EP0029751A1
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EP
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Ion exchange membrane cell and electrolytic process using thereof
Assignee: AGC Inc
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Filing: 1980-11-27
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Granted: —
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Expires: 2000-11-27
Abstract
Abstract An ion exchange membrane cell comprises an anode (4), a cathode (5) an anode compartment and a cathode compartment formed by partitioning by an ion exchange membrane (1). A gas and liquid permeable porous non-electrode layer (2,3) is bonded at least one of surface of said ion exchange membrane. An ion exchange membrane (1) comprises a gas and liquid permeable porous non-electrode layer (2,3) which is bonded to at least one surface of said membrane (1). An aqueous solution of an alkali metal chloride is electrolyzed in an electrolytic cell comprising an anode (4), a cathode (5), an anode compartment and a cathode compartment formed by partitioning with an ion exchange membrane (1) wherein a gas and liquid permeable porous nonelectrode layer (2,3) is bonded to at least one of surfaces of said ion exchange membrane (1) and an aqueous solution of an alkali metal chloride is fed into said anode compartment to form chlorine on said anode and to form an alkali metal hydroxide in said cathode compartment.
Inventors
- 👤 Yoshio Oda
- 👤 Takeshi Morimoto
- 👤 Kohji Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 20:28
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/01; C25B1/34; C25B1/46; C25B11/00; C25B11/02; C25B9/00; C25B9/17; C25B9/19
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
57 words
1 . A ion exchange membrane cell which comprises an anode 14, a cathode 15, an anode compartment and a cathode compartment formed by partitioning by an ion exchange membrane 11; characterized in that a gas and liquid permeable porous non-electrode layer (12,13) is bonded to at least one of the surfaces of said ion exchange membrane.
Claim 2
Dependent Claim
57 words
1 . A ion exchange membrane cell which comprises an anode 14, a cathode 15, an anode compartment and a cathode compartment formed by partitioning by an ion exchange membrane 11; characterized in that a gas and liquid permeable porous non-electrode layer (12,13) is bonded to at least one of the surfaces of said ion exchange membrane.
Claim 3
Dependent Claim
25 words
An electrolytic cell according to Claim 1 characterized in that said porous non-electrode layer is made of an electrically non-conductive material which is electrochemically inactive.
Claim 4
Dependent Claim
30 words
An electrolytic cell according to Claim 1 characterized in that said porous non-electrode layer is made of an electrically conductive material which has a higher over-voltage than the electrode used.
Claim 5
Dependent Claim
31 words
An electrolytic cell according to Claim 2 or claim 3, characterized in that said porous non-electrode layer is formed by bonding said electrically non-conductive or conductive particles with a fluorinated polymer.
Claim 6
Dependent Claim
31 words
An electrolytic cell according to any preceding claim characterized in that said porous non- non-clectrode layer contains electrically non-conductive or conductive particles in an amount of 0.01 to 30 mg/cm .
Claim 7
Dependent Claim
43 words
A electrolytic cell according to any one of claims 1 to 3 characterized in that at least one of said anode 4 and said cathode 5 is brought into contact with said porous non-electrode layer 2,3 bonded to said ion exchange membrane 1.
Claim 8
Dependent Claim
41 words
A electrolytic cell according to any one of Claims 1 to 3 characterized in that at least one of said anode 14 and said cathode 15 is spaced from the porous non-electrode layer 12,13 bonded to said ion exchange membrane 11.
Claim 9
Dependent Claim
97 words
A process for electrolyzing an aqueous solution of an alkali metal chloride in an electrolytic cell comprising an anode 4, a cathode 5, an anode compartment and a cathode compartment formed by partitioning with an ion exchange membrane 1, characterized in that a gas and liquid permeable porous non-electrode layer 2,3 is bonded to at least one of the surfaces of said ion exchange membrane and an aqueous solution of an alkali metal chloride is fed into said anode compartment to form chlorine on said anode and to form an alkali metal hydroxide in said cathode compartment.
Claim 10
Dependent Claim
97 words
A process for electrolyzing an aqueous solution of an alkali metal chloride in an electrolytic cell comprising an anode 4, a cathode 5, an anode compartment and a cathode compartment formed by partitioning with an ion exchange membrane 1, characterized in that a gas and liquid permeable porous non-electrode layer 2,3 is bonded to at least one of the surfaces of said ion exchange membrane and an aqueous solution of an alkali metal chloride is fed into said anode compartment to form chlorine on said anode and to form an alkali metal hydroxide in said cathode compartment.
Claim 11
Dependent Claim
44 words
A process according to claim 8 characterized in that said porous non-electrode layer has a porosity of 10 to 99% and a thickness of 0.01 to 200 p and is formed by bonding electrically non-conductive, electro- chemically inactive particles with a fluorinated polymer binder.
Claim 12
Dependent Claim
49 words
A process according to claim 9 characterized in that said porous non-electrode layer has a porosity of 10 to 99% and thickness of 0.01 to 200 µ and is formed by bonding electrically conductive particles, which have a higher overvoltage than the electrode used, with a fluorinated polymer binder.
Claim 13
Dependent Claim
61 words
1 1 . A process according to any one of claims 8 to 10 characterized in that said electrolysis is performed by feeding an aqueous solution of an alkali metal chloride having a concentration of 2.5 5.0 N into said anode compartment at a temperature of 60 120 o C at a current density of 10 to 100 A/dm 2 .
Claim 14
Dependent Claim
28 words
An ion exchange membrane 1,11 characterized in that a gas and liquid permeable porous non-electrode layer 2,3,11,12 is bonded to at least one surface of said membrane 1,11.
Claim 15
Dependent Claim
28 words
An ion exchange membrane 1,11 characterized in that a gas and liquid permeable porous non-electrode layer 2,3,11,12 is bonded to at least one surface of said membrane 1,11.
Claim 16
Dependent Claim
42 words
An ion exchange membrane according to claim 12 characterized in that said porous non-electrode layer is made of an electrically non-conductive material which is electro-chemically inactive and has a porosity of 10 to 99% and a thickness of 0.01 to 200 p.
Claim 17
Dependent Claim
52 words
An ion exchange membrane according to claim 12 characterized in that said porous non-electrode layer is made of an electrically conductive material which has a higher overvoltage than the electrode used for electrolysis with the membrane and has a porosity of 10 to 99% and a thickness of 0.01 to 200 µ.
References Cited (Backward Citations)
DE2652542A1
Cited
US4100113A
Cited
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