US5162301A
Expired / Lapsed
US
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Separation of paramagnetic and diamagnetic gases
Assignee: Yeda Research and Development Co Ltd
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Filing: 1991-03-28
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Granted: 1992-11-10
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Expires: 2011-03-28
Abstract
Abstract The invention relates to a new method for the separation of gaseous paramagnetic species from diamagnetic or weakly paramagnetic gaseous species by contacting the mixture of such species with a high Tc superconductive material in permeable form, so that one of the species is enriched respective of the other one by permeation through such porous barrier.
Inventors
- 👤 Shymon Reich
- 👤 Israel Cabasso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:05
CPC Classifications
B; B01; B01D; B01D71/00; B01D71/02; B01D71/024; B01D71/0271; B01D53/00; B01D53/22; B01D53/228; Y; Y10; Y10S; Y10S505/00; Y10S505/70; Y10S505/701
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
69 words
A method for separation of a component from a gaseous mixture of paramagnetic molecules and diamagnetic molecules comprising: contacting said mixture with a high Tc superconductive permeable body of a material in the diamagnetic state, below the transition temperature to the superconductive state, such that the diamagnetic molecules preferentially permeate the body of the high Tc superconductive permeable material while permeation of paramagnetic molecules through said body is retarded.
Claim 2
Independent Claim
69 words
A method for separation of a component from a gaseous mixture of paramagnetic molecules and diamagnetic molecules comprising: contacting said mixture with a high Tc superconductive permeable body of a material in the diamagnetic state, below the transition temperature to the superconductive state, such that the diamagnetic molecules preferentially permeate the body of the high Tc superconductive permeable material while permeation of paramagnetic molecules through said body is retarded.
Claim 3
Dependent Claim
14 words
The method of claim 1, wherein said gaseous material separated is an oxygen/nitrogen mixture.
Claim 4
Dependent Claim
61 words
The method of claim 1, wherein the gaseous mixture is air, said high Tc superconductive permeable body is a porous ceramic in the form of pellets, hollow fibers, or a ceramic film supported by a permeable support, and wherein said air mixture is contacted with said high Tc superconductive body at the lowest temperature just above the dew point of air.
Claim 5
Dependent Claim
86 words
The method of claim 3, wherein said high Tc superconductive permeable (body) is a porous ceramic selected from copper oxide containing compounds selected from: ______________________________________
Tl.sub.2 Ba.sub.2 CuO.sub.6
Tc = 80° K.
Bi.sub.2 Cu.sub.1 Sr.sub.2 Cu.sub.2 O.sub.8+x
Tc = 85° K.
Bi.sub.2 Cu.sub.1 Sr.sub.2 Cu.sub.2 O.sub.8+δ
YBa.sub.2 Cu.sub.3 O.sub.7-x
Tc = 92° K.
YBa.sub.2 Cu.sub.3 O.sub.7-δ
Tl.sub.2 Ca.sub.1 Ba.sub.2 Cu.sub.2 O.sub.8
Tc = 105° K.
Tl.sub.2 Ca.sub.2 Ba.sub.2 Cu.sub.3 O.sub.10
Tc = 125° K.
and
Bl.sub.1.8 Pb.sub.0.2 Ca.sub.2 Sr.sub.2 Cu.sub.3 O.sub.x
Tc = 111° K.
______________________________________
Claim 6
Independent Claim
74 words
A method for separation of a mixture including nitrogen and (comprising) paramagnetic and diamagnetic molecules, comprising: contacting said mixture with a high Tc superconductive permeable body of YBa 2 Cu 3 O 7-X or Yba 2 Cu 3 O 7 -δ in the diamagnetic state at the lowest temperature just above the dew point of air at 81.3° K. such that an enrichment of diamagnetic nitrogen molecules occurs by permeation through said permeable body.
Claim 7
Independent Claim
74 words
A method for separation of a mixture including nitrogen and (comprising) paramagnetic and diamagnetic molecules, comprising: contacting said mixture with a high Tc superconductive permeable body of YBa 2 Cu 3 O 7-X or Yba 2 Cu 3 O 7 -δ in the diamagnetic state at the lowest temperature just above the dew point of air at 81.3° K. such that an enrichment of diamagnetic nitrogen molecules occurs by permeation through said permeable body.
Claim 8
Independent Claim
85 words
A method of separation of a component from a gaseous mixture of paramagnetic molecules and diamagnetic molecules, comprising: flowing said gaseous mixture against a permeable body formed of a high Tc superconductive material in the diamagnetic state, below the transition temperature Tc to the superconductive state, such that the diamagnetic molecules preferentially permeate and pass through the high Tc superconductive permeable body while the paramagnetic molecules are preferentially restrained thereby, said permeable body in the diamagnetic state acting as a barrier to the paramagnetic molecules.
Claim 9
Independent Claim
85 words
A method of separation of a component from a gaseous mixture of paramagnetic molecules and diamagnetic molecules, comprising: flowing said gaseous mixture against a permeable body formed of a high Tc superconductive material in the diamagnetic state, below the transition temperature Tc to the superconductive state, such that the diamagnetic molecules preferentially permeate and pass through the high Tc superconductive permeable body while the paramagnetic molecules are preferentially restrained thereby, said permeable body in the diamagnetic state acting as a barrier to the paramagnetic molecules.
References Cited (Backward Citations)
US4704139A
Cited
DE3630913A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-11-10 | 1996-05-11 | 1996-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-10 | 2000-05-11 | 2000-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-10 | 2004-05-11 | 2004-11-10 | $7700.00 | Window Closed / Lapsed |