via the hydrogen outlets. The functional membrane system includes a membrane and a catalyst. The catalyst is adapted to promote the removal of hydrogen from a metal hydride.

Claims

1. A method for generating hydrogen from a metal hydride comprises the steps of:

providing a fuel containing a metal hydride and water;

catalyzing a reaction of the metal hydride and water by using a functional membrane system; and

thereby generating hydrogen.

2. The method of claim 1 wherein said functional membrane system comprises:

a membrane; and

a catalyst adapted to promote the removal of hydrogen from a metal hydride, said catalyst being contained in said membrane.

3. The method of claim 2 wherein said catalyst being a transition metal catalyst.

4. The method of claim 3 wherein said transition metal catalyst containing Group IB to Group VIIIB metals of the Periodic Table or compounds made thereof.

5. The method of claim 4 wherein said transition metal catalyst being selected from ruthenium, cobalt, ruthenium compounds, cobalt compounds, and combinations thereof.

6. The method of claim 2 wherein said method further comprises:

a hydrophilic layer;

a metallic catalyst layer; and

a microporous diffusion layer.

7. The method of claim 6 wherein said hydrophilic layer and said metallic catalyst layer comprise a single layer.

8. The method of claim 7 wherein said single layer being a coating on said microporous diffusion layer.

9. The method of claim 6 wherein said metallic catalyst layer and said microporous diffusion layer being a single layer.

10. The method of claim 9 wherein said catalyst being embedded in said microporous diffusion layer.

11. The method of claim 6 wherein said hydrophilic layer being coated on said metallic catalyst layer.

12. The method of claim 6 wherein said metallic catalyst layer being affixed on said microporous diffusion layer by a process selected from the group consisting of vapor deposition, ionic bonding, and electrostatic bonding.

13. The method of claim 2 wherein said membrane being a flat sheet or a hollow fiber.

14. The method of claim 2 wherein said membrane being an asymmetric membrane.

15. The method of claim 14 wherein said asymmetric membrane having a skin.

16. The method of claim 2 wherein said functional membrane system further comprises a plurality of functional membrane systems.

17. The method of claim 16 wherein said plurality of functional membrane systems comprises a bundle of hollow fibers.

18. A reactor for generating hydrogen comprises:

a vessel; and

a functional membrane system disposed within said vessel so that two chambers are formed within said vessel, one said chamber being a fuel chamber and said other chamber being a hydrogen chamber, whereby when a fuel containing a metal hydride and water are introduced to said fuel chamber, said fuel being catalytically reacted to form hydrogen and said hydrogen passing through said functional membrane system to said hydrogen chamber.

19. The reactor of claim 18 wherein said functional membrane system further comprises a bundle of hollow fiber functional membrane systems.

20. The reactor of claim 18 wherein said functional membrane system comprises:

a membrane; and

a catalyst adapted to promote the removal of hydrogen from a metal hydride, said catalyst being contained in said membrane.

21. The reactor of claim 20 wherein said catalyst being a transition metal catalyst.

22. The reactor of claim 21 wherein said transition metal catalyst containing Group IB to Group VIIIB metals of the Periodic Table or compounds made thereof.

23. The reactor of claim 22 wherein said transition metal catalyst being selected from ruthenium, cobalt, ruthenium compounds, cobalt compounds, and combinations thereof.

24. The reactor of claim 20 further comprises:

a hydrophilic layer;

a metallic catalyst layer; and

a microporous diffusion layer.

25. The reactor of claim 24 wherein said hydrophilic layer and said metallic catalyst layer comprise a single layer.

26. The reactor of claim 25 wherein said single layer being a coating on said microporous diffusion layer.

27. The reactor of claim 24 wherein said metallic catalyst layer and said microporous diffusion layer being a single layer.

28. The reactor of claim 27 wherein said catalyst being embedded in said microporous diffusion layer.

29. The reactor of claim 24 wherein said hydrophilic layer being coated on said metallic catalyst layer.

30. The reactor of claim 24 wherein said metallic catalyst layer being affixed on said microporous diffusion layer by a process selected from the group consisting of vapor deposition, ionic bonding, and electrostatic bonding.

31. The reactor of claim 20 wherein said membrane being a flat sheet or a hollow fiber.

32. The reactor of claim 20 wherein said membrane being an asymmetric membrane.

33. The reactor of claim 32 wherein said asymmetric membrane having a skin.

34. The functional membrane system of claim 20 wherein said functional membrane system further comprises a plurality of functional membrane systems.

35. The functional membrane system of claim 34 wherein said plurality of functional membrane systems comprises a bundle of hollow fibers.

36. A functional membrane system comprises:

a membrane; and

a catalyst adapted to promote the removal of hydrogen from a metal hydride, said catalyst being contained in said membrane.

37. The functional membrane system of claim 36 wherein said catalyst being a transition metal catalyst.

38. The functional membrane system of claim 37 wherein said transition metal catalyst containing Group IB to Group VIIIB metals of the Periodic Table or compounds made thereof.

39. The functional membrane system of claim 38 wherein said transition metal catalyst being selected from ruthenium, cobalt, ruthenium compounds, cobalt compounds, and combinations thereof.

40. The functional membrane system of claim 36 further comprises:

a hydrophilic layer;

a metallic catalyst layer; and

a microporous diffusion layer.

41. The functional membrane system of claim 40 wherein said hydrophilic layer and said metallic catalyst layer comprise a single layer.

42. The functional membrane system of claim 41 wherein said single layer being a coating on said microporous diffusion layer.

43. The functional membrane system of claim 40 wherein said metallic catalyst layer and said microporous diffusion layer being a single layer.

44. The functional membrane system of claim 43 wherein said catalyst being embedded in said microporous diffusion layer.

45. The functional membrane system of claim 40 wherein said hydrophilic layer being coated on said metallic catalyst layer.

46. The functional membrane system of claim 40 wherein said metallic catalyst layer being affixed on said microporous diffusion layer by a process selected from the group consisting of vapor deposition, ionic bonding, and electrostatic bonding.

47. The functional membrane system of claim 36 wherein said membrane being a flat sheet or a hollow fiber.

48. The functional membrane system of claim 36 wherein said membrane being an asymmetric membrane.

49. The functional membrane system of claim 48 wherein said asymmetric membrane having a skin.

50. The functional membrane system of claim 36 wherein said functional membrane system further comprises a plurality of functional membrane systems.

51. The functional membrane system of claim 50 wherein said plurality of functional membrane systems comprises a bundle of hollow fibers.