Patent US4472257A successfully refreshed from Google Patents.
US4472257A
Expired / Lapsed
US
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Electrode for electrochemical processes and process for producing same
Assignee: Individual
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Filing: 1983-02-16
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Granted: 1984-09-18
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Expires: 2003-02-16
Abstract
Abstract An electrode for electrochemical processes comprising a graphite base having, in its pores, metals or compounds of metals possessing electrocatalytical properties and being in an electric contact with graphite; an electrochemically inert organic compound insoluble in the electrolyte and having its dropping point and/or the temperature of transition to the gas state exceeding the electrode temperature during electrolysis. A process for producing the electrode of the present invention comprises introduction, into the graphite base pores, successively metals or oxides of metals possessing electrocatalytic properties, and then an electrochemically inert organic compound insoluble in the electrolyte and having its dropping point and/or the temperature of transition to the gas stage exceeding the electrode temperature during electrolysis.
Inventors
- 👤 Alexandr T. Sklyarov
- 👤 Viktor P. Archakov
- 👤 Valentin I. Eberil
- 👤 Vladimir L. Kubasov
- 👤 Inna V. Borinevich
- 👤 Asya I. Marchenkova
- 👤 Vyacheslav S. Sitanov
- 👤 Vladimir I. Fisin
- 👤 Nikolai F. Mokhov
- 👤 Leonid Y. Tsybin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:20
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/04; C25B11/042; C25B11/043; C25B11/044
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
108 words
An electrode for the electrolysis of liquid electrolytes consisting of a porous graphite base having at least a portion of the pores of said base impregnated with a first layer of an electrocatalytic material comprising 0.2-8% of metals or metal compounds and being in electrical contact with said graphite and a second layer of an electrochemically inert organic compound insoluble in the electrolyte in which said electrode is utilized, said second layer covering said first layer and substantially filling the pores of said graphite base, said organic compound having a dropping point and/or a point of transition to the gas state above the electrode temperature during the electrolysis.
Claim 2
Dependent Claim
108 words
An electrode for the electrolysis of liquid electrolytes consisting of a porous graphite base having at least a portion of the pores of said base impregnated with a first layer of an electrocatalytic material comprising 0.2-8% of metals or metal compounds and being in electrical contact with said graphite and a second layer of an electrochemically inert organic compound insoluble in the electrolyte in which said electrode is utilized, said second layer covering said first layer and substantially filling the pores of said graphite base, said organic compound having a dropping point and/or a point of transition to the gas state above the electrode temperature during the electrolysis.
Claim 3
Dependent Claim
44 words
The electrode according to claim 1, wherein the organic compound comprises a substance selected from the group consisting of carbochain polymers, heterochain polymers, naturally-occurring and synthetic resins, bitumens, pitches, products of curing of curable oils and stand oils, and a mixture of said compounds.
Claim 4
Dependent Claim
55 words
The electrode for electrochemical processes according to claim 2, wherein use is made of a product selected from the group consisting of a product of curing of linseed oil, a product of curing of tall oil, a product of copolymerization of tall oil and linseed oil and a product of curing of tall stand oil.
Claim 5
Dependent Claim
24 words
An electrode for electrochemical processes, according to claim 2, which comprises use of a product selected from the group consisting of polymethylmethacrylate, and polyesteracrylate.
Claim 6
Dependent Claim
33 words
An electrode for electrochemical processes according to claim 2, which comprises use of a product selected from the group consisting of a phenol-formaldehyde resin, a furan resin, a polyester resin and an rosin.
Claim 7
Dependent Claim
27 words
An electrode for electrochemical processes according to claim 2, which comprises use of a product selected from the group consisting of oxidized petroleum bitumen and coal-tar pitch.
Claim 8
Dependent Claim
35 words
The electrode according to claim 2, wherein the carbochain polymer is a substance selected from the group consisting of polystyrene, polyethylene, polyvinylchloride, a mixture of polystyrene and polymethylmethacrylate and a mixture of polyethylene and paraffin.
Claim 9
Dependent Claim
13 words
The electrode according to claim 1, wherein said metal compounds are metal oxides.
Claim 10
Dependent Claim
25 words
The electrode according to claim 1, wherein said metals are selected from the group consisting of platinum, palladium, iridium, ruthenium and mixtures and alloys thereof.
Claim 11
Dependent Claim
54 words
The electrode according to claim 8, wherein said metal oxides are selected from the group consisting of oxides of platinum, palladium, iridium, ruthenium, iron, cobalt, nickel, chromium, copper, lead, manganese, mixtures thereof and mixtures thereof with metal oxides selected from the group consisting of oxides of titanium, tantalum zirconium, aluminum, bismuth, tungsten and niobium.
Claim 12
Dependent Claim
11 words
The electrode according to claim 9, wherein said metal is platinum.
Claim 13
Dependent Claim
13 words
An electrode according to claim 10, wherein said metal oxide is tricobalt tetraoxide.
Claim 14
Dependent Claim
19 words
An electrode according to claim 10, wherein said metal oxide is a mixture of oxides of ruthenium and titanium.
Claim 15
Dependent Claim
13 words
An electrode according to claim 10, wherein said metal oxide is ruthenium oxide.
Claim 16
Dependent Claim
109 words
An electrode for the electrolysis of liquid electrolytes consisting of a porous graphite base having at least a portion of the pores of said base impregnated with a first layer of an electrocatalytic material comprising 0.2-8% of a metal oxide and being in electrical contact with said graphite and a second layer of polystyrene being an electrochemically inert organic compound insoluble in the electrolyte in which said electrode is utilized, said second layer covering said first layer and substantially filling the pore of said graphite base, said organic compound having a dropping point and/or a point of transition to the gas state above the electrode temperature during the electrolysis.
Claim 17
Dependent Claim
109 words
An electrode for the electrolysis of liquid electrolytes consisting of a porous graphite base having at least a portion of the pores of said base impregnated with a first layer of an electrocatalytic material comprising 0.2-8% of a metal oxide and being in electrical contact with said graphite and a second layer of polystyrene being an electrochemically inert organic compound insoluble in the electrolyte in which said electrode is utilized, said second layer covering said first layer and substantially filling the pore of said graphite base, said organic compound having a dropping point and/or a point of transition to the gas state above the electrode temperature during the electrolysis.
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) | 1987-09-18 | 1988-03-19 | 1988-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-18 | 1992-03-19 | 1992-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-18 | 1996-03-19 | 1996-09-18 | $7700.00 | Window Closed / Lapsed |