Patent US3830725A successfully refreshed from Google Patents.
US3830725A
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Cracking hydrocarbons with catalysts containing nickel and magnesium exchanged zeolites
Assignee: WR Grace and Co Conn
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Filing: 1972-05-24
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Granted: 1974-08-20
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Expires: 1992-05-24
Abstract
Abstract Z-14 US ZEOLITE PROMOTERS FOR HYDROCARBON CRACKING CATALYSTS ARE EXCHANGED WITH A COMBINATION OF NICKEL AND MAGNESIUM IONS AND SUBSEQUENTLY CALCINED. CRACKING CATALYSTS CONTAINING THESE ZEOLITES ARE FOUND TO POSSESS INCREASED SELECTIVITY FOR THE PRODUCTION OF AROMATIC GASOLINES HAVING INCREASED NON-LEADED OCTANE RATINGS. FURTHERMORE, THE NICKEL AND MAGNESIUM EXCHANGED Z-14 US ZEOLITE MAY BE ADVANTAGEOUSLY COMBINED WITH RARE EARTH EXCHANGED FAUJASITE CONTAINING CATALYSTS.
Inventors
- 👤 G Dolbear
- 👤 J Magee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:17
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05; B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18; B01J20/186; B01J23/00; B01J23/16; B01J23/24; B01J23/30; B01J29/00; B01J29/04; B01J29/06; B01J29/08; B01J29/085; B01J29/088; B01J29/10; B01J29/106; B01J29/14; B01J29/146; B01J29/70; B01J29/72; B01J29/76; B01J29/80; B01J2229/00; B01J2229/10; B01J2229/26; B01J2229/30; B01J2229/36; B01J2229/42
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) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |