US3931395A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for generating hydrogen gas
Assignee: SCHRIPTEK RECOVERY SYSTEMS INTERNATIONAL Inc A CORP OF NY
•
Filing: 1974-06-28
•
Granted: 1976-01-06
•
Expires: 1994-06-28
Abstract
Abstract Solid compositions, stable at ambient temperatures, which generate hydrogen gas when heated to initiate the reaction between the components of the composition.
Inventors
- 👤 Werner F. Beckert
- 👤 Ottmar H. Dengel
- 👤 Rodger W. McKain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:37
CPC Classifications
C; C01; C01B; C01B3/00
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
171 words
A method for generating hydrogen gas which comprises heating a composition comprising the intimate mixture in the solid state of at least one compound having the general formula (NH 4 ) n X wherein X is an inorganic acid group and n is the valency of said inorganic acid group and at least one compound having the general formula Y(ZH 4 ) m wherein Y is a mono- or divalent metal capable of forming complex hydrides and is selected from the group consisting of alkali metals and alkaline earth metals, m is the valency of said mono- or divalent metal and Z is a trivalent metal capable of forming complex hydrides and is selected from the group consisting of boron and aluminum, wherein said compounds are present in about stoichiometric amounts or are present in amounts such that there is a stoichiometirc excess of one of the components, to a temperature high enough that said Y(ZH 4 ) m reacts with said (NH 4 ) n X to produce hydrogen gas.
Claim 2
Independent Claim
171 words
A method for generating hydrogen gas which comprises heating a composition comprising the intimate mixture in the solid state of at least one compound having the general formula (NH 4 ) n X wherein X is an inorganic acid group and n is the valency of said inorganic acid group and at least one compound having the general formula Y(ZH 4 ) m wherein Y is a mono- or divalent metal capable of forming complex hydrides and is selected from the group consisting of alkali metals and alkaline earth metals, m is the valency of said mono- or divalent metal and Z is a trivalent metal capable of forming complex hydrides and is selected from the group consisting of boron and aluminum, wherein said compounds are present in about stoichiometric amounts or are present in amounts such that there is a stoichiometirc excess of one of the components, to a temperature high enough that said Y(ZH 4 ) m reacts with said (NH 4 ) n X to produce hydrogen gas.
Claim 3
Dependent Claim
15 words
A method according to claim 1 wherein said compounds are present in about stoichiometric amounts.
Claim 4
Dependent Claim
21 words
A method according to claim 2 wherein said inorganic acid group is selected from the group consisting of halogen and sulfate.
Claim 5
Dependent Claim
25 words
A method according to claim 1 wherein said compounds are present in amounts such that there is a stoichiometric excess of one of the components.
Claim 6
Dependent Claim
21 words
A method according to claim 4 wherein said inorganic acid group is selected from the group consisting of halogen and sulfate.
Claim 7
Dependent Claim
53 words
A method according to claim 5 wherein the mixture comprises at least one compound selected from the group consisting of NH 4 F and NH 4 Cl in combination with at least one compound selected from the group consisting of LiAlH 4 , NaAlH 4 , NaBH 4 , and LiBH 4 .
Claim 8
Dependent Claim
17 words
A method according to claim 6 using a mixture comprising NH 4 Cl and NaAlH 4 .
Claim 9
Independent Claim
17 words
A method according to cliam 6 using a mixture comprising NH 4 Cl and LiAlH 4 .
Claim 10
Independent Claim
17 words
A method according to cliam 6 using a mixture comprising NH 4 Cl and LiAlH 4 .
Claim 11
Dependent Claim
17 words
A method according to claim 6 using a mixture comprising NH 4 F and LiAlH 4 .
Claim 12
Dependent Claim
17 words
A method according to claim 6 using a mixture comprising NH 4 F and NaBH 4 .
Claim 13
Dependent Claim
22 words
A method according to claim 6 using a mixture comprising NH 4 F, NH 4 Cl, LiAlH 4 and NaBH 4 .
Claim 14
Dependent Claim
53 words
A method according to claim 3 wherein the mixture comprises at least one compound selected from the group consisting of NH 4 F and NH 4 Cl in combination with at least one compound selected from the group consisting of LiAlH 4 , NaAlH 4 , NaBH 4 , and LiBH 4 .
Claim 15
Dependent Claim
17 words
A method according to claim 12 using a mixture comprising NH 4 F and LiAlH 4 .
Claim 16
Dependent Claim
17 words
A method according to claim 12 using a mixture comprising NH 4 Cl and NaAlH 4 .
Claim 17
Dependent Claim
17 words
A method according to claim 12 using a mixture comprising Nh 4 F and NaBH 4 .
Claim 18
Dependent Claim
17 words
A method according to claim 12 using a mixture comprising NH 4 Cl and LiAlH 4 .
Claim 19
Dependent Claim
22 words
A method according to claim 12 using a mixture comprising NH 4 F, NH 4 Cl, LiAlH 4 and NaBH 4 .
Claim 20
Dependent Claim
31 words
The method of claim 1 wherein at least one component of the mixture is coated with a polymer selected from the group consisting of polystyrene, polyethylene, polybutadiene, polycarbonate and hydroxyvinyl resins.
Claim 21
Independent Claim
150 words
A method for generating hydrogen gas comprising heating a composition comprising: the intimate mixture in the solid state of at least one compound having the general formula (N 2 H 6 ) n X 2 wherein X is an inorganic acid group and n is the valency of said inorganic acid group and at least one compound having the general formula Y(ZH 4 ) m wherein Y is a mono- or divalent metal capable of forming complex hydrides and is selected from the group consisting of alkali metals and alkaline earth metals, m is the valency of said mono- or divalent metal and Z is a trivalent metal capable of forming complex hydrides and is selected from the group consisting of boron and aluminum to a temperature high enough that said Y(ZH 4 ) m reacts with said (N 2 H 6 ) n X 2 to produce hydrogen gas.
Claim 22
Independent Claim
150 words
A method for generating hydrogen gas comprising heating a composition comprising: the intimate mixture in the solid state of at least one compound having the general formula (N 2 H 6 ) n X 2 wherein X is an inorganic acid group and n is the valency of said inorganic acid group and at least one compound having the general formula Y(ZH 4 ) m wherein Y is a mono- or divalent metal capable of forming complex hydrides and is selected from the group consisting of alkali metals and alkaline earth metals, m is the valency of said mono- or divalent metal and Z is a trivalent metal capable of forming complex hydrides and is selected from the group consisting of boron and aluminum to a temperature high enough that said Y(ZH 4 ) m reacts with said (N 2 H 6 ) n X 2 to produce hydrogen gas.
Claim 23
Dependent Claim
20 words
The method of claim 19 wherein said inorganic acid group is selected from the group consisting of halogen and sulfate.
Claim 24
Dependent Claim
20 words
A method according to claim 20 using a mixture comprising N 2 H 6 Cl 2 and LiBH 4 .
Claim 25
Dependent Claim
31 words
The method of claim 19 wherein at least one component of the mixture is coated with a polymer selected from the group consisting of polystyrene, polyethylene, polybutadiene, polycarbonate and hydroxyvinyl resins.
Claim 26
Independent Claim
188 words
A method of generating hydrogen gas comprising heating a composition comprising the intimate mixture in the solid state of at least one compound having the general formula (NH 4 ) n X wherein X is an inorganic acid group and n is the valency of said inorganic acid group, at least one compound having the general formula (N 2 H 6 ) n X 2 wherein X is an inorganic acid group and n is the valency of said inorganic acid group, and at least one compound having the general formula Y(ZH 4 ) m wherein Y is a mono- or divalent metal capable of forming complex hydrides and is selected from the group consisting of alkali metals and alkaline earth metals, m is the valency of said mono- or divalent metal, and Z is a trivalent metal capable of forming complex hydrides and is selected from the group consisting of boron and aluminum to a temperature high enough that said Y(ZH 4 ) m reacts with said (NH 4 ) n X and with said (N 2 H 6 ) n X 2 to produce hydrogen gas.
Claim 27
Independent Claim
188 words
A method of generating hydrogen gas comprising heating a composition comprising the intimate mixture in the solid state of at least one compound having the general formula (NH 4 ) n X wherein X is an inorganic acid group and n is the valency of said inorganic acid group, at least one compound having the general formula (N 2 H 6 ) n X 2 wherein X is an inorganic acid group and n is the valency of said inorganic acid group, and at least one compound having the general formula Y(ZH 4 ) m wherein Y is a mono- or divalent metal capable of forming complex hydrides and is selected from the group consisting of alkali metals and alkaline earth metals, m is the valency of said mono- or divalent metal, and Z is a trivalent metal capable of forming complex hydrides and is selected from the group consisting of boron and aluminum to a temperature high enough that said Y(ZH 4 ) m reacts with said (NH 4 ) n X and with said (N 2 H 6 ) n X 2 to produce hydrogen gas.
Claim 28
Dependent Claim
23 words
The method of claim 23 wherein said inorganic acid group in both occurrences is selected from the group consisting of halogen and sulfate.
Claim 29
Dependent Claim
28 words
A method according to claim 24 using a mixture which comprises N 2 H 6 Cl 2 , NH 4 F, LiAlH 4 , and NaBH 4 .
Claim 30
Dependent Claim
31 words
The method of claim 23 wherein at least one component of the mixture is coated with a polymer selected from the group consisting of polystyrene, polyethylene, polybutadiene, polycarbonate and hydroxyvinyl resins.
References Cited (Backward Citations)
US3419361A
Cited
US3734863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-05 | 1979-07-07 | 1980-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-05 | 1983-07-07 | 1984-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-05 | 1987-07-07 | 1988-01-06 | $7700.00 | Window Closed / Lapsed |