US4045373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation catalysts and process for preparing same
Assignee: Gulf Research and Development Co
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Filing: 1975-12-30
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Granted: 1977-08-30
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Expires: 1995-12-30
Abstract
Abstract Novel compounds particularly suitable as oxidation catalysts are prepared using critical amounts of uranium, antimony and tin.
Inventors
- 👤 Robert A. Innes
- 👤 Anthony J. Perrotta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:16
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/24; C07C253/26; B; B01; B01J; B01J23/00; B01J23/16; B01J23/18; C01; C01G; C01G43/00; C01G43/006; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/34; C07C45/35; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
54 words
A novel catalyst defined by the following stoichiometry: USb a Sn b O 8-12 , wherein a is the number about 2.5 to about 1.5 and b is the number about 0.5 to about 1.5, with the atomic ratio of the sum of antimony and tin to uranium being about 2.5:1 to about 3.5:1.
Claim 2
Dependent Claim
54 words
A novel catalyst defined by the following stoichiometry: USb a Sn b O 8-12 , wherein a is the number about 2.5 to about 1.5 and b is the number about 0.5 to about 1.5, with the atomic ratio of the sum of antimony and tin to uranium being about 2.5:1 to about 3.5:1.
Claim 3
Dependent Claim
108 words
A process for preparing a compound containing uranium, antimony and tin which comprises heating (1) oxides of uranium, antimony and tin, or (2) compounds of said elements that will decompose or be converted to said oxides during said heating, wherein the atomic ratio of antimony to uranium is about 2.5:1 to about 1.5:1, the atomic ratio of tin to uranium is about 0.5:1 to about 1.5:1 and the atomic ratio of the sum of antimony and tin to uranium is about 3.5:1 to about 2.5:1, in an atmosphere containing molecular oxygen at a temperature of at least about 800° C. for about 15 minutes to about 24 hours.
Claim 4
Dependent Claim
108 words
A process for preparing a compound containing uranium, antimony and tin which comprises heating (1) oxides of uranium, antimony and tin, or (2) compounds of said elements that will decompose or be converted to said oxides during said heating, wherein the atomic ratio of antimony to uranium is about 2.5:1 to about 1.5:1, the atomic ratio of tin to uranium is about 0.5:1 to about 1.5:1 and the atomic ratio of the sum of antimony and tin to uranium is about 3.5:1 to about 2.5:1, in an atmosphere containing molecular oxygen at a temperature of at least about 800° C. for about 15 minutes to about 24 hours.
Claim 5
Dependent Claim
51 words
The process of claim 2 wherein the atomic ratio of antimony to uranium is about 1.5:1 to about 2.5:1, the atomic ratio of tin to uranium is about 0.5:1 to about 1.5:1 and the atomic ratio of the sum of antimony and tin to uranium is about 3.3:1 to about 2.7:1.
Claim 6
Dependent Claim
24 words
The process of claim 2 wherein the temperature is about 875° to about 1000° C. and the time about one to about 18 hours.
Claim 7
Dependent Claim
24 words
The catalyst of claim 1 wherein the atomic ratio of the sum of antimony and tin to uranium is about 2.7:1 to about 3.3:1.
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) | 1980-08-29 | 1981-02-28 | 1981-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-29 | 1985-02-28 | 1985-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-29 | 1989-02-28 | 1989-08-30 | $7700.00 | Window Closed / Lapsed |