US2916531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydrogenation of hydrocarbons
Assignee: Shell Development Co
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Filing: 1959-02-17
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Granted: 1959-12-08
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Expires: 1979-02-17
Abstract
No abstract record available.
Inventors
- 👤 Warren E Armstrong
- 👤 Carroll Z Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:44
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/86; B01J23/862; C; C07; C07C; C07C5/00; C07C5/32; C07C5/327; C07C5/333; C07C5/3332
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
PROCESS FOR THE SUBSTANTIALLY CONTINUOUS DEHYDROGENATION OF A HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF OLEFINS AND ALKYL AROMATICS TO GIVE PREDOMINANTLY THE CORRESPONDING DIOLEFIN AND VINYL AROMATIC HYDROCARBON, RESPECTIVELY, WHICH COMPRISES PASSING SAID HYDROCARBON TOGETHER WITH FROM 2 TO 30 MOLES OF STEAM PER MOLE OF HYDROCARBON AT A TEMPERATURE BETWEEN ABOUT 580 AND 700* C. IN CONTACT WITH A CATALYST CONSISTING SUBSTANTIALLY ENTIRELY OF A LEAST 35% IRON OXIDE CALCULATED AS FE2O3, A COMPOUND OF POTASSIUM OTHER THAN THE CHLORIDE EQUIVALENT TO AT LEAST 6% K2CO3, AND HAVING INTIMATELY DISPERSED IN THE POTASSIUM COMPOUND PHASE BETWEEN ABOUT 0.5 AND 6% SILICA.
Claim 2
Dependent Claim
103 words
PROCESS FOR THE SUBSTANTIALLY CONTINUOUS DEHYDROGENATION OF A HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF OLEFINS AND ALKYL AROMATICS TO GIVE PREDOMINANTLY THE CORRESPONDING DIOLEFIN AND VINYL AROMATIC HYDROCARBON, RESPECTIVELY, WHICH COMPRISES PASSING SAID HYDROCARBON TOGETHER WITH FROM 2 TO 30 MOLES OF STEAM PER MOLE OF HYDROCARBON AT A TEMPERATURE BETWEEN ABOUT 580 AND 700* C. IN CONTACT WITH A CATALYST CONSISTING SUBSTANTIALLY ENTIRELY OF A LEAST 35% IRON OXIDE CALCULATED AS FE2O3, A COMPOUND OF POTASSIUM OTHER THAN THE CHLORIDE EQUIVALENT TO AT LEAST 6% K2CO3, AND HAVING INTIMATELY DISPERSED IN THE POTASSIUM COMPOUND PHASE BETWEEN ABOUT 0.5 AND 6% SILICA.
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) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |