Patent US3940912A successfully refreshed from Google Patents.
US3940912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparation of deuterium by isotope separation
Assignee: Daimler Benz AG
•
Filing: 1974-02-14
•
Granted: 1976-03-02
•
Expires: 1994-02-14
Abstract
Abstract A method for separating deuterium from hydrogen in which the gaseous mixture of deuterium and hydrogen is brought into contact with TiNi, Ti 2 Ni or a mixture of these alloys and after a delay sufficient for the absorption of hydrogen in the metal alloy, the non-absorbed residual gas is separated from the metal alloy.
Inventors
- 👤 Helmut Buchner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:30
CPC Classifications
C; C01; C01B; C01B4/00; C01B3/00; C01B3/0005; C01B3/001; C01B3/0018; C01B3/0031; C01B3/0078; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/32
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
68 words
A method for separating deuterium and hydrogen, comprising the steps of bringing into contact a gaseous mixture of deuterium and hydrogen with a metal alloy material consisting essentially of TiNi, Ti 2 Ni, or a mixture thereof, and thereafter separating a non-absorbed residual gas enriched in deuterium from the metal alloy material after a period of time sufficient for the absorption of hydrogen in the metal alloy material.
Claim 2
Independent Claim
68 words
A method for separating deuterium and hydrogen, comprising the steps of bringing into contact a gaseous mixture of deuterium and hydrogen with a metal alloy material consisting essentially of TiNi, Ti 2 Ni, or a mixture thereof, and thereafter separating a non-absorbed residual gas enriched in deuterium from the metal alloy material after a period of time sufficient for the absorption of hydrogen in the metal alloy material.
Claim 3
Dependent Claim
21 words
A method according to claim 1, characterized in that the absorption is carried out at temperatures up to about 300° C.
Claim 4
Dependent Claim
24 words
A method according to claim 2, characterized in that the absorption is carried out at temperatures of between about 50° and about 150° C.
Claim 5
Dependent Claim
41 words
A method according to claim 3, characterized in that a hydrogen and deuterium mixture is brought into contact, in stages, with said metal alloy material in dehydrogenated powder form to provide a non-absorbed residual gas having a constantly increasing deuterium content.
Claim 6
Dependent Claim
27 words
A method according to claim 3, characterized in that the hydrogen/deuterium mixture is passed in continuous circulation over a said metal alloy material in a dehydrogenated form.
Claim 7
Dependent Claim
36 words
A method acording to claim 3, characterized in that a gaseous mixture of hydrogen and deuterium is passed through a closed cycle operation to cause said mixture to come into contact with the metal alloy material.
Claim 8
Dependent Claim
22 words
A method according to claim 3, characterized in that a separating installation is filled with the metal alloy material in powder form.
Claim 9
Dependent Claim
23 words
A method according to claim 7, characterized in that the separating installation is completely filled with the metal alloy material in powder form.
Claim 10
Dependent Claim
23 words
A method according to claim 7, characterized in that the separating installation is partially filled with the metal alloy material in powder form.
Claim 11
Dependent Claim
17 words
A method according to claim 7, characterized in that the separating installation is a Clusius separating column.
Claim 12
Dependent Claim
36 words
A method according to claim 3, characterized in that a Clusius separating column of a material permeable to hydrogen is used and the inside thereof is covered with a compact layer of the metal alloy material.
Claim 13
Dependent Claim
49 words
A method according to claim 1, characterized in that a hydrogen and deuterium mixture is brought into contact, in stages, with dehydrogenated portions of said metal alloy material in powder form to provide a non-absorbed reesidual gas, the deuterium content of which increases from one stage to the other.
Claim 14
Dependent Claim
27 words
A method according to claim 1, characterized in that the hydrogen/deuterium mixture is passed in continuous circulation over a said metal alloy material in a dehydrogenated form.
Claim 15
Dependent Claim
36 words
A method according to claim 1, characterized in that a gaseous mixture of hydrogen and deuterium is passed through a closed cycle operation to cause said mixture to come into contact with the metal alloy material.
Claim 16
Dependent Claim
22 words
A method according to claim 1, characterized in that a separating installation is filled with the metal alloy material in powder form.
Claim 17
Dependent Claim
23 words
A method according to claim 15, characterized in that the separating installation is completely filled with the metal alloy material in powder form.
Claim 18
Dependent Claim
23 words
A method according to claim 15, characterized in that the separating installation is partially filled with the metal alloy material in powder form.
Claim 19
Dependent Claim
17 words
A method according to claim 15, characterized in that the separating installation is a Clusius separating column.
Claim 20
Independent Claim
106 words
A method for separating deuterium and hydrogen, comprising the steps of bringing into contact a gaseous mixture of deuterium and hydrogen with a metal alloy material selected from the group consisting of TiNi, Ti 2 Ni, and a mixture TiNi and Ti 2 Ni in a Clusius separating column of a porous matrix whose pores are filled with the metal alloy material, thereafter separating a non-absorbed residual gas from the metal alloy material after a period of time sufficient for the absorption of hydrogen in the metal alloy material and conducting away hydrogen diffused through the column wall kept at temperatures up to about 300°C. maximum.
Claim 21
Independent Claim
106 words
A method for separating deuterium and hydrogen, comprising the steps of bringing into contact a gaseous mixture of deuterium and hydrogen with a metal alloy material selected from the group consisting of TiNi, Ti 2 Ni, and a mixture TiNi and Ti 2 Ni in a Clusius separating column of a porous matrix whose pores are filled with the metal alloy material, thereafter separating a non-absorbed residual gas from the metal alloy material after a period of time sufficient for the absorption of hydrogen in the metal alloy material and conducting away hydrogen diffused through the column wall kept at temperatures up to about 300°C. maximum.
Claim 22
Dependent Claim
24 words
A method according to claim 19, characterized in that the column wall is kept at a temperature of about 50° to about 150° C.
Claim 23
Dependent Claim
16 words
A method according to claim 19, characterized in that the diffused hydrogen is continuously carried off.
Claim 24
Dependent Claim
16 words
A method according to claim 19, characterized in that the diffused hydrogen is intermittently carried away.
Claim 25
Dependent Claim
36 words
A method according to claim 1, characterized in that a Clusius separating column of a material permeable to hydrogen is used and the inside thereof is covered with a compact layer of the metal alloy material.
Claim 26
Dependent Claim
125 words
A process for producing deuterium-enriched gas, which comprises contacting a gaseous mixture of deuterium and hydrogen at temperatures up to about 300°C. with a metal alloy material consisting essentially of TiNi, Ti 2 Ni or a mixture of TiNi and Ti 2 Ni for a period of time sufficient to absorb hydrogen in said material and to provide a deuterium-enriched residue gas, separating said residue gas from said material, heating the material having hydrogen absorbed therein to cause dehydrogenation and discharge of hydrogen from said material, thereafter contacting said dehydrogenation material with said gaseous mixture of deuterium and hydrogen or said deuterium-enriched residue gas to absorb additional hydrogen and to provide another deuterium-enriched residue gas, and separating said another deuterium-enriched residue gas from said material.
Claim 27
Dependent Claim
125 words
A process for producing deuterium-enriched gas, which comprises contacting a gaseous mixture of deuterium and hydrogen at temperatures up to about 300°C. with a metal alloy material consisting essentially of TiNi, Ti 2 Ni or a mixture of TiNi and Ti 2 Ni for a period of time sufficient to absorb hydrogen in said material and to provide a deuterium-enriched residue gas, separating said residue gas from said material, heating the material having hydrogen absorbed therein to cause dehydrogenation and discharge of hydrogen from said material, thereafter contacting said dehydrogenation material with said gaseous mixture of deuterium and hydrogen or said deuterium-enriched residue gas to absorb additional hydrogen and to provide another deuterium-enriched residue gas, and separating said another deuterium-enriched residue gas from said material.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-02 | 1979-09-01 | 1980-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-02 | 1983-09-01 | 1984-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-02 | 1987-09-01 | 1988-03-02 | $7700.00 | Window Closed / Lapsed |