US3288724A
Expired / Lapsed
US
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Process for preparing a silicon carbide supported vanadium-containing oxidation catalyst
Assignee: Halcon Research and Development Corp
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Filing: 1965-05-14
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Granted: 1966-11-29
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Expires: 1985-05-14
Abstract
No abstract record available.
Inventors
- 👤 Joseph L Russell
- 👤 Becker Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:40
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/20; B01J23/22; C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/255; C07C51/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A PROCESS FOR PREPARING A SILICON CARBIDE SUPPORTED VANADIUM-CONTAINING HYDROCARBON OXIDATION CATALYST WHICH COMPRISES: COATING A SOLUTION CONTAINING A VANADIUM SALT CONVERTIBLE TO VANADIUM OXIDE ON A HIGH PURITY SILICON CARIBIDE SUPPORT HAVING LESS THAN 5% BINDER AND HAVING A SURFACE AREA OF LESS THAN ONE SQUARE METER PER GRAM BY CONTACTING SAID SUPPORT WITH SAID SOLUTION AT A TEMPERATURE OF FROM 90*C. TO 200*C. FOR A PERIOD OF FROM 1/2 TO 8 HOURS UNTIL THE SUPPORT REACHES A STATE OF DRYNESS WHEREBY A PROCELAIN SPATULA IS NO LONGER WETTED WHEN PLACED IN CONTACT THEREWITH, THE COATED SUPPORT HAVING A RATIO OF 1 PART BY WEIGHT OF OF VANADIUM SALT TO FROM 5-20 PARTS BY WEIGHT OF SUPPORT. COMMENCING FINAL DRYING OF THE COATED SUPPORT WITHIN 30 MINUTES AFTER THE SUPPORT REACHES SAID STATE OF DRYNESS BY RAISING THE TEMPERAAATURE OF THE SUPPORT TO FROM 260*C. TO 450*C. IN LESS THAN 30 MINUTES, AND CONTINUING THE HEATING WITHIN SAID TEMPERATURE RANGE TO COMPLETE DRYING.
Claim 2
Dependent Claim
164 words
A PROCESS FOR PREPARING A SILICON CARBIDE SUPPORTED VANADIUM-CONTAINING HYDROCARBON OXIDATION CATALYST WHICH COMPRISES: COATING A SOLUTION CONTAINING A VANADIUM SALT CONVERTIBLE TO VANADIUM OXIDE ON A HIGH PURITY SILICON CARIBIDE SUPPORT HAVING LESS THAN 5% BINDER AND HAVING A SURFACE AREA OF LESS THAN ONE SQUARE METER PER GRAM BY CONTACTING SAID SUPPORT WITH SAID SOLUTION AT A TEMPERATURE OF FROM 90*C. TO 200*C. FOR A PERIOD OF FROM 1/2 TO 8 HOURS UNTIL THE SUPPORT REACHES A STATE OF DRYNESS WHEREBY A PROCELAIN SPATULA IS NO LONGER WETTED WHEN PLACED IN CONTACT THEREWITH, THE COATED SUPPORT HAVING A RATIO OF 1 PART BY WEIGHT OF OF VANADIUM SALT TO FROM 5-20 PARTS BY WEIGHT OF SUPPORT. COMMENCING FINAL DRYING OF THE COATED SUPPORT WITHIN 30 MINUTES AFTER THE SUPPORT REACHES SAID STATE OF DRYNESS BY RAISING THE TEMPERAAATURE OF THE SUPPORT TO FROM 260*C. TO 450*C. IN LESS THAN 30 MINUTES, AND CONTINUING THE HEATING WITHIN SAID TEMPERATURE RANGE TO COMPLETE DRYING.
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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |