CA1123816A - Granulating and activating metal to form metal hydride - Google Patents
Granulating and activating metal to form metal hydrideInfo
- Publication number
- CA1123816A CA1123816A CA320,247A CA320247A CA1123816A CA 1123816 A CA1123816 A CA 1123816A CA 320247 A CA320247 A CA 320247A CA 1123816 A CA1123816 A CA 1123816A
- Authority
- CA
- Canada
- Prior art keywords
- metal material
- hydrogen
- pressure
- temperature
- given
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/0005—Reversible uptake of hydrogen by an appropriate medium, i.e. based on physical or chemical sorption phenomena or on reversible chemical reactions, e.g. for hydrogen storage purposes ; Reversible gettering of hydrogen; Reversible uptake of hydrogen by electrodes
- C01B3/001—Reversible uptake of hydrogen by an appropriate medium, i.e. based on physical or chemical sorption phenomena or on reversible chemical reactions, e.g. for hydrogen storage purposes ; Reversible gettering of hydrogen; Reversible uptake of hydrogen by electrodes characterised by the uptaking medium; Treatment thereof
- C01B3/0026—Reversible uptake of hydrogen by an appropriate medium, i.e. based on physical or chemical sorption phenomena or on reversible chemical reactions, e.g. for hydrogen storage purposes ; Reversible gettering of hydrogen; Reversible uptake of hydrogen by electrodes characterised by the uptaking medium; Treatment thereof of one single metal or a rare earth metal; Treatment thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/023—Hydrogen absorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/0005—Reversible uptake of hydrogen by an appropriate medium, i.e. based on physical or chemical sorption phenomena or on reversible chemical reactions, e.g. for hydrogen storage purposes ; Reversible gettering of hydrogen; Reversible uptake of hydrogen by electrodes
- C01B3/001—Reversible uptake of hydrogen by an appropriate medium, i.e. based on physical or chemical sorption phenomena or on reversible chemical reactions, e.g. for hydrogen storage purposes ; Reversible gettering of hydrogen; Reversible uptake of hydrogen by electrodes characterised by the uptaking medium; Treatment thereof
- C01B3/0031—Intermetallic compounds; Metal alloys; Treatment thereof
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B6/00—Hydrides of metals including fully or partially hydrided metals, alloys or intermetallic compounds ; Compounds containing at least one metal-hydrogen bond, e.g. (GeH3)2S, SiH GeH; Monoborane or diborane; Addition complexes thereof
- C01B6/02—Hydrides of transition elements; Addition complexes thereof
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B6/00—Hydrides of metals including fully or partially hydrided metals, alloys or intermetallic compounds ; Compounds containing at least one metal-hydrogen bond, e.g. (GeH3)2S, SiH GeH; Monoborane or diborane; Addition complexes thereof
- C01B6/04—Hydrides of alkali metals, alkaline earth metals, beryllium or magnesium; Addition complexes thereof
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B6/00—Hydrides of metals including fully or partially hydrided metals, alloys or intermetallic compounds ; Compounds containing at least one metal-hydrogen bond, e.g. (GeH3)2S, SiH GeH; Monoborane or diborane; Addition complexes thereof
- C01B6/24—Hydrides containing at least two metals; Addition complexes thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
Abstract
ABSTRACT
A metal material, which is capable of reacting with hydrogen to form a metal hydride, is simultaneously granulated and conditioned with hydrogen to activate the metal material to a state in which it is capable of readily reacting with and absorbing hydrogen. The granulation and activation are achieved by heating the metal material to a temperature of at least about 200°F and treating the heated metal material with hydrogen, while con-currently subjecting the metal material to mechanical impact to reduce the average particle size thereof to less than about 1 centimeter.
A metal material, which is capable of reacting with hydrogen to form a metal hydride, is simultaneously granulated and conditioned with hydrogen to activate the metal material to a state in which it is capable of readily reacting with and absorbing hydrogen. The granulation and activation are achieved by heating the metal material to a temperature of at least about 200°F and treating the heated metal material with hydrogen, while con-currently subjecting the metal material to mechanical impact to reduce the average particle size thereof to less than about 1 centimeter.
Description
1~.2~:1 6 This invention pertains to granulating metal materials which are capable of reacting with and absorbing hydrogen, and to conditioning or actlvating the metal material to its s-tate in which i-t will readily react wi-th and absorb hydrogen.
The storage of hydrogen in the form of a granular metal hydride has several advantages over other storage methods such as cryogenic storage of liquid hydrogen or pressurized storage of gaseous hydrogen. Primarily, it is a safe, efficient method of storing hydrogen. The device for storing hydrogen as a metal hydride is commonly referred to as a hydride reservoir, 10 which consists of a pressure vessel or container filled with a granular metal material capable of being converted to a metal hydride. The container is provided with a hydrogen gas connection and a means of handling the thermal load encountered during hydriding (reaction with and absorption of hydrogen) and dehydriding (decomposition of metal hydride and release of hydrogen) .
Heretofore, the metal material which was to be utilized in the hydride vessel or container was ground into small particles having a size of about one millimeter or less using conventional reduction equipment capable of handling very hard material. The granular metal material then requlred 20 condltioning before a practical forward rate of hydriding can be attained.
This conditioning involves an activation of the metal material to a state in which it is capable of readily reacting with and absorbing hydrogen. The conditioning involves heating the m-etal material, subjecting the material to a vacuum to outgas the surface thereof, and flushing the vacuumed material with hydrogen gas which apparently further cleans the particle surfaces of the metal material and initiates a hydriding reaction. However, ~ 3~:~6 at the temperature at which the condltioning is accomplished, there is relatively little hydrogen actually absorbed by the metal material. Never-theless, it is evident Erom the changes occurring in the metal material that a reaction does occur during the conditioning stage. Severe embrittlement of the metal material occurs, and an appreciable breakdown in particle size takes place (see publication BNL 50589, November 1976 from Brookhaven ~ational Laboratories) during the conditioning stage. Generally, the conditioning stage must be repeated in cyclic fashion to obtain adequate activation, i.e., a second cycle, and usually subsequent cycles, of vacuuming the material and then flushing the material with hydrogen are required following the initial vacuuming and flushing.
The principal objective of the present invention was to provide a process for simultaneously granulating and conditioning the metal material, whereby the reduction apparatus heretofore necessary in grinding the very hard metal material is eliminated. Another objective was to achieve activation more effectively and re efficiently.
The invention may be generally defined as a method for s~multa-neously granulating a metal material selected from the group consisting of titanium, nickel, rare earth metals, calcium, magnesium, iron-titanium alloys, lanthanam-nickel alloys, calcium-nickel alloys, mischmetal-nickel alloys, manganese-nickel alloys, manganese-iron-titanium alloys, and mischmetal-calcium-nickel alloys, and conditioning or activating the metal material, said method comprising the following steps:
(l) heating the metal material to a temperature within the range of about 200F and about 1000F, said metal material having an average particle siæe ~thin the range of about 1 centimeter to about 1 meter;
The storage of hydrogen in the form of a granular metal hydride has several advantages over other storage methods such as cryogenic storage of liquid hydrogen or pressurized storage of gaseous hydrogen. Primarily, it is a safe, efficient method of storing hydrogen. The device for storing hydrogen as a metal hydride is commonly referred to as a hydride reservoir, 10 which consists of a pressure vessel or container filled with a granular metal material capable of being converted to a metal hydride. The container is provided with a hydrogen gas connection and a means of handling the thermal load encountered during hydriding (reaction with and absorption of hydrogen) and dehydriding (decomposition of metal hydride and release of hydrogen) .
Heretofore, the metal material which was to be utilized in the hydride vessel or container was ground into small particles having a size of about one millimeter or less using conventional reduction equipment capable of handling very hard material. The granular metal material then requlred 20 condltioning before a practical forward rate of hydriding can be attained.
This conditioning involves an activation of the metal material to a state in which it is capable of readily reacting with and absorbing hydrogen. The conditioning involves heating the m-etal material, subjecting the material to a vacuum to outgas the surface thereof, and flushing the vacuumed material with hydrogen gas which apparently further cleans the particle surfaces of the metal material and initiates a hydriding reaction. However, ~ 3~:~6 at the temperature at which the condltioning is accomplished, there is relatively little hydrogen actually absorbed by the metal material. Never-theless, it is evident Erom the changes occurring in the metal material that a reaction does occur during the conditioning stage. Severe embrittlement of the metal material occurs, and an appreciable breakdown in particle size takes place (see publication BNL 50589, November 1976 from Brookhaven ~ational Laboratories) during the conditioning stage. Generally, the conditioning stage must be repeated in cyclic fashion to obtain adequate activation, i.e., a second cycle, and usually subsequent cycles, of vacuuming the material and then flushing the material with hydrogen are required following the initial vacuuming and flushing.
The principal objective of the present invention was to provide a process for simultaneously granulating and conditioning the metal material, whereby the reduction apparatus heretofore necessary in grinding the very hard metal material is eliminated. Another objective was to achieve activation more effectively and re efficiently.
The invention may be generally defined as a method for s~multa-neously granulating a metal material selected from the group consisting of titanium, nickel, rare earth metals, calcium, magnesium, iron-titanium alloys, lanthanam-nickel alloys, calcium-nickel alloys, mischmetal-nickel alloys, manganese-nickel alloys, manganese-iron-titanium alloys, and mischmetal-calcium-nickel alloys, and conditioning or activating the metal material, said method comprising the following steps:
(l) heating the metal material to a temperature within the range of about 200F and about 1000F, said metal material having an average particle siæe ~thin the range of about 1 centimeter to about 1 meter;
(2) treating the metal material with hydrogen at a hydrogen partial pressure of between one atmosphere and about 50 atmospheres to activate the metal material to a state in which it is capable of readily reacting with and absorbing hydrogen when contacted with hydrogen at a given temperature and pressure and of releasing hydrogen when either the ~3-.Z~:L6 temperature is increased above the given temperature, the pressure is reduced below the given pressure or the temperature -Ls increased above the given temperature and the pressure is concurrently reduced below the given pressure; and
(3) concurrently subjecting the metal material to mechanlcal impact sufficient to reduce its average particle size to less than about 1 centimeter.
In a preferred embodiment, the heating and hydrogen treatment are performed within a rotary ball mill, with the ball mill being rotated to subject the metal material to mechanical impact. The ball mill can contain a plurality of balls made of a material which is substantially harder than the metal material which is being heated and treated with hydrogen.
The activating mechanism which occurs as the metal material is treated with hydrogen also produces a profound change in the physical properties of the metal material. The metal material tends to develop stresses within the particles causing fractioning of the material along the stress boundaries. The material becomes extremely fragile and can be broken into fine particles with minimal mechanical impact.
When the metal material is broken into small particles in the presence of hydrogen, the newly created surfaces oE the small particles have not been contaminated with surface contaminants such as oxygen and water.
The small particles of metallic material readily react with hydrogen to form the activated metallic hydride material which is capable of reversibly absorbing large quantities of hydrogen. In contrast, when the metal material is ground to small particle size on conventional reduction equipment, the material must be subjected to a vacuum followed by heating in the presence of hydrogen, with the vacuuming and hydrogen treatment being repeated numerous times before the material is capable of reversibly absorbing its maximum amount of hydrogen. In accordance with the present invention, the same effect is achieved in the single activation which occurs simultaneously with the particle reduction.
~3.~ 6 A metal material selected from the group CQnSiSting of iron, titanium, nickel, rare earth metals, calcium, magnesium, manganese, and mixtures or alloys thereof is simultaneously granulated and ac-tivated to a state in which it is capable of readily reacting with and absorbing hydrogen when contacted with hydrogen at a given temperature and pressure and of releasing hydrogen when either the temperature is increased above the given temperature, the pressure is reduced below the given pressure, or the temperature is increased above the given temperature and the pressure is concurrently reduced below the given pressure. The activation and 10 particle size reduction is accomplished by heating the metal material having a particle size greater than about 1 centimeter to a temperature of at least about 200 F. The heated metal material is then treated with hydrogen while concurrently being ~ubjected to mechanical impact sufficient to reduce the average particle size of the material to less than about 1 centimeter. The hydrogen and mechanical impact treatment can, of course, be started anytime during the period in which the material is being heated.
The duration oi the hydrogen and mechanical impact treatment depends on the initial particle size of the metal material. Chunks of material up to about 1 meter or more in diameter can be processed according to this 20 invention if appropriate means are provided for subjecting the chunk of material to mechanical impact.
In a preferred embodiment of the invention, the metal material is placed in a rotary ball mill. As the ball mill rotates, the material is heated and treated with hydrogen. Alternatively, the material can be heated in a separate heating means, with the heated material being fed to the ball mill for treatment with the hydrogen. The rotation of the ball mill produces -~.23~:~6 mechanical impact between particles of the material and between the ma-terial and the internal surfaces of the ball mill. The ball mill may also CQntain a plurality oE balls made of material which is subs-tantially harder than the metal material which has been heated and treated with hydrogen .
In the heat and hydrogen treatment, the metal material is heated to a temperature of between about 200 F and 1000 F, and subjected to hydrogen at a hydrogen partial pressure of between about 1 atmosphere and 50 atmospheres. Just prior to the hydrogen treatment, the metal material 10 is advantageously subjected to a vacuum in order to outgas the surface of the material. Flushing of the material with an inert gas such as argon can also be effective in outgasing the material prior to the hydrogen treatment.
Whereas, this invention is described with respect to particular embodiments, it is to be understood that changes may be made therein and other embodiments constructed without departing from the novel inventive concepts set forth in the claims which follow.
In a preferred embodiment, the heating and hydrogen treatment are performed within a rotary ball mill, with the ball mill being rotated to subject the metal material to mechanical impact. The ball mill can contain a plurality of balls made of a material which is substantially harder than the metal material which is being heated and treated with hydrogen.
The activating mechanism which occurs as the metal material is treated with hydrogen also produces a profound change in the physical properties of the metal material. The metal material tends to develop stresses within the particles causing fractioning of the material along the stress boundaries. The material becomes extremely fragile and can be broken into fine particles with minimal mechanical impact.
When the metal material is broken into small particles in the presence of hydrogen, the newly created surfaces oE the small particles have not been contaminated with surface contaminants such as oxygen and water.
The small particles of metallic material readily react with hydrogen to form the activated metallic hydride material which is capable of reversibly absorbing large quantities of hydrogen. In contrast, when the metal material is ground to small particle size on conventional reduction equipment, the material must be subjected to a vacuum followed by heating in the presence of hydrogen, with the vacuuming and hydrogen treatment being repeated numerous times before the material is capable of reversibly absorbing its maximum amount of hydrogen. In accordance with the present invention, the same effect is achieved in the single activation which occurs simultaneously with the particle reduction.
~3.~ 6 A metal material selected from the group CQnSiSting of iron, titanium, nickel, rare earth metals, calcium, magnesium, manganese, and mixtures or alloys thereof is simultaneously granulated and ac-tivated to a state in which it is capable of readily reacting with and absorbing hydrogen when contacted with hydrogen at a given temperature and pressure and of releasing hydrogen when either the temperature is increased above the given temperature, the pressure is reduced below the given pressure, or the temperature is increased above the given temperature and the pressure is concurrently reduced below the given pressure. The activation and 10 particle size reduction is accomplished by heating the metal material having a particle size greater than about 1 centimeter to a temperature of at least about 200 F. The heated metal material is then treated with hydrogen while concurrently being ~ubjected to mechanical impact sufficient to reduce the average particle size of the material to less than about 1 centimeter. The hydrogen and mechanical impact treatment can, of course, be started anytime during the period in which the material is being heated.
The duration oi the hydrogen and mechanical impact treatment depends on the initial particle size of the metal material. Chunks of material up to about 1 meter or more in diameter can be processed according to this 20 invention if appropriate means are provided for subjecting the chunk of material to mechanical impact.
In a preferred embodiment of the invention, the metal material is placed in a rotary ball mill. As the ball mill rotates, the material is heated and treated with hydrogen. Alternatively, the material can be heated in a separate heating means, with the heated material being fed to the ball mill for treatment with the hydrogen. The rotation of the ball mill produces -~.23~:~6 mechanical impact between particles of the material and between the ma-terial and the internal surfaces of the ball mill. The ball mill may also CQntain a plurality oE balls made of material which is subs-tantially harder than the metal material which has been heated and treated with hydrogen .
In the heat and hydrogen treatment, the metal material is heated to a temperature of between about 200 F and 1000 F, and subjected to hydrogen at a hydrogen partial pressure of between about 1 atmosphere and 50 atmospheres. Just prior to the hydrogen treatment, the metal material 10 is advantageously subjected to a vacuum in order to outgas the surface of the material. Flushing of the material with an inert gas such as argon can also be effective in outgasing the material prior to the hydrogen treatment.
Whereas, this invention is described with respect to particular embodiments, it is to be understood that changes may be made therein and other embodiments constructed without departing from the novel inventive concepts set forth in the claims which follow.
Claims (6)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A method for simultaneously granulating a metal material selected from the group consisting of titanium, nickel, rare earth metals, calcium, magnesium, iron-titanium alloys, lanthanam-nickel alloys, calcium-nickel alloys, mischmetal-nickel alloys, manganese-nickel alloys, manganese-iron-titanium alloys, and mischmetal-calcium-nickel alloys, and conditioning or activating the metal material, said method comprising:
heating the metal material to a temperature within the range of about 200°F and about 1000°F, said metal material having an average particle size within the range of about 1 centimeter to about 1 meter; treating the metal material with hydrogen at a hydrogen partial pressure of between one atmosphere and about 50 atmospheres to activate the metal material to a state in which it is capable of readily reacting with and absorbing hydrogen when contacted with hydrogen at a given temperature and pressure and of releasing hydrogen when either the temperature is increased above the given temperature, the pressure is reduced below the given pressure or the temperature is increased above the given temperature and the pressure is concurrently reduced below the given pressure; and concurrently subjecting the metal material to mechanical impact sufficient to reduce its average particle size to less than about 1 centimeter.
heating the metal material to a temperature within the range of about 200°F and about 1000°F, said metal material having an average particle size within the range of about 1 centimeter to about 1 meter; treating the metal material with hydrogen at a hydrogen partial pressure of between one atmosphere and about 50 atmospheres to activate the metal material to a state in which it is capable of readily reacting with and absorbing hydrogen when contacted with hydrogen at a given temperature and pressure and of releasing hydrogen when either the temperature is increased above the given temperature, the pressure is reduced below the given pressure or the temperature is increased above the given temperature and the pressure is concurrently reduced below the given pressure; and concurrently subjecting the metal material to mechanical impact sufficient to reduce its average particle size to less than about 1 centimeter.
2. A method in accordance with claim 1, wherein the heating and treatment with hydrogen are performed within a rotary ball mill, and the ball mill is concurrently rotated to subject the metal material to mechanical impact.
3. A method in accordance with claim 2, wherein the ball mill contains a plurality of balls made from a material which is substantially harder than the metal material which has been heated and treated with hydrogen.
4. A method in accordance with claim 1, wherein the starting metal material is an alloy of iron and titanium.
5. A method for simultaneously granulating a metal material selected from the group consisting of iron, titanium, nickel, rare earth calcium, magnesium, manganese and mixtures or alloys thereof and conditioning or activating the metal material, said method comprising subjecting the metal material to a vacuum to outgas the surface of the material of any impurity gases; heating the metal material to a temperature within the range of about 200°F. and about 1000°, said metal material having a particle size greater than about 1 centimeter; treating the metal material with hydrogen at a hydrogen partial pressure of between one atmosphere and about 50 atmospheres to activate the metal material to a state in which it is capable of readily reacting with and absrobing hydrogen when contacted with hydrogen at a given temperature and pressure and of releasing hydrogen when either the temperature is increased above the given temperature, the pressure is reduced below the given pressure, or the temperature is increased above the given temperature and the pressure is concurrently reduced below the given pressure; and concurrently subjecting the metal material to mechanical impact sufficient to reduce its average particle size to less than about 1 centimeter.
6. A method in accordance with claim 5, wherein the metal material is flushed with an inert gas while the metal material is being subjected to a vacuum.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US87543978A | 1978-02-06 | 1978-02-06 | |
| US875,439 | 1978-02-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1123816A true CA1123816A (en) | 1982-05-18 |
Family
ID=25365810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA320,247A Expired CA1123816A (en) | 1978-02-06 | 1979-01-25 | Granulating and activating metal to form metal hydride |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS54126688A (en) |
| AU (1) | AU525692B2 (en) |
| BR (1) | BR7900706A (en) |
| CA (1) | CA1123816A (en) |
| DE (1) | DE2903460A1 (en) |
| FR (1) | FR2416051A1 (en) |
| GB (1) | GB2013532B (en) |
| IT (1) | IT1110269B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4292265A (en) * | 1980-01-21 | 1981-09-29 | The United States Of America As Represented By The United States Department Of Energy | Method for preparing porous metal hydride compacts |
| US5441826A (en) * | 1993-04-28 | 1995-08-15 | Sanyo Electric Co., Ltd. | Hydrogen-absorbing alloy electrode |
| DE4419456A1 (en) * | 1994-06-03 | 1995-12-07 | Goldschmidt Ag Th | Process for the production of magnesium hydride |
| DE10331785B4 (en) * | 2003-07-11 | 2007-08-23 | H. C. Starck Gmbh & Co. Kg | Process for producing fine metal, alloy and composite powders |
| JP4083786B2 (en) * | 2006-07-20 | 2008-04-30 | 友宏 秋山 | Magnesium-based hydride manufacturing method and magnesium-based hydride manufacturing apparatus |
| JP2008239367A (en) * | 2007-03-26 | 2008-10-09 | Taiheiyo Cement Corp | Method for producing hydrogen storage material |
| US7998454B2 (en) | 2007-05-10 | 2011-08-16 | Bio Coke Lab. Co. Ltd. | Method of producing magnesium-based hydrides and apparatus for producing magnesium-based hydrides |
| US8758643B2 (en) | 2009-03-05 | 2014-06-24 | Bio Coke Lab. Co. Ltd | Method of producing magnesium-based hydrides |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1004605A (en) * | 1961-05-15 | 1965-09-15 | Philips Electronic Associated | Improvements in or relating to processes for the manufacture of ductile metals in a finely-divided form |
| US3295951A (en) * | 1965-02-02 | 1967-01-03 | Nat Res Corp | Production of metals |
| GB1171313A (en) * | 1966-03-17 | 1969-11-19 | Int Nickel Ltd | Improvements relating to the Treatment of Nickel Powder |
| US3508414A (en) * | 1968-03-05 | 1970-04-28 | Atomic Energy Commission | Method of storing hydrogen |
| US3516263A (en) * | 1969-03-25 | 1970-06-23 | Atomic Energy Commission | Method of storing hydrogen |
| CH585984A5 (en) * | 1974-11-18 | 1977-03-15 | Siemens Ag | |
| US4040410A (en) * | 1974-11-29 | 1977-08-09 | Allied Chemical Corporation | Thermal energy storage systems employing metal hydrides |
| US4021183A (en) * | 1975-05-07 | 1977-05-03 | Institute Of Gas Technology | Arrangement and method of burner ignition |
| DE2550584A1 (en) * | 1975-11-11 | 1977-05-12 | Deutsche Automobilgesellsch | SHAPE-RESISTANT HYDROGEN STORAGE MATERIAL |
| JPS5348918A (en) * | 1976-10-16 | 1978-05-02 | Agency Of Ind Science & Technol | Mm ni5-xcox material for storing hydrogen |
| US4141719A (en) * | 1977-05-31 | 1979-02-27 | Fansteel Inc. | Tantalum metal powder |
| US4219357A (en) * | 1978-03-30 | 1980-08-26 | Crucible Inc. | Method for producing powder metallurgy articles |
-
1979
- 1979-01-25 CA CA320,247A patent/CA1123816A/en not_active Expired
- 1979-01-26 GB GB7902783A patent/GB2013532B/en not_active Expired
- 1979-01-26 AU AU43709/79A patent/AU525692B2/en not_active Ceased
- 1979-01-30 DE DE19792903460 patent/DE2903460A1/en not_active Ceased
- 1979-02-05 IT IT19893/79A patent/IT1110269B/en active
- 1979-02-05 FR FR7902909A patent/FR2416051A1/en not_active Withdrawn
- 1979-02-05 JP JP1149879A patent/JPS54126688A/en active Pending
- 1979-02-06 BR BR7900706A patent/BR7900706A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IT7919893A0 (en) | 1979-02-05 |
| AU4370979A (en) | 1979-10-18 |
| BR7900706A (en) | 1979-09-04 |
| GB2013532B (en) | 1982-04-07 |
| JPS54126688A (en) | 1979-10-02 |
| FR2416051A1 (en) | 1979-08-31 |
| AU525692B2 (en) | 1982-11-25 |
| IT1110269B (en) | 1985-12-23 |
| GB2013532A (en) | 1979-08-15 |
| DE2903460A1 (en) | 1979-08-09 |
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