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Patent US5486225A successfully refreshed from Google Patents.
US5486225A
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Process for producing an alloy
Assignee: Michigan State University
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Filing: 1994-04-04
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Granted: 1996-01-23
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Expires: 2014-04-04
Abstract
Abstract A process for producing finely divided 20 to 500 angstrom metal particles, metals with oxide coatings or metal oxides using an alkalide or electride in a non-reactive solvent is described. The process produces various forms of the metal depending upon the oxidizability of the metal initially produced by the process. The process is useful for producing catalysts, alloys, colloidal solutions, semi-conductors and the like.
Inventors
- 👤 James L. Dye
- 👤 Ahmed S. Ellaboudy
- 👤 Kuo-Lih Tsai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:25
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/16; B22F9/18; B22F9/24; B22F1/00; B22F1/05; B22F1/054; B22F1/18; B82; B82Y; B82Y30/00; C; C21; C21B; C21B15/00; C21B15/006; C22; C22C; C22C5/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
85 words
A process for the production of an alloy which comprises: reducing in a reaction mixture a first metal salt containing a first metal and a second metal salt containing a second metal different from the first metal with a reducing agent selected from the group consisting of an electride and an alkalide in an organic solvent and in the absence of an oxidizing atmosphere to produce a first and second metal compound as an alloy of the first and second metals in finely divided form.
Claim 2
Dependent Claim
85 words
A process for the production of an alloy which comprises: reducing in a reaction mixture a first metal salt containing a first metal and a second metal salt containing a second metal different from the first metal with a reducing agent selected from the group consisting of an electride and an alkalide in an organic solvent and in the absence of an oxidizing atmosphere to produce a first and second metal compound as an alloy of the first and second metals in finely divided form.
Claim 3
Dependent Claim
19 words
The process of claim 1 wherein the solvent is selected from the group consisting of dimethyl ether and tetrahydrofuran.
Claim 4
Dependent Claim
19 words
The process of claim 1 wherein the reaction is conducted at a temperature between about -80° and 20° C.
Claim 5
Dependent Claim
47 words
The process of claim 1 wherein the reducing agent is selected from the group consisting of alkali metal 15-crown-5 alkalide, alkali metal 18-crown-6 alkalide and alkali metal 18-crown-6 electride wherein alkali metal and alkalide are selected from the group consisting of lithium, sodium, potassium, cesium and rubidium.
Claim 6
Dependent Claim
39 words
The process of claim 1 wherein the metal of the metal salt is selected from Groups IB through VIIIB and Groups IIIA through VIA of the periodic table including atomic numbers 13, 14, 21-34, 39-52, 57-83, 89 and above.
Claim 7
Dependent Claim
18 words
The process of claim 1 wherein the electride or alkalide is produced in situ prior to the reaction,
Claim 8
Dependent Claim
50 words
The process of claim 1 wherein the first metal salt is a first metal halide, the second metal salt is a second metal halide, wherein the halide is selected from the group consisting of a bromide, chloride and iodide, and wherein both metal halides are reduced to form the compound.
Claim 9
Dependent Claim
26 words
The process of claim 7 wherein the first metal halide is AuCl 3 and the second metal halide is ZnI 2 and the compound is AuZn.
Claim 10
Dependent Claim
26 words
The process of claim 7 wherein the first metal halide is AuCl 3 and second metal salt is a copper salt and the compound is AuCu.
Claim 11
Dependent Claim
25 words
The process of claim 7 wherein the first metal halide is CuCl 2 and second metal halide is ZnI 2 and the compound is CuZn.
References Cited (Backward Citations)
US4107180A
Cited
JPS63125605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-01-22 | 1999-07-24 | 2000-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-22 | 2003-07-24 | 2004-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-22 | 2007-07-24 | 2008-01-23 | $7700.00 | Window Closed / Lapsed |