Patent US3929608A successfully refreshed from Google Patents.
US3929608A
Expired / Lapsed
US
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Catalytic material for electrodes
Assignee: Solvay SA
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Filing: 1973-08-27
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Granted: 1975-12-30
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Expires: 1993-08-27
Abstract
Abstract An improved electrode having an electroconductive metal support or core at least superficially made of titanium or a titanium alloy and a catalytic coating on the titanium metal surface including (a) at least one substance from the group consisting of the platinum group metals and their oxides and (b) an oxide of tellurium. This novel electrode is particularly adapted for use in the electrolysis of aqueous solution of alkali metal halides.
Inventors
- 👤 Louis Degueldre
- 👤 Yves Gobillon
- 👤 Lucien Clerbois
- 👤 Louis Bourgeois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:25
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/90; C; C25; C25B; C25B11/00; C25B11/04; C25B11/051; C25B11/073; C25B11/091; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
73 words
ELECTRODE FOR ELECTROCHEMICAL PROCESSES COMPRISING A CONDUCTIVE AND INERT SUBSTRATE AT LEAST SUPERFICIALLY COMPRISING TITANIUM OR A TITANIUM ALLOY AND A PROTECTIVE AND ELECTROCATALYTIC COATING COVERING AT LEAST A PART OF THE SURFACE OF SAID SUBSTRATE AND ADHERED TO SAID SURFACE, SAID COATING COMPRISING: A. AT LEAST ONE SUBSTANCE SELECTED FROM AMONG THE GROUP CONSISTING OF THE PLATINUM-GROUP METALS AND THEIR OXIDES, AND B. OXIDIZED TELLURIUM, THE ATOMIC RATIO OF B:A BEING 1:1-100.
Claim 2
Dependent Claim
73 words
ELECTRODE FOR ELECTROCHEMICAL PROCESSES COMPRISING A CONDUCTIVE AND INERT SUBSTRATE AT LEAST SUPERFICIALLY COMPRISING TITANIUM OR A TITANIUM ALLOY AND A PROTECTIVE AND ELECTROCATALYTIC COATING COVERING AT LEAST A PART OF THE SURFACE OF SAID SUBSTRATE AND ADHERED TO SAID SURFACE, SAID COATING COMPRISING: A. AT LEAST ONE SUBSTANCE SELECTED FROM AMONG THE GROUP CONSISTING OF THE PLATINUM-GROUP METALS AND THEIR OXIDES, AND B. OXIDIZED TELLURIUM, THE ATOMIC RATIO OF B:A BEING 1:1-100.
Claim 3
Dependent Claim
30 words
An electrode as claimed in claim 1, further containing (c) an oxidized metal selected from the group consisting of tungsten, molybdenum and chromium, the atomic ratio of b:c being 1:2-9.
Claim 4
Dependent Claim
16 words
An electrode as claimed in claim 1, containing iridium as an element of the platinum group.
Claim 5
Dependent Claim
37 words
An electrode as claimed in claim 1, further containing at least (d) one oxidized metal selected from the group consisting of Pb, Bi, Sb, Sn, Cd, Ti, Ta, and Nb, the atomic ratio of b:d being 1:1.5-4.
Claim 6
Dependent Claim
25 words
An electrode as claimed in claim 1, said at least one component being selected from the group consisting of the oxides of the platinum-group metals.
Claim 7
Dependent Claim
78 words
An electrode for the electrolysis of alkali metal chloride solutions, comprising a conductive and inert substrate at least superficially comprising titanium or a titanium alloy and a protective and electrocatalytic coating covering at least a part of the surface of said substrate and adhered to said surface, said coating comprising: (a) at least one component selected from the group consisting of the platinum-group metals and their oxides and (b) oxidized tellurium, the atomic ratio of b:a being 1:2-20.
Claim 8
Dependent Claim
78 words
An electrode for the electrolysis of alkali metal chloride solutions, comprising a conductive and inert substrate at least superficially comprising titanium or a titanium alloy and a protective and electrocatalytic coating covering at least a part of the surface of said substrate and adhered to said surface, said coating comprising: (a) at least one component selected from the group consisting of the platinum-group metals and their oxides and (b) oxidized tellurium, the atomic ratio of b:a being 1:2-20.
Claim 9
Dependent Claim
34 words
An electrode as claimed in claim 6, wherein said catalytic material further contains (c) an oxidized metal selected from the group consisting of tungsten, molybdenum, and chromium, the atomic ratio of b:c being 1:2-9.
Claim 10
Dependent Claim
20 words
An electrode as claimed in claim 6, wherein said catalytic material contains iridium as an element of the platinum group.
Claim 11
Dependent Claim
41 words
An electrode as claimed in claim 6, wherein said catalytic material further contains (d) at least one oxidized metal selected from the group consisting of Pb, Bi, Sb, Sn, Cd, Ti, Ta, and Nb, the atomic ratio of b:d being 2:3-8.
Claim 12
Dependent Claim
27 words
An electrode as claimed in claim 6, wherein said at least one component is selected from the group consisting of the oxides of the platinum group metals.
Claim 13
Dependent Claim
15 words
An electrode as claimed in claim 1 wherein the atomic ratio of b:a is 1:2-20.
Claim 14
Dependent Claim
15 words
An electrode as claimed in claim 1, wherein the atomic ratio of b:a is 1:2.5-20.
Claim 15
Dependent Claim
17 words
An electrode as claimed in claim 1, wherein the atomic ratio b:a is from 1:1.5 to 1:20.
References Cited (Backward Citations)
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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) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |