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US4363748A
Expired / Lapsed
US
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Catalyst composition for producing tertiary-butylstyrene
Assignee: El Paso Products Co
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Filing: 1982-02-02
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Granted: 1982-12-14
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Expires: 2002-02-02
Abstract
Abstract This invention provides an improved oxydehydrogenation process for the production of tertiary-butylstyrene which involves the contacting of a vapor phase mixture of tertiary-butylethylbenzene and oxygen with a novel coprecipitated aluminum-calcium-cerium phosphate catalyst composition. The tertiary-butylstyrene is produced with a high conversion selectivity, and concomitantly there is little or no dialkenylbenzene byproducts produced.
Inventors
- 👤 Glen F. Crum
- 👤 Samuel J. Paton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:17
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/16; B01J27/18; B01J27/1802; B01J27/1806; B01J23/00; B01J23/10; C; C07; C07C; C07C5/00; C07C5/42; C07C5/48
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
36 words
A coprecipitated catalyst composition adapted for oxydehydrogenation reactions, which catalyst composition corresponds to the formula: Al.sub.5-20 Ca.sub.5-20 Ce.sub.1 (PO.sub.4).sub.x wherein x is a number sufficient to satisfy the valences of the metal elements in the catalyst.
Claim 2
Dependent Claim
36 words
A coprecipitated catalyst composition adapted for oxydehydrogenation reactions, which catalyst composition corresponds to the formula: Al.sub.5-20 Ca.sub.5-20 Ce.sub.1 (PO.sub.4).sub.x wherein x is a number sufficient to satisfy the valences of the metal elements in the catalyst.
Claim 3
Dependent Claim
21 words
A coprecipitated catalyst composition in accordance with claim 1 wherein the cerium metal is substantially in the plus three valence state.
Claim 4
Dependent Claim
15 words
A coprecipitated catalyst composition in accordance with claim 1 in combination with a carrier substrate.
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) | 1985-12-13 | 1986-06-14 | 1986-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-13 | 1990-06-14 | 1990-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-13 | 1994-06-14 | 1994-12-14 | $7700.00 | Window Closed / Lapsed |