US3140263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rejuvenation of platinum catalyst
Assignee: ExxonMobil Oil Corp
•
Filing: 1960-08-05
•
Granted: 1964-07-07
•
Expires: 1980-08-05
Abstract
No abstract record available.
Inventors
- 👤 John W Payne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:28
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/90; B01J23/96
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A METHOD FOR REJUVENATING A SPENT PARTICLE-FORM PLATINUM CATALYST CONTAINING PLATINUM DEPOSITED ON A POROUS SUPPORMT IN PLACE IN THE REACTOR VESSEL WITHOUT EFFECTING REMOVAL OF PLATINUM THEREFROM WHEREIN HYDROCARBON CONVERSION UTILIZING SAID CATALYST IS ACCOMPLISHED WHICH COMPRISES BURNING CARBONACEOUS DEPOSIT FROM THE SURFACE OF SAID CATALYST LAID DOWN DURING SAID HYDROCARBON CONVERSION, CIRCULATING A COOLING GAS THROUGH THE CATALYST BED TO REDUCE THE TEMPERATURE THEREOF TO BELOW THE BOILING POINT OF THE PLATINUM COMPOUND IMPREGNATING SOLUTION SUBSEQUENTLY EMPLOYED, CONTACTING THE COOLED CATALYST PARTICLES WITH SAID IMPREGNATING SOLUTION OF SUFFICIENT CONCENTRATION TO DEPOSIT THEREON ADDITIONAL PLATINUM IN AN AMOUNT OF AT LEAST 0.2 WEIGHT PERCENT, DRYING AND REHEATING THE RESULTING COMPOSITE TO THE TEMPERATURE AT WHICH SAID HYDROCARBON CONVERSION IS EFFECTED.
Claim 2
Independent Claim
121 words
A METHOD FOR REJUVENATING A SPENT PARTICLE-FORM PLATINUM CATALYST CONTAINING PLATINUM DEPOSITED ON A POROUS SUPPORMT IN PLACE IN THE REACTOR VESSEL WITHOUT EFFECTING REMOVAL OF PLATINUM THEREFROM WHEREIN HYDROCARBON CONVERSION UTILIZING SAID CATALYST IS ACCOMPLISHED WHICH COMPRISES BURNING CARBONACEOUS DEPOSIT FROM THE SURFACE OF SAID CATALYST LAID DOWN DURING SAID HYDROCARBON CONVERSION, CIRCULATING A COOLING GAS THROUGH THE CATALYST BED TO REDUCE THE TEMPERATURE THEREOF TO BELOW THE BOILING POINT OF THE PLATINUM COMPOUND IMPREGNATING SOLUTION SUBSEQUENTLY EMPLOYED, CONTACTING THE COOLED CATALYST PARTICLES WITH SAID IMPREGNATING SOLUTION OF SUFFICIENT CONCENTRATION TO DEPOSIT THEREON ADDITIONAL PLATINUM IN AN AMOUNT OF AT LEAST 0.2 WEIGHT PERCENT, DRYING AND REHEATING THE RESULTING COMPOSITE TO THE TEMPERATURE AT WHICH SAID HYDROCARBON CONVERSION IS EFFECTED.
References Cited (Backward Citations)
US2635080A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |