US3830866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the catalytic conversion of olefins to aromatics
Assignee: Atlantic Richfield Co
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Filing: 1973-05-31
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Granted: 1974-08-20
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Expires: 1993-05-31
Abstract
Abstract OLEFINS HAVING AN ALLYL HYDROGEN ARE CONVERTED TO AROMATICS BY CONTACTING THEM WITH AN INTIMATE MIXING OF A DEHYDRODIOERIZATION AGENT AND AN AROMATIZATION CATALYST AT A TEMPERATURE OF FROM 400*C. TO 650*C. THE DEHYDRODIMERIZATION AGENT IS AN OXIDE OF BISMUTH, LEAD OR ANTIMONY, AND THE AROMATIZATION CATALYST IS A METAL SUCH AS SUPPORTED PLATINUM, PALLADIUM OR COBALT, OR METAL OXIDE SUCH AS CHROMIA-ALUMINA, COBALT MOLYBDATE, MAGNESIA, TIN OXIDE OR ZINC OXIDE. THE ADVANTAGE FOR THE PROCESS IS HIGH SELECTIVITY FOR THE SPECIFIC AROMATIC OR AROMATICS OBTAINABLE FROM EACH OLEFIN, FOR EXAMPLE PARAXYLENE FROM ISOBUTYLENE.
Inventors
- 👤 Alessandro A D
- 👤 M Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:13
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/90; B01J23/92; B01J23/16; B01J23/24; B01J23/26; C; C07; C07C; C07C2/00; C07C2/76; C07C2/82; C07C2/84; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/16; C07C2523/18; C07C2523/24; C07C2523/26; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
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 |