Chemical hydride formulation and system design for controlled generation of hydrogen

• US 20110020215A1
• Filed: 07/23/2009
• Published: 01/27/2011
• Est. Priority Date: 07/23/2009
• Status: Abandoned Application

• Current Assignee: Intelligent Energy Limited (Lb-shell Plc)
• Original Assignee: Intelligent Energy Limited (Lb-shell Plc)
• Inventors: Fabian, Tibor, Ryu, WonHyoung, Braithwaite, Daniel
• Application Number:
  US12/460,794
• Publication Number:
  US 20110020215A1
• Time in Patent Office: Days
• US Class Current: 423/658.2
• CPC Class Codes: C01B 3/065 from a hydride
• CPC Class Codes: Y02E 60/36 Hydrogen production from non-carbon containing sources, e.g. by water electrolysis

Abstract

A chemical hydride liquid reactant distribution mixture is provided. The mixture includes a fuel mixture having at least one hydride and at least one activating agent. The invention further includes a liquid-distributing agent (LDA), a form-stabilizing agent, and at least one anti-caking agent. The liquid reactant distribution mixture reduces caking and precipitation while promoting liquid reactant distribution, where the chemical hydride liquid reactant distribution mixture generates hydrogen via hydrolysis.

Claims

1. A chemical hydride liquid reactant distribution mixture comprising:

a. a fuel mixture, wherein said fuel mixture comprises at least one hydride and at least one activating agent;

b. a liquid-distributing agent (LDA)

c. a form-stabilizing agent; and

d. at least one anti-caking agent, wherein said liquid reactant distribution mixture reduces caking and precipitation while promoting said liquid reactant distribution, wherein said chemical hydride liquid reactant distribution mixture generates hydrogen via hydrolysis.

2. The liquid reactant distribution mixture of claim 1, wherein said LDA is selected from the group consisting of hydrophilic polymers, carbohydrates and sugar alcohols.

3. The liquid reactant distribution mixture of claim 2, wherein said hydrophilic polymer comprises poly alkyl (acrylic) acid and its salt, wherein said poly alkyl (acrylic) acid and its salt is selected from the group consisting of as poly(acrylic acid), poly(α

-ethylacrylic acid), poly(α

-propylacrylic acid), poly(methacrylic acid), poly(sodium acrylate), poly(sodium methacrylate), poly(2-hydroxyethyl methacrylate), and polyacrylamide.

4. The liquid reactant distribution mixture of claim 2, wherein said hydrophilic polymers are selected from the group consisting of poly(N,N-dimethyl acrylamide), poly(N-isopropyl acrylamide), poly(ethylene glycol) and poly(ethylene oxide).

5. The liquid reactant distribution mixture of claim 4, wherein said poly(ethylene glycol) and poly(ethylene oxide) is selected from the group consisting of poly(ethylene glycol) methylether (initiator based on methoxy ethanol), poly(ethylene glycol) with disulfide linkage, poly(ethylene glycol) methylether (initiator based on 2-methoxy propanol), poly(ethylene glycol) monoethyl ether (nitiator based on ethoxy ethanol), poly(ethylene glycol) dimethyl ether, poly(ethylene glycol) mono-benzylether, poly(ethylene glycol) dibenzylmethylene terminated (initiator based on diphenyl methylene), poly(ethylene glycol) dimethylamine and hydroxy terminated, poly(ethylene glycol) dimethylamine and methoxy terminated.

6. The liquid reactant distribution mixture of claim 2, wherein said hydrophilic polymers are selected from the group consisting of poly(methyl vinyl ether), poly(2-vinyl N-methylpyridinium iodide), poly(4-vinyl N-methyl pyridinium iodide), poly(N-vinyl imidazole-quaternized with CH3I), poly(ethylene imine), poly(vinylamine) with poly(vinyl carboxylic acid amide), and poly(styrene sulfonic acid) and its salt.

7. The liquid reactant distribution mixture of claim 6, wherein said poly(styrene sulfonic acid) and its salt is selected from the group consisting of poly(styrene sulfonic acid) dialysed, poly(styrene sulfonic acid), undialysed, poly(styrene sulfonic acid cesium salt), dialysed, poly(styrene sulfonic acid cesium salt), undialysed, poly(styrene sulfonic acid sodium salt), dialysed, poly(styrene sulfonic acid sodium salt), and undialysed;

poly(vinyl alcohol).

8. The liquid reactant distribution mixture of claim 6, wherein said poly(vinylamine) and poly(vinyl carboxylic acid amide) is selected from the group consisting of poly(N-vinylamine), poly(N-vinyl formamide), poly(N-vinyl isobutyramide), and poly(N-vinyl pyrrolidone).

9. The liquid reactant distribution mixture of claim 2, wherein said carbohydrates are selected from the group consisting of monosaccharides disaccharides and polysaccharides.

10. The liquid reactant distribution mixture of claim 2, wherein said sugar alcohols are selected from the group consisting of glycol, glycerol, erythritol, threitol, arabitol, xylitol, ribitol, mannitol, sorbitol, dulcitol, iditol, isomalt, maltitol, lactitol, or polyglycitol.

11. The liquid reactant distribution mixture of claim 2, wherein said LDA further comprise material selected from the group consisting of microcrystalline cellulose, carboxymethyl cellulose, methyl cellulose, alginic acid, dibasic calcium phosphate, dextrates, calcium sulfate dehydrate, and compressible sucrose.

12. The liquid reactant distribution mixture of claim 2, wherein said LDA comprises a weight percentage of said liquid reactant distribution mixture in a range from 0.1 to 50 percent.

13. The liquid reactant distribution mixture of claim 1, wherein said form-stabilizing agent is selected from the group consisting of starch, methyl cellulose, hypromellose, microcrystalline cellulose, dibasic calcium phosphate, dextrate, sucrose, and polyethylene glycol.

14. The liquid reactant distribution mixture of claim 1, wherein said at least one anti-caking agent is selected from the group consisting of magnesium carbonate, calcium carbonate, silica (silicon dioxide), sodium bicarbonate, sodium ferrocyanide, potassium ferrocyanide, calcium ferrocyanide, bone phosphate, sodium silicate, calcium silicate, magnesium trisilicate, talcum powder, sodium aluminosilicate, potassium aluminium silicate, calcium aluminosilicate, bentonite, aluminium silicate, stearic acid, and polydimethylsiloxane.

15. The liquid reactant distribution mixture of claim 1, wherein said at least one anti-caking agent comprises a weight percentage of said liquid reactant distribution mixture in a range from 0.1 to 10 percent.

16. The liquid reactant distribution mixture of claim 1, wherein said at least one hydride is selected from the group consisting of sodium borohydride, lithium borohydride, lithium aluminum hydride, lithium hydride, sodium hydride, magnesium hydride, and calcium hydride.

17. The liquid reactant distribution mixture of claim 1, wherein said at least one activating agent comprises a acidic catalyst wherein said acidic catalyst is selected from the group consisting of boric acid, malic acid, succinic acid, oxalic acid, citric acid, tartaric acid, malonic acid, boric oxide, mucic acid, calcium chloride, sodium borofluoride, phthalic acid, salicylic acid, alum, benzoic acid, phthalic anahydride, sulfamic acid, ammonium alum, ammonium chloride, maleic anahyrdride, sodium acid sulfate, sodium diacid phosphate, aluminum sulfate, maleic acid, calcium chloride and ammonium carbonate.

18. The liquid reactant distribution mixture of claim 1, wherein said at least one activating agent comprises a metallic catalyst, wherein said metallic catalyst is selected from the group consisting of colloidal platinum, platinized asbestose, platinum oxidation catalyst, copper-chromic oxide, activated charcoal, Raney nickel, manganese(II) chloride, iron(II) chloride, cobalt(II) chloride, nickel(II) chloride, and copper(II) chloride.

19. The liquid reactant distribution mixture of claim 1, wherein said at least one activating agent comprises at least one salt selected from the group consisting of alkaline earth metals, alkali metals and halides.

20. The liquid reactant distribution mixture of claim 19, wherein said halides are selected from the group consisting MgCl₂, BeF₂, BeCl₂, BeBr₂, BeI₂, MgF₂, MgBr₂, MgCl₂, MgI₂, CaF₂, CaCl₂, CaBr₂, CaI₂, LiF, LiCl, LiBr, LiI, NaF, NaCl, NaBr, NaI, KF, KCl, KBr, KI, Li₂S, or Li₂Se. Finally, other candidates of activating agents include at least one of Cu, Co, Ni, Pt, Pd, Fe, Ru, Mn, and Cr.

21. A liquid reactant distribution mixture comprising:

a. a fuel;

b. at least one accelerator;

c. at least one liquid distributing agent (LDA); and

d. at least one form-stabilizing agent or binder.

22. The liquid reactant distribution mixture of claim 21, wherein said at least one accelerator is selected from the group consisting of an acidic accelerator, a metallic catalyst, a mixture of acidic and metallic accelerators, an acidic accelerator dissolved in a liquid reactant, a metallic accelerator dissolved in a liquid reactant, an acidic accelerator partially mixed in solid mixture and partially dissolved in liquid reactant, and a metallic accelerator partially mixed in solid mixture and partially dissolved in liquid reactant.

23. The liquid reactant distribution mixture of claim 21, wherein said fuel comprises sodium borohydride.

24. The liquid reactant distribution mixture of claim 21, wherein said at least one acidic accelerator is selected from the group consisting of oxalic acid, succinic acid, malonic acid, citric acid, tartic acid, malic acid, boric acid mucic acid, calcium chloride sodium borofluoride phthalic acid, salicylic acid, alum, bezoic acid, phthalic anhydride, sulfamic acid ammonium alum, ammonium chloride, maleic anhydride, sodium acid sulfate, sodium diacid phosphate, aluminum sulfate, and ammonium carbonate.

25. The liquid reactant distribution mixture of claim 21, wherein said at least one LDA is selected from the group consisting of hydrophilic polymers, carbohydrates, and sugar alcohols.

26. The liquid reactant distribution mixture of claim 21, wherein said at least one form-stabilizing agent is selected from the group consisting of starch, methyl cellulose, hypromellose, microcrystalline cellulose, dibasic calcium phosphate, dextrate, sucrose, and polyethylene glycol.

27. The liquid reactant distribution mixture of claim 21, wherein said liquid distribution mixture is compacted to form a solid structure, wherein said solid structure has a shape selected from the group consisting of a rod, a cylinder, a tube, a plate, a thin sheet, a block, micro-spheres, macro-spheres and powder form.

28. The liquid reactant distribution mixture of claim 21, wherein said liquid distribution mixture is uniformly mixed into a gel or paste.

29. The liquid reactant distribution mixture of claim 21 further comprises an anti-foam agent, wherein said anti-foam agent comprises alcohols selected from the group consisting of butyl alcohol, hexyl alcohol, and organosilicon compounds.

30. The liquid reactant distribution mixture of claim 21, wherein said organosilicon compounds are selected from the group consisting of polydimethylsiloxane, polyhydrosiloxane, and silica particles.