US4554152A
Expired / Lapsed
US
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Method of preparing active magnesium-hydride or magnesium hydrogen-storer systems
Assignee: Studiengesellschaft Kohle gGmbH
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Filing: 1983-06-01
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Granted: 1985-11-19
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Expires: 2003-06-01
Abstract
Abstract A method of preparing an active magnesium-hydride or magnesium hydrogen-storer system which can reversibly take up H 2 , comprising contacting finely divided magnesium hydride or metallic magnesium with a solution of a metal complex or of a metal-organic compound of a transition metal of Subgroups IV-VIII of the periodic table, and then removing the solution. The product performs better with regard to speed and efficiency upon repeated hydrogenation and dehydrogenation, as in hydrogen storage and evolution.
Inventors
- 👤 Borislav Bogdanovic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:06
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/0005; C01B3/001; C01B3/0078; C01B3/0018; C01B3/0026; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/32; Y10; Y10S; Y10S420/00; Y10S420/90
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
50 words
A method of preparing an active magnesium hydride which can reversibly give off and take up H 2 , comprising contacting finely divided magnesium hydride with a solution of a transition metal organic compound, said transition metal being of Subgroups IV-VIII of the Periodic Table, and then removing the solution.
Claim 2
Independent Claim
50 words
A method of preparing an active magnesium hydride which can reversibly give off and take up H 2 , comprising contacting finely divided magnesium hydride with a solution of a transition metal organic compound, said transition metal being of Subgroups IV-VIII of the Periodic Table, and then removing the solution.
Claim 3
Dependent Claim
16 words
A method according to claim 1, wherein the contact is effected in the presence of hydrogen.
Claim 4
Dependent Claim
31 words
A method according to claim 1, wherein the transition metal is selected from the group consisting of titanium, vanadium, chromium, molybdenum, tungsten, iron, ruthenium, cobalt, rhodium, iridium, nickel, palladium and platinum.
Claim 5
Dependent Claim
15 words
A method according to claim 1, wherein the transition metal comprises nickel, palladium or iron.
Claim 6
Dependent Claim
29 words
A method according to claim 1, wherein the transition metal organic compound comprises at least one of bis-(1,5-cyclooctadiene)-nickel (COD 2 Ni), bis-(η 3 -allyl)-nickel, bis-(acetylacetonato)-nickel, bis-(ethylato)-nickel a phosphane-nickel-(O) complex.
Claim 7
Dependent Claim
27 words
A method according to claim 1, wherein the transition metal compound comprises at least one of bis-(η 3 -allyl)-palladium, a palladium-phosphane complex, tris-(η 3 -allyl)-iron and ferrocene.
Claim 8
Dependent Claim
39 words
A method according to claim 1, wherein the solvent of the solution is selected from the group consisting of an aliphatic hydrocarbon, an aromatic hydrocarbon, a cycloaliphatic hydrocarbon, an aliphatic ether, an aromatic ether and a cycloaliphatic aromatic ether.
Claim 9
Dependent Claim
25 words
A method according to claim 1, wherein the contact with the magnesium hydride is effected at a temperature of about -50° C. to +150° C.
Claim 10
Dependent Claim
35 words
A method according to claim 1, wherein the contact with the magnesium hydride is maintained for a time sufficient to deposit the transition metal in from about 0.05 to 20% by weight of the magnesium.
Claim 11
Dependent Claim
35 words
A method according to claim 1, wherein the contact with the magnesium hydride is maintained for a time sufficient to deposit the transition metal in from about 1 to 4% by weight of the magnesium.
Claim 12
Independent Claim
42 words
A method of preparing an active magnesium-hydride, comprising contacting finely divided metallic magnesium with a solution of a transition metal-organic compound, said transition metal being of Subgroups IV-VIII of the Period Table, removing the solvent, and then contacting the magnesium with hydrogen.
Claim 13
Independent Claim
42 words
A method of preparing an active magnesium-hydride, comprising contacting finely divided metallic magnesium with a solution of a transition metal-organic compound, said transition metal being of Subgroups IV-VIII of the Period Table, removing the solvent, and then contacting the magnesium with hydrogen.
Claim 14
Dependent Claim
31 words
A method according to claim 11, wherein the transition metal is selected from the group consisting of titanium, vanadium, chromium, molybdenum, tungsten, iron, ruthenium, cobalt, rhodium, iridium, nickel, palladium and platinum.
Claim 15
Dependent Claim
15 words
A method according to claim 11, wherein the transition metal comprises nickel, palladium or iron.
Claim 16
Dependent Claim
30 words
A method according to claim 11, wherein the transition metal organic compound comprises at least one of bis-(1,5-cyclooctadiene)-nickel (COD 2 Ni), bis-(η 3 -allyl)-nickel, bis-(acetylacetonato)-nickel, bis-(ethylato)-nickel and a phosphane-nickel-(O) complex.
Claim 17
Dependent Claim
27 words
A method according to claim 11, wherein the transition metal compound comprises at least one of bis-(η 3 -allyl)-palladium, a palladium-phosphane complex, tris-(η 3 -allyl)-iron and ferrocene.
Claim 18
Dependent Claim
39 words
A method according to claim 11, wherein the solvent of the solution is selected from the group consisting of an aliphatic hydrocarbon, an aromatic hydrocarbon, a cycloaliphatic hydrocarbon, an aliphatic ether, an aromatic ether and a cycloaliphatic aromatic ether.
Claim 19
Dependent Claim
28 words
A method according to claim 11, wherein the contact of the solution with the metallic magnesium is effected at a temperature of about -50° C. to +150° C.
Claim 20
Dependent Claim
35 words
A method according to claim 11, wherein the contact with the metallic magnesium is maintained for a time sufficient to deposit the transition metal in from about 0.05 to 20% by weight of the magnesium.
Claim 21
Dependent Claim
35 words
A method according to claim 11, wherein the contact with the metallic magnesium is maintained for a time sufficient to deposit the transition metal in from about 1 to 4% by weight of the magnesium.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-11-18 | 1989-05-20 | 1989-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-18 | 1993-05-20 | 1993-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-18 | 1997-05-20 | 1997-11-19 | $7700.00 | Window Closed / Lapsed |