US3882223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for catalytically decomposing a solution for generating oxygen therefrom
Assignee: Acorn Associates Inc
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Filing: 1973-08-06
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Granted: 1975-05-06
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Expires: 1993-08-06
Abstract
Abstract In the catalytic decomposition of hydrogen peroxide, nitric acid or acetic acid is added to the hydrogen peroxide in order to minimize catalyst degradation and to provide an improved oxygen production rate. For use in the areation of water in aquariums or minnow buckets, means are provided for adjusting the rate of oxygen production in accordance with temperature.
Inventors
- 👤 Paul W Reinhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:31
CPC Classifications
C; C01; C01B; C01B13/00; C01B13/02; C01B13/0203; C01B13/0211; C01B13/0214
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
108 words
A METHOD OF GENERATING OXYGEN COMPRISING PROVIDING A WATER-BASED SOLUTION OF HYDROGEN PEROXIDE AND AN ACID WHICH REACTS WITH LEAD OXIDE TO FORM A REACTION PRODUCT SELECTED FROM THE GROUP CONSISTING OF WATER SOLUBLE LEAD SALTS, WATER, GASES INNOCUOUS TO ANIMAL LIFE AND MIXTURES THEREOF; PLACING A HYDROGEN PEROXIDE DECOMPOSITION CATLAYST COMPRISING AN EFFECTIVE QUANTITY OF CATALYTICALLY ACTIVE ELEMENTAL LEAD IN CONTACT WITH THE SOLUTION; RECOVERING OXYGEN FROM THE SOLUTION; AND MINIMIZING DEGRADATION OF CATALYST PERFORMANCE COMPRISING THE CONCURRENT STEPS OF REACTING THE CATALYTIC ELEMENTAL LEAD WITH PRODUCED OXYGEN TO FORM LEAD OXIDE AND REMOVING THE LEAD OXIDE FROM THE CATALYST BY REACTING THE SAME WITH THE ACID.
Claim 2
Independent Claim
108 words
A METHOD OF GENERATING OXYGEN COMPRISING PROVIDING A WATER-BASED SOLUTION OF HYDROGEN PEROXIDE AND AN ACID WHICH REACTS WITH LEAD OXIDE TO FORM A REACTION PRODUCT SELECTED FROM THE GROUP CONSISTING OF WATER SOLUBLE LEAD SALTS, WATER, GASES INNOCUOUS TO ANIMAL LIFE AND MIXTURES THEREOF; PLACING A HYDROGEN PEROXIDE DECOMPOSITION CATLAYST COMPRISING AN EFFECTIVE QUANTITY OF CATALYTICALLY ACTIVE ELEMENTAL LEAD IN CONTACT WITH THE SOLUTION; RECOVERING OXYGEN FROM THE SOLUTION; AND MINIMIZING DEGRADATION OF CATALYST PERFORMANCE COMPRISING THE CONCURRENT STEPS OF REACTING THE CATALYTIC ELEMENTAL LEAD WITH PRODUCED OXYGEN TO FORM LEAD OXIDE AND REMOVING THE LEAD OXIDE FROM THE CATALYST BY REACTING THE SAME WITH THE ACID.
Claim 3
Dependent Claim
11 words
The method of claim 1 wherein the acid is nitric acid.
Claim 4
Dependent Claim
19 words
The method of claim 2 wherrein the nitric acid is in the range 10-500 ppm by weight hydrogen peroxide.
Claim 5
Dependent Claim
27 words
The method of claim 3 wherein the catalyst is 6-7% sb, balance lead and the nitric acid is in the range 20-110 ppm by weight hydrogen peroxide.
Claim 6
Dependent Claim
11 words
The method of claim 1 wherein the acid is acetic acid.
Claim 7
Dependent Claim
20 words
The method of claim 5 wherein the acetic acid is in the range of 5-200 ppm by weight hydrogen peroxide.
Claim 8
Dependent Claim
25 words
The method of claim 5 wherein the catalyst is Wood''s metal and the acetic acid is in the range 5-50 ppm by weight hydrogen peroxide.
Claim 9
Dependent Claim
22 words
The method of claim 1 wherein the acid is selected from the group consisting of acetic acid, nitric acid and mixtures thereof.
Claim 10
Independent Claim
97 words
A method of generating oxygen comprising providing a catalytically decomposable water-based hydrogen peroxide solution; placing an elemental lead decomposition catalyst which reacts with produced oxygen to form lead oxide in contact with the solution and recovering oxygen from the solution; the improvement in minimizing degradation of catalyst performance and in increasing instantaneous oxygen production rate throughout a production period of 0-8 hours comprising adding to the solution an acid which reacts with lead oxide to produce reaction products selected from the group consisting of water soluble lead salts, water, gases innocuous to animal life and mixtures thereof.
Claim 11
Independent Claim
97 words
A method of generating oxygen comprising providing a catalytically decomposable water-based hydrogen peroxide solution; placing an elemental lead decomposition catalyst which reacts with produced oxygen to form lead oxide in contact with the solution and recovering oxygen from the solution; the improvement in minimizing degradation of catalyst performance and in increasing instantaneous oxygen production rate throughout a production period of 0-8 hours comprising adding to the solution an acid which reacts with lead oxide to produce reaction products selected from the group consisting of water soluble lead salts, water, gases innocuous to animal life and mixtures thereof.
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) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |