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4272338 |
Process for the treatment of anolyte brine
A process for removing dissolved halogen gas and oxyhalide ions from an aqueous alkali metal halide solution containing them which comprises reacting said aqueous alkali metal halide solution with...
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4270996 |
Cation exchange membrane of fluorinated polymer for electrolysis and electrolysis using the membrane
A cation exchange membrane of a fluorinated polymer used for an electrolysis of an alkali metal chloride is obtained by treating a cation exchange membrane having ion exchange groups of --COOM (M...
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4265719 |
Electrolysis of aqueous solutions of alkali-metal halides employing a flexible polymeric hydraulically-impermeable membrane disposed against a roughened surface cathode
Cell and process for operating chlor-alkali brine electrolysis cell which contains an anode, a cathode, and a non-rigid permionic membrane. Non-rigid, non-impregnated membrane is disposed against...
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4261803 |
Electrolysis of aqueous solution of potassium chloride
An electrolysis of an aqueous solution of potassium chloride is carried out by employing a fluorinated cation exchange membrane having an ion-exchange capacity of 0.8 to 2.0 meq/g dry polymer and...
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4253924 |
Solid polymer electrolyte chlor-alkali process
Disclosed is a solid polymer electrolyte electrolytic cell where one member of the anode cathode electrode pair forms a solid polymer electrolyte with a permionic membrane, and the opposite member...
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4253923 |
Electrolytic process for producing potassium hydroxide
Current efficiency in an electrolytic membrane cell for the production of concentrated potassium hydroxide is considerably increased by employing in the electrolytic membrane cell a membrane...
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4248679 |
Electrolysis of alkali metal chloride in a cell having a nickel-molybdenum cathode
Disclosed herein is a cathode having an electroconductive substrate and a porous surface. The porous surface is characterized by containing a major portion of nickel and a hydrogen overvoltage...
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4248680 |
Electrolytic process and apparatus
Disclosed is an electrolytic cell having an anode, a cathode, and a synthetic fluoro-carbon-resin permionic membrane between the anode and cathode. The improvement is characterized by the...
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4244793 |
Brine electrolysis using fixed bed oxygen depolarized cathode chlor-alkali cell
Disclosed is a method of electrolyzing alkali metal chloride brine between an anode and a cathode, with oxidant feed to the cathode, where the cathode is a bed of porous particles having HO 2 31 ...
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4242184 |
Membrane cell chlor-alkali process having improved overall efficiency
A process for the preparation of an alkali metal hydroxide and halogen from an alkali metal halide in a plurality of electrolytic cells, wherein each electrolytic cell is physically arranged in...
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4233122 |
Electrolytic process for potassium hydroxide
Improved current efficiency is obtained in an electrolytic membrane cell for the production of potassium hydroxide by employing in combination: (a) a membrane comprised of a carboxylic acid...
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4181586 |
Cathode electrocatalyst
Disclosed is an electrode having a substrate with an electrically active surface film. The film has a relatively imporous, dense portion in contact with the substrate and containing cobalt,...
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4174266 |
Method of operating an electrolytic cell having an asbestos diaphragm
Disclosed is an electrolysis cell and method of operation in which metal anodes (preferably titanium) provided with an electrically conducting electrocatalytic coating in an anode compartment face...
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4135995 |
Method of electrolysis, and electrode for the electrolysis
Disclosed is a method of conducting electrolysis by passing an electrical current from an anode through an aqueous electrolyte to a cathode where the cathode is an intercalation compound of carbon...
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4125450 |
Previous diaphragms for cells for the electrolysis of aqueous solutions of alkali metal halides
Pervious diaphragms for cells for the electrolysis of aqueous solutions of alkali metal halides and the method of manufacture thereof are disclosed; the pervious diaphragms comprise inorganic...
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4101394 |
Electrolytic method
Disclosed is a method of reducing the cathodic voltage of an electrolytic cell while electrolytically producing alcohols, aldehydes, acids, and ketones from peroxy bond-containing organic compounds...
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4075068 |
Process for the recovery of aluminum from alunite
An improvement in the process for the recovery of aluminum from alunite in which potassium hydroxide is recovered from byproduct potassium sulfate by electrodialysis, further improvement being the...
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4062743 |
Electrolytic process for potassium hydroxide
Current efficiency in an electrolytic membrane cell for the production of potassium hydroxide from aqueous solutions of KCl is considerably increased by maintaining the anolyte concentration of KCl...
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4055475 |
Method for operating electrolytic diaphragm cells
The electrolysis of alkali metal chloride solutions in a diaphragm cell having an anode compartment separated from a cathode compartment by a porous perfluorosulfonic acid resin diaphragm is...
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4040918 |
Method of activating an anode
Disclosed is an improved method of conducting electrolysis where a first electrode and a second electrode are inserted in an electrolyte, and an electrical current passes from one of the electrodes...
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3974058 |
Ruthenium coated cathodes
Composite cathodes comprising a metal substrate having thereon an intermediate coating of cobalt and an overcoating of ruthenium for use in electrolytic cells for the electrolysis of aqueous alkali...
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3963592 |
Method for the electrolytic production of alkali
A method whereby an alkali, such as an alkali metal hydroxide, is produced at the cathode by the electrolysis of aqueous alkali metal halide solutions and the process is operated to produce either...
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3941667 |
Method for the reprocessing of cell liquor from diaphragm cell electrolysis plants
A method for the reprocessing of cell liquor from diaphragm cell electrolysis plants that operate on potassium chloride brine. The cell liquor is contacted with an SO 2 -bearing gas, and the...
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3901774 |
Method of electrolyzing alkali metal halide solution and apparatus therefor
A method for electrolyzing an alkali metal halide solution using a horizontal diaphragm electrolytic cell, wherein a diaphragm having a water-permeability of not more than 0.02 ml/cm 2 .cm H 2 ...
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3668087 |
BRINE DECHLORINATION
In the vacuum dechlorination of acidic alkali metal chloride brine effluent from a mercury cathode electrolytic cell, chlorine is recovered and an effluent environmentally acceptable is produced...
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3420757 |
MERCURY CATHODE ELECTROLYSIS
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3282834 |
Process for reversible electrodialysis
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3242059 |
Electrolytic process for production of chlorine and caustic
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3213006 |
Electrolytic process for the recovery of mercury
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2827426 |
Cationic permselective membranes and their use in electrolysis
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2824054 |
Process and apparatus for the manufacture of solutions of alkali metal hydroxides
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3723266 |
Title is not available
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3836442 |
Title is not available
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3691036 |
Title is not available
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3677917 |
Title is not available
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3764495 |
Title is not available
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