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US4457813A Expired / Lapsed US ⏱️ 0.0 years remaining

Electrolysis cells and electrolytic processes

Assignee: Monsanto Co
•
Filing: 1983-03-04
•
Granted: 1984-07-03
•
Expires: 2003-03-04
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Abstract

Abstract Electrolytic processes in which separate useful reactions are conducted at an anode and cathode, respectively, by electrolysis of an anolyte at an anode and a catholyte at the cathode wherein the anolyte and catholyte are of different composition and are prevented from contacting the cathode and anode, respectively, during electrolysis without the use of selective permeable membranes or permeable partitions.

Inventors

  • 👤 Thomas E. Rogers
  • 👤 Robert E. Jansson
  • 👤 Manuel M. Baizer

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 22:54
CPC Classifications
C; C25; C25B; C25B3/00; C25B3/20; C25B3/29; C25B3/01; C25B3/07; C25B9/00; C25B9/13; C25B9/17

Claims Analysis

Total Claims: 13
Claim 1
Independent Claim 117 words
A process of carrying out useful electrolytic reactions simultaneously at an anode and cathode which comprises supplying a catholyte containing a compound to be reduced electrolytically to a cathode in a diaphragmless cell, supplying an anolyte containing a compound to be oxidized electrolytically to the anode in said cell, while imposing an electric current on said anode and cathode of said cell in an amount, rate and location of said cell sufficient to prevent the anolyte from substantially contacting the cathode and to prevent substantially the catholyte from from contacting the anode, and effecting oxidation of the said compound to be oxidized and reduction of the said compound to be reduced in separate useful simultaneous electrolytic reactions.
Claim 2
Dependent Claim 117 words
A process of carrying out useful electrolytic reactions simultaneously at an anode and cathode which comprises supplying a catholyte containing a compound to be reduced electrolytically to a cathode in a diaphragmless cell, supplying an anolyte containing a compound to be oxidized electrolytically to the anode in said cell, while imposing an electric current on said anode and cathode of said cell in an amount, rate and location of said cell sufficient to prevent the anolyte from substantially contacting the cathode and to prevent substantially the catholyte from from contacting the anode, and effecting oxidation of the said compound to be oxidized and reduction of the said compound to be reduced in separate useful simultaneous electrolytic reactions.
Claim 3
Dependent Claim 20 words
A process as in claim 1, in which the cell is provided with a porous anode and a porous cathode.
Claim 4
Dependent Claim 33 words
A process as in claim 2, in which the cell is also provided with a cell frame which substantially prevents intermingling of the anolyte contacting the anode and the catholyte contacting the cathode.
Claim 5
Dependent Claim 167 words
A process of carrying out useful electrolytic reactions simultaneously at an anode and cathode which comprises supplying a catholyte containing a compound to be reduced electrolytically to a porous cathode in a diaphragmless cell, supplying an anolyte containing a compound to be oxidized electrolytically to a porous anode in said cell, while imposing an electric current on said anode and cathode of said cell in an amount, rate and location of said cell sufficient to prevent the anolyte from substantially contacting the cathode and to prevent substantially the catholyte from contacting the anode, said process being further characterized in that the cell is provided with a frame which substantially prevents intermingling of the anolyte contacting the anode and the catholyte contacting the cathode, and the catholyte contains an activated olefin to be electrolytically converted to a hydrodimer of said olefin and the anolyte contains the mono alkyl ester of an alkyl dioic acid to be converted to the dialkyl ester of the decarboxylated dimer of said acid.
Claim 6
Dependent Claim 167 words
A process of carrying out useful electrolytic reactions simultaneously at an anode and cathode which comprises supplying a catholyte containing a compound to be reduced electrolytically to a porous cathode in a diaphragmless cell, supplying an anolyte containing a compound to be oxidized electrolytically to a porous anode in said cell, while imposing an electric current on said anode and cathode of said cell in an amount, rate and location of said cell sufficient to prevent the anolyte from substantially contacting the cathode and to prevent substantially the catholyte from contacting the anode, said process being further characterized in that the cell is provided with a frame which substantially prevents intermingling of the anolyte contacting the anode and the catholyte contacting the cathode, and the catholyte contains an activated olefin to be electrolytically converted to a hydrodimer of said olefin and the anolyte contains the mono alkyl ester of an alkyl dioic acid to be converted to the dialkyl ester of the decarboxylated dimer of said acid.
Claim 7
Dependent Claim 20 words
A process as in claim 1, in which the cell is provided with one porous electrode and one planar electrode.
Claim 8
Dependent Claim 48 words
A process as in claim 1, in which the cell is provided with a planar anode and a planar cathode, and the anolyte is supplied to the anode just before the upstream edge thereof and the catholyte is supplied to the cathode just before the upstream edge thereof.
Claim 9
Dependent Claim 103 words
A process of carrying out electrolytic reactions simultaneously at an anode and cathode which comprises supplying a catholyte containing an activated olefin to be dimerized to a porous cathode in a diaphragmless cell, supplying an anolyte containing the mono alkyl ester of an alkyl dioic acid to a porous anode of said cell, while imposing an electric current on the anode and cathode of said cell, and supplying a solvent electrolyte to said cell in an amount, rate and location of said cell sufficient to prevent substantially the catholyte from contacting the anode and to prevent substantially the anolyte from contacting the cathode.
Claim 10
Dependent Claim 103 words
A process of carrying out electrolytic reactions simultaneously at an anode and cathode which comprises supplying a catholyte containing an activated olefin to be dimerized to a porous cathode in a diaphragmless cell, supplying an anolyte containing the mono alkyl ester of an alkyl dioic acid to a porous anode of said cell, while imposing an electric current on the anode and cathode of said cell, and supplying a solvent electrolyte to said cell in an amount, rate and location of said cell sufficient to prevent substantially the catholyte from contacting the anode and to prevent substantially the anolyte from contacting the cathode.
Claim 11
Dependent Claim 32 words
A process as in claim 7 in which said activated olefin is selected from the group consisting of acrylonitrile and lower alkyl acrylate and said monoalkyl ester is the mono methyl adipate.
Claim 12
Dependent Claim 30 words
A process as in claim 8, in which the cell is also provided with a cell frame which substantially prevents intermingling of product streams from the anode and the cathode.
Claim 13
Dependent Claim 33 words
The process of claim 1 in which the stated useful electrolytic reactions cannot effectively be carried out while substantially avoiding the formation of undesirable by-products, by general electrolysis procedures in an undivided cell.

References Cited (Backward Citations)

US2055962A Cited
US3288692A Cited
US3427235A Cited
US3728233A Cited
US3660255A Cited
US4191619A Cited
US4256551A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1987-07-03 1988-01-02 1988-07-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1991-07-03 1992-01-02 1992-07-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1995-07-03 1996-01-02 1996-07-03 $7700.00 Window Closed / Lapsed

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