US3828101A
Expired / Lapsed
US
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Method of preparation of ferrite catalysts
Assignee: Texas Petrochemicals Corp
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Filing: 1971-08-26
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Granted: 1974-08-06
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Expires: 1991-08-26
Abstract
Abstract IMPROVED CATALYSTS FOR DEHYDROGENATION CAN BE PREPARED BY COPRECIPITATING THE METAL CONTAINING CATALYSIS FROM A SOLUTION OF METAL IONS IN THE PRESENCE OF A LOW MOLECULAR WEIGHT POLYHYDRIC MATERIAL SUCH AS PENTACEYTHRITOL. THE RESULT OF HAVING THE POLYHYDRIC MATERIAL PRESENT IS THAT THE PRECIPITATE HAS THE FORM OF A GELATINOUS PRECIPITATE OF IMPROVED PROCESSABILITY. THE CATALYST ITSELF IS MORE ACTIVE IN DEHYDROGENATIONS AND PHYSICALLY STRONGER THAN COMPARABLE CATALYST PREPARED BY CONVENTIONAL METHODS.
Inventors
- 👤 E Miklas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:29
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/02; B01J37/03; B01J23/00; B01J23/70; B01J23/76; C; C07; C07C; C07C5/00; C07C5/42; C07C5/48; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |