Patent US3708392A successfully refreshed from Google Patents.
US3708392A
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Isotope enrichment process for lanthanide and actinide elements
Assignee: United States Atomic Energy Commission
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Filing: 1970-12-22
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Granted: 1973-01-02
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Expires: 1990-12-22
Abstract
Abstract This invention relates to a method of enriching lanthanide and actinide isotopes which comprises loading at least one target lanthanide or actinide cation onto a finely divided particle of synthetic faujasite, heating said located faujasite at a temperature in the range of 350* to 750* C. to fix said cation, irradiating said previously heated faujasite with a neutron source to induce a (n, gamma ) transmutation reaction, and then selectively eluting a transmutation product having an atomic number greater than the irradiated target cation.
Inventors
- 👤 D Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:48
CPC Classifications
G; G21; G21G; G21G1/00; G21G1/04; G21G4/00; G21G4/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
31 words
The method according to claim 1 in which the transmutation product is selectively eluted from the heated faujasite containing fixed target cations with an aqueous solution of LiCl, NH4NO3, or Na2SO4.
Claim 2
Dependent Claim
27 words
The method according to claim 1 in which the yield of transmutation product is enhanced by loading the faujasite with a mixture consisting of lanthanides or actinides.
Claim 3
Dependent Claim
37 words
The method according to claim 1 in which the lanthanide- or actinide-loaded faujasite is washed, prior to neutron irradiation, with an eluant such as LiCl, NH4NO3, or Na2SO4 in order to remove any readily exchangeable target cations.
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) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |