US3867280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reforming with Pt-Ir catalysts promoted by either Bi or Fe
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1973-08-16
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Granted: 1975-02-18
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Expires: 1993-08-16
Abstract
Abstract Process and composition for improving the octane quality of naphthas. An iridium-containing catalyst, particularly a catalyst of an admixture of platinum, iridium, and either iron or bismuth, or both, composited with a porous, inorganic oxide base, inclusive of halogen, is found especially useful in reforming particularly in redispersing agglomerated iridium in reactivation of the catalyst.
Inventors
- 👤 John D Paynter
- 👤 William M Bunting
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:54
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/085; C10G35/09; B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J23/644; B01J23/6447; B01J23/70; B01J23/89; B01J23/8906; B01J23/90; B01J23/96; B01J37/00; B01J37/22
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
114 words
A PROCESS FOR IMPROVING THE OCTANE QUALITY OF NAPHTA WHICH COMPRISES CONTACTING SAID NAPHTA IN AN-OIL PORTION OF AN OPERATING CYCLE AT REFORMING CONDITIONS WITH A CATALYST COMPOSITE INCLUDING A POROUS INORGANIC OXIDE SUPPORT, HALOGEN IN CONCENTRATION RANGING FORM ABOUT 0.1 TO ABOUT 2 PERCENT, PLATINUM IN CONCENTRATION RANGING FROM ABOUT 0.05 TO ABOUT 3 PERCENT, IRIDIUM IN CONCENTRATION RANGING FROM ABOUT 0.05 TO ABOUT 3 PERCENT, AND IRON OR BISMUTH IN CONCENTRATION RANGING FROM ABOUT 0.5 TO ABOUT 5 PERCENT, BASED ON THE TOTAL WEIGHT OF THE CATALYST, AND IN A SUBSEQUENT PORTION OF AN OPERATING CYCLE, BURNING OFF DEPOSITE COKE WITH AN OXYGENCONTAINING GAS, AND ACTIVATING THE CATALYST BY CONTACT WITH HALOGEN.
Claim 2
Dependent Claim
114 words
A PROCESS FOR IMPROVING THE OCTANE QUALITY OF NAPHTA WHICH COMPRISES CONTACTING SAID NAPHTA IN AN-OIL PORTION OF AN OPERATING CYCLE AT REFORMING CONDITIONS WITH A CATALYST COMPOSITE INCLUDING A POROUS INORGANIC OXIDE SUPPORT, HALOGEN IN CONCENTRATION RANGING FORM ABOUT 0.1 TO ABOUT 2 PERCENT, PLATINUM IN CONCENTRATION RANGING FROM ABOUT 0.05 TO ABOUT 3 PERCENT, IRIDIUM IN CONCENTRATION RANGING FROM ABOUT 0.05 TO ABOUT 3 PERCENT, AND IRON OR BISMUTH IN CONCENTRATION RANGING FROM ABOUT 0.5 TO ABOUT 5 PERCENT, BASED ON THE TOTAL WEIGHT OF THE CATALYST, AND IN A SUBSEQUENT PORTION OF AN OPERATING CYCLE, BURNING OFF DEPOSITE COKE WITH AN OXYGENCONTAINING GAS, AND ACTIVATING THE CATALYST BY CONTACT WITH HALOGEN.
Claim 3
Dependent Claim
45 words
The process of claim 1 wherein the catalyst composite contains from about 0.6 to about 1.5 percent halogen, from about 0.1 to about 0.6 percent platinum, from about 0.15 to about 0.3 percent iridium, and from about 0.5 to about 2 percent iron or bismuth.
Claim 4
Dependent Claim
13 words
The process of claim 1 wherein the porous inorganic oxide support is alumina.
Claim 5
Dependent Claim
54 words
The process of claim 1 wherein reforming is conducted at temperatures ranging from about 600* F. to about 1,050* F., at pressures ranging from about 50 psig to about 750 psig, at space velocities ranging from about 0.1 to about 25 W/Hr./W, and at hydrogen rates ranging from about 1,000 to about 10,000 SCF/Bbl.
Claim 6
Dependent Claim
48 words
The process of claim 4 wherein temperatures range from about 850* F. to about 1,000* F., pressures range from about 100 psig to about 250 psig, space velocities range from about 1.0 to about 5.0 W/W/Hr., and the hydrogen rate ranges from about 2,000 to about 5,000 SCF/Bbl.
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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |