US3736265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized palladium-carbon catalysts
Assignee: Texaco Inc
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Filing: 1970-11-06
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Granted: 1973-05-29
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Expires: 1990-11-06
Abstract
Abstract A GROUP VII-B OR VIII METAL ON CARBON CATALYST IS STABILIZED BY HEATING THE CATALYST AT A TEMPERATURE OF FROM 500 TO 1200*F. IN ANON-OXIDIZING ATMOSPHERE. THE HEAT TREATED COMPOSITION IS PROVIDED WITH STABILIZED ACTIVITY AND IMPROVED CRUSH STRENGTH IN LOWTEMPERATURE CATALYTIC REACTIONS INVOLVING THE REDUCTION OF NITRATED OR OXYGENATED HYDROCARBONS TO AMINES AND ALCOHOLS WHERE COPIOUS AMOUNTS OF BY-PRODUCT WATER IS FORMED AND IS PARTICULARLY SUITED FOR UTLIZATION AS A HYDROGENATION CATALYST SUCH AS IN THE SELECTIVE CONVERSION OF MONONITROPARAFFINS TO SECONDARY ALKYL PRIMARY AMINES.
Inventors
- 👤 R Suggitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:21
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/44; B01J23/16; B01J23/32; B01J23/36; B01J23/42; B01J27/00; B01J27/20; B01J27/22; B01J21/00; B01J21/18; B01J37/00; B01J37/02; B01J37/0201; Y; Y10; Y10S; Y10S502/00; Y10S502/50; Y10S502/503
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |