US4487669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for oxidation of an element in both compartments of an electrolytic cell
Assignee: Beazer East Inc
•
Filing: 1983-01-31
•
Granted: 1984-12-11
•
Expires: 2003-01-31
Abstract
Abstract A method of oxidizing an element in both compartments of an electrolytic cell is provided. The method comprises reducing O2 to H2O2 in the cathodic compartment with a reducing agent such as a cobalt porphyrin, cobalt phthalocyanine, or hydroquinone, and oxidizing the element in both compartments preferably in the presence of a halide. Yields of up to 200 percent are obtainable.
Inventors
- 👤 Theodore Kuwana
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:58
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/50; C25B1/01; C25B1/24; C25B3/00; C25B3/01; C25B3/11
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
50 words
A method of oxidizing an element in both compartments of an electrolytic cell which comprises reducing O 2 with a reducing agent contained in the cathode compartment to H 2 O 2 which H 2 O 2 oxidizes the element, and directly oxidizing the same element in the anode compartment.
Claim 2
Independent Claim
50 words
A method of oxidizing an element in both compartments of an electrolytic cell which comprises reducing O 2 with a reducing agent contained in the cathode compartment to H 2 O 2 which H 2 O 2 oxidizes the element, and directly oxidizing the same element in the anode compartment.
Claim 3
Dependent Claim
23 words
The process of claim 1 wherein a bromide or iodide is oxidized at the anode to form a bromine or iodine oxidizing agent.
Claim 4
Dependent Claim
9 words
The method of claim 2 wherein iodide is oxidized.
Claim 5
Dependent Claim
9 words
The method of claim 2 wherein bromide is oxidized.
Claim 6
Dependent Claim
18 words
The method of claim 1 wherein the reducing agent in the cathode compartment is affixed to the electrode.
Claim 7
Dependent Claim
18 words
The method of claim 1 wherein the reducing agent is selected from cobalt porphyrins, cobalt phthalocyanines and hydroquinones.
Claim 8
Dependent Claim
12 words
The method of claim 1 wherein the reducing agent is cobalt tetrakis[N-methyl-4-pyridyl]porphyrin.
Claim 9
Dependent Claim
13 words
The method of claim 1 wherein the reducing agent is cobalt tetrapyridyl porphyrin.
Claim 10
Dependent Claim
12 words
The method of claim 1 wherein the reducing agent is cobalt phthalocyanine.
Claim 11
Dependent Claim
13 words
The method of claim 1 wherein the reducing agent is cobalt tetrasulfonated phthalocyanine.
Claim 12
Dependent Claim
11 words
The method of claim 1 wherein the reducing agent is 1,4-dihydroxybenzene.
Claim 13
Dependent Claim
11 words
The method of claim 1 wherein the reducing agent is 1,4-dihydroxynaphthalene.
Claim 14
Dependent Claim
11 words
The method of claim 1 wherein the reducing agent is tetraphenylporphinecobalt.
Claim 15
Dependent Claim
28 words
The method of claim 1 wherein the anode and cathode compartments are separated by a membrane which is ion permeable but impermeable to solutions contained in the compartments.
Claim 16
Dependent Claim
22 words
The method of claim 14 wherein the membrane is a microporous laminate of a perflourosulfonic acid resin with a fabric of polytetrafluoroethylene.
Claim 17
Dependent Claim
29 words
The method of claim 1 wherein bromide is present and is oxidized to bromine which is removed by an inert gas and is reacted with cyclohexene to form dibromocyclohexane.
Claim 18
Dependent Claim
14 words
The method of claim 1 wherein a halide is present in the cathode compartment.
Claim 19
Dependent Claim
10 words
The method of claim 17 wherein the halide is bromide.
Claim 20
Dependent Claim
10 words
The method of claim 17 wherein the halide is iodide.
Claim 21
Dependent Claim
15 words
The method of claim 1 wherein the element is As(III) which is oxidized to As(V).
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) | 1987-12-11 | 1988-06-11 | 1988-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-11 | 1992-06-11 | 1992-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-11 | 1996-06-11 | 1996-12-11 | $7700.00 | Window Closed / Lapsed |