US4954474A
Expired / Lapsed
US
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Process for preparing catalysts by alloying metals on supports
Assignee: Tanaka Precious Metal Technologies Co Ltd
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Filing: 1989-02-17
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Granted: 1990-09-04
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Expires: 2009-02-17
Abstract
Abstract Disclosed herein is a process for alloying metals on inorganic supports comprising applying the solution of an organic acid amine salt of a second metal onto the inorganic supports already supported with a first metal; reducing the salt to the corresponding metal; and alloying the metals by heating. According to the present invention, the alloying of the metals can be performed at a relatively low temperature. Therefore, a highly active binary or ternary catalyst having a large surface area can be obtained.
Inventors
- 👤 Kazunori Tsurumi
- 👤 Toshihide Nakamura
- 👤 Akira Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:11
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/90; H01M4/92; H01M4/925; H01M4/926; B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J23/652; B01J23/6522; B01J23/70; B01J23/89; H01M2300/00; H01M2300/0002; H01M2300/0005; H01M2300/0008; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
48 words
A process for preparing catalysts by alloying metals on inorganic supports comprising: applying a solution of an organic acid amine salt of a second metal onto the inorganic supports already supported with a first metal; reducing the salt to the corresponding metal; and alloying the metals by heating.
Claim 2
Dependent Claim
48 words
A process for preparing catalysts by alloying metals on inorganic supports comprising: applying a solution of an organic acid amine salt of a second metal onto the inorganic supports already supported with a first metal; reducing the salt to the corresponding metal; and alloying the metals by heating.
Claim 3
Dependent Claim
14 words
A process as defined as claim 1, wherein the inorganic supports are carbon supports.
Claim 4
Dependent Claim
15 words
A process as defined as claim 1, wherein the inorganic supports are inorganic oxide supports.
Claim 5
Dependent Claim
33 words
A process as defined as claim 1, wherein the first metal is platinum and the second metal is one or more metals selected from the group consisting of nickel, cobalt, chromium and iron.
Claim 6
Dependent Claim
20 words
A process as defined as claim 1, wherein the organic amine salt is a formamide salt and/or an acetamide salt.
Claim 7
Dependent Claim
22 words
A process as defined as claim 1, wherein the reduction of the organic acid amine salt is performed in a hydrogen flow.
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) | 1993-09-03 | 1994-03-05 | 1994-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-03 | 1998-03-05 | 1998-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-03 | 2002-03-05 | 2002-09-04 | $7700.00 | Window Closed / Lapsed |