Patent US3504098A successfully refreshed from Google Patents.
Patent US3963826A successfully refreshed from Google Patents.
US3963826A
Expired / Lapsed
US
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Low temperature, low pressure hydrogen gettering
Assignee: Energy Research and Development Administration ERDA
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Filing: 1975-03-21
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Granted: 1976-06-15
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Expires: 1995-03-21
Abstract
Abstract The invention relates to the gettering of hydrogen and its isotopes, the gettering materials being painted or coated onto, or otherwise disposed in an area or volume from which hydrogen is to be removed.
Inventors
- 👤 D. Richard Anderson
- 👤 Robert L. Courtney
- 👤 Larry A. Harrah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:22
CPC Classifications
H; H01; H01J; H01J7/00; H01J7/14; H01J7/18; H01J7/183; B; B01; B01J; B01J33/00; C; C01; C01B; C01B3/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2998
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
71 words
In the method of gettering hydrogen and its isotopes including deuterium and tritium, by preparing a hydrogen getter which comprises coating a hydrogenation catalyst selected from the group of metals consisting of group VIII of the periodic table and alloys thereof with an active unsaturated organic material taken from the group consisting of dimerized propargyl phenyl ether, dimerized benzylacetylene, dimerized phenylpropiolate, dimerized biphenyl propargyl ether and polydipropargyl ether of bisphenol-A polymer.
Claim 2
Dependent Claim
71 words
In the method of gettering hydrogen and its isotopes including deuterium and tritium, by preparing a hydrogen getter which comprises coating a hydrogenation catalyst selected from the group of metals consisting of group VIII of the periodic table and alloys thereof with an active unsaturated organic material taken from the group consisting of dimerized propargyl phenyl ether, dimerized benzylacetylene, dimerized phenylpropiolate, dimerized biphenyl propargyl ether and polydipropargyl ether of bisphenol-A polymer.
Claim 3
Dependent Claim
40 words
The method of claim 1 which includes the step of employing said coated hydrogenation catalyst at hydrogen partial pressures of from about 10 - 6 atmospheres to about 2 atmospheres and at temperatures of from about -50°C to about 110°C.
Claim 4
Dependent Claim
59 words
The method of claim 1 wherein said coating is achieved by dissolving said organic material in an organic solvent to form a solution, mixing in said solution said hydrogenation catalyst to form a mixture, agitating said mixture to form a slurry, and thereafter drying said slurry to evaporate said solvent yielding said hydrogenation catalyst encapsulated in said organic material.
Claim 5
Dependent Claim
31 words
The method of claim 3 which includes the step of coating the walls of a system in which hydrogen concentration is to be minimized with said slurry prior to said drying.
Claim 6
Dependent Claim
61 words
The method of claim 3 wherein said organic material is dimerized propargyl phenyl ether in one gram quantity, said organic solvent is toluene in 50 milliliter quantity, said catalyst is palladium in four gram quantity of 5 weight percent palladium - 95 weight percent calcium carbonate, and the resultant hydrogen getter is sufficient to getter about 0.0153 gram of gaseous hydrogen.
Claim 7
Dependent Claim
30 words
The method of claim 1 which includes the step of the hydrogen getter with a polymeric binder selected from the group consisting of polystyrene, polyacrylonitrile, vinyl, epoxy and urethane polymers.
Claim 8
Dependent Claim
33 words
The method of claim 1 wherein said catalyst is at least one of the metals palladium and platinum in powder form having a surface area greater than about 15 square meters per gram.
Claim 9
Independent Claim
30 words
The method of claim which includes the step of supporting said hydrogenation catalyst on a porous inert substrate selected from the group consisting of asbestos, calcium carbonate, ceramic and carbon.
Claim 10
Dependent Claim
52 words
The method of claim 1 wherein said organic material comprises dimerized propargyl phenyl ether; said hydrogenation catalyst comprises palladium; and said method includes heating said dimerized propargyl phenyl ether until molten, thereafter contacting it with said palladium on calcium carbonate while so molten to coat said palladium and subsequently cooling to solidification.
References Cited (Backward Citations)
US3455845A
Cited
US3467493A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-15 | 1979-12-15 | 1980-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-15 | 1983-12-15 | 1984-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-15 | 1987-12-15 | 1988-06-15 | $7700.00 | Window Closed / Lapsed |