US3821356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of high purity halides
Assignee: United States Atomic Energy Commission
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Filing: 1973-03-08
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Granted: 1974-06-28
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Expires: 1993-03-08
Abstract
Abstract A single-step process for the conversion of lanthanide or actinide oxides by taking advantage of the halogenating and solvent capacity of selected amine hydrohalides is described. The process can be conducted in a single reaction vessel with a minimum of manipulations.
Inventors
- 👤 W Baldwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:02
CPC Classifications
C; C01; C01G; C01G43/00; C01G43/04; C01F; C01F17/00; C01F17/20; C01F17/253; C01F17/259
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
103 words
A method for preparing an anhydrous halide comprising reacting a metal oxide ZO2 where Z is an actinide having an atomic number in the range 90-103 with at least a threefold excess of a liquefied amine hydrohalide derived from an amine selected from the group consisting of N-methyl aniline, N,N-dimethyl aniline, methylamine, dimethylamine, ethylamine, diethylamine, methylethylamine, monoisobutylamine, cyclohexylamine, hydroxylamine, hydrazine, quinoline, and pyridine to convert the oxide to a double salt of the halide of said oxide and said amine hydrohalide, heating the reaction mixture to decompose said double salt and volatilize the hydrohalide and recovering a solid residue comprising said anhydrous halide.
Claim 2
Dependent Claim
34 words
The method according to claim 2 wherein the metal oxide is selected from the group consisting of UO3 and U3O8 and the resulting anhydrous halide is UO2X2 where X F, Cl, Br, and I.
Claim 3
Dependent Claim
44 words
The method according to claim 3 wherein the metal oxide is an actinide oxide ZO2 where Z is an actinide having an atomic number in the range 90-103 and the resulting anhydrous halide is ZX3 or ZX4 where X F, Cl, Br, and I.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |