KR870011043A - Aluminum-hydrogen-oxygen composites, suspensions thereof, and preparation methods thereof - Google Patents

Abstract

No content

Description

Aluminum-hydrogen-oxygen composite, suspension thereof and preparation method thereof

Since this is an open matter, no full text was included.

1 is a schematic cross-sectional view of an embodiment of a device and components used in the first two steps of the method according to the invention.

FIG. 2 is a view similar to FIG. 1 showing another embodiment of the first two steps of the method according to the invention.

4 shows a Soxhlet apparatus in which redissolution of an aluminum-hydrogen-oxygen complex formed on an immersion metal surface is performed.

Claims (42)

Method for producing an aluminum-hydrogen-oxygen composite, consisting of the following a, b and c: a. Contacting an aluminum metal having a purity of at least about 99.94% by weight and containing at least trace amounts of silicon with an acid of a type and concentration that will remove and prevent oxide formation on the metal; b, contacting the acid-treated aluminum metal with a mercury source in an oxygen-containing atmosphere; c. The mercury-contacting aluminum is partially immersed in the hydrogen halide solution for a time sufficient to begin growth of the aluminum-hydrogen-oxygen complex thereon. The method of claim 1, wherein the aluminum has a purity of at least about 99.99% and contains from about 30 to about 100 ppm of silicon and up to about 40 weight percent of iron based on the weight of the silicon. The method of claim 1, wherein step (c) is performed at a temperature of about 5-about 40 ° C. 5. Product by the method of claim 1. Product by the method of claim 2. Product by the method of claim 3. The method of claim 1, wherein the aluminum has a purity of at least about 99.99% and contains about 0.3- about 1 ppm hexagonal silicon. Product by the method of claim 7. Process for the preparation of a suspension of an aluminum-hydrogen-oxygen complex capable of releasing oxygen and hydrogen in the presence of a halogen-containing compound, consisting essentially of the following a-f: a. Contacting an aluminum metal with a purity of at least 99.94% by weight and containing at least trace amounts of silicon with an acid source of a type and concentration that will remove and prevent oxide formation on the metal; b. Contacting the acid-treated aluminum metal with a mercury source in an oxygen-containing atmosphere; c. The mercury-contacting aluminum is partially immersed therein in a hydrochloric acid solution for a time sufficient to begin growth of the composite; d. Dissolving the complex at least partially in a hydrochloric acid solution to form a suspension; e. Cooling the suspension; f. The pH of the suspension is adjusted to between about 5.0 and about 5.8. The method of claim 9, wherein the aluminum has a purity of at least about 99.94% and contains about 30-about 100 ppm silicon and up to about 40 weight percent iron based on the weight of the silicon. 10. The method of claim 9, wherein step (c) is performed at a temperature of about 5- about 40 ° C. Product by the method of claim 9. Product by the method of claim 10. Product by the method of claim 11. Method for producing aluminum-hydrogen-oxygen powder, consisting of the following a, b and c: a. An aluminum metal having a purity of at least 99.99% by weight and containing about 60 to about 90 ppm of silicon and up to about 30% by weight of iron based on the weight of the silicon, at a concentration of hydrochloric acid that will remove and interfere with oxide formation on the metal. Contact with; b. Contacting the acid-treated aluminum metal with a mercury metal in an oxygen-containing atmosphere; c. The mercury-contacting aluminum is partially immersed in the hydrochloric acid solution at a temperature of about 20-about 30 ° C. for a time sufficient to start growth of aluminum-hydrogen-oxygen powder therefrom. Product by the method of claim 15. Process for the preparation of a suspension of an aluminum-hydrogen-oxygen complex capable of releasing oxygen and hydrogen in the presence of a halogen-containing compound, comprising: a. An aluminum metal having a purity of at least 99.99% by weight and containing about 60 to about 90 ppm of silicon and up to about 30% by weight of iron based on the weight of the silicon, at a concentration of hydrochloric acid that will remove and interfere with oxide formation on the metal. Contact with; b. Contacting the acid-treated aluminum metal with a mercury metal in an oxygen-containing atmosphere; c. The mercury-contacting aluminum is partially immersed therein in a hydrochloric acid solution at a temperature of about 20-about 30 ° C. for a time sufficient to initiate growth of the composite; d. Dissolving the complex at least partially in hydrochloric acid solution; e. The product thus produced is cooled to a temperature of about 50 ° C. or less; f. The pH of the cooling product is adjusted to between about 5.3 and about 5.5. Product by the method of claim 17. Method for producing an aluminum-hydrogen-oxygen composite composed of the following a-e: a. Contacting an aluminum metal having a purity of at least about 99.94% by weight and containing at least trace amounts of silicon with an acid of a type and concentration that will remove and prevent oxide formation on the metal; b. Contacting the acid-treated aluminum metal with a mercury source in an oxygen containing atmosphere; c. Defining each of the immersed and non-immersed portions of the mercury-contacting aluminum by partially immersing the mercury-contacting aluminum in a hydrochloric acid solution; d. Leaving the mercury-contacting aluminum partially immersed on the non-immersed portion of the mercury-contacting aluminum for a time sufficient to begin growth of the aluminum-hydrogen-oxygen composite; e. The composite formed on the non-immersed portion of the mercury-contacting aluminum is collected. 20. The method of claim 19, wherein the aluminum is at least about 99.99% pure and contains about 30-about 100 ppm silicon and up to about 40 weight percent iron based on the weight of the silicon. 20. The method of claim 19, wherein steps (c) and (d) are performed at a temperature of about 5- about 40 ° C. The method of claim 19, wherein the aluminum is about 99.99% pure and contains about 0.3-about 1 ppm hexagonal silicon. 20. The method of claim 19, wherein steps (c) and (d) are performed at a temperature of about 20 ° C to about 30 ° C. Product by the method of claim 19. The product by the method of claim 20. Product by the method of claim 21. Product by the method of claim 22. The product by the method of claim 23. A method consisting of the following a-h for preparing a suspension of aluminum-hydrogen-oxygen capable of releasing oxygen and hydrogen in the presence of a halogen-containing compound: a. Contacting an aluminum metal having a purity of at least about 99.94% by weight and containing at least trace amounts of silicon with an acid of a type and concentration that will remove and prevent oxide formation on the metal; b. Contacting the acid-treated aluminum metal with a mercury source in an oxygen containing atmosphere; c. Defining each of the immersed and non-immersed portions of the mercury-contacting aluminum by partially immersing the mercury-contacting aluminum in a hydrochloric acid solution; d. Leaving the mercury-contacting aluminum partially immersed on the non-immersed portion of the mercury-contacting aluminum for a time sufficient to begin growth of the aluminum-hydrogen-oxygen composite; e. Collecting a composite formed on the non-immersed portion of the mercury-contacting aluminum; f. At least partially re-dissolving the complex collected in step e in a hydrochloric acid solution to form a suspension; g. Cooling the suspension; h. The pH of the suspension is adjusted to between about 5.0 and about 5.8. 30. The method of claim 29, wherein the aluminum metal has a purity of at least about 99.94% and contains about 30-about 100 ppm silicon and up to about 40 weight percent iron based on the weight of the silicon. 30. The method of claim 29, wherein steps (c) and (d) are performed at a temperature of about 5- about 40 ° C. The method of claim 29, wherein steps (c) and (d) are performed at a temperature of about 20-about 30 ° C. 30. The method of claim 29, further adjusting the pH of the suspension to about 5.3-about 5.5. A product by the method of claim 29. A product by the method of claim 30. Product by the method of claim 31. The product according to the method of claim 32. A product by the method of claim 33. Method for producing aluminum-hydrogen-oxygen powder composed of the following a-e: a. Hydrochloric acid at a concentration of at least about 99.99% by weight and containing from about 60 to about 900 ppm of silicon and up to about 30% by weight of iron based on the weight of the silicon to remove and interfere with oxide formation on the metal Contact with; b. Contacting the acid-treated aluminum metal with a mercury metal in an oxygen containing atmosphere; c. Defining the immersion and non-immersion portions of the aluminum metal by partially immersing the mercury-contacting aluminum in a hydrochloric acid solution at a temperature of about 20-about 30 ° C .; d. Leaving the aluminum metal partially immersed for a time sufficient to start the growth of the aluminum-hydrogen-oxygen composite from the non-immersed portion of the aluminum metal; e. The composite formed on the non-immersed portion of the aluminum metal is collected. A product by the method of claim 39. A method consisting of the following a-h for preparing a suspension of an aluminum-hydrogen-oxygen complex capable of releasing oxygen and hydrogen in the presence of a halogen-containing compound: a. Contacting an aluminum metal having a purity of at least about 99.94% by weight and containing at least trace amounts of silicon with an acid of a type and concentration that will remove and prevent oxide formation on the metal; b. Contacting the acid-treated aluminum metal with a mercury source in an oxygen containing atmosphere; c. Defining each of the immersed and non-immersed portions of the mercury-contacting aluminum by partially immersing the mercury-contacting aluminum in a hydrochloric acid solution; d. Leaving the mercury-contacting aluminum partially immersed on the non-immersed portion of the mercury-contacting aluminum for a time sufficient to begin growth of the aluminum-hydrogen-oxygen composite; e. Collecting a composite formed on the unimmersed portion of the mercury-contacting aluminum; f. Dissolving the complex at least partially in hydrochloric acid solution; g. The product thus produced is cooled to a temperature of about 50 ° C. or less; h. Adjust the pH of the cooling product to about 5.3-about 5.5. Product by the method of claim 41. ※ Note: The disclosure is based on the initial application.