US3880748A
Expired / Lapsed
US
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Platinum-indium-molybdenum reforming catalysts
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1973-12-13
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Granted: 1975-04-29
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Expires: 1993-12-13
Abstract
Abstract Process and composition for improving the octane quality of naphthas. A catalyst comprising a triumvirate of the metals platinum, molybdenum and indium, composited with a porous inorganic oxide base, is found particularly useful in reforming, especially in reforming highly paraffinic naphthas.
Inventors
- 👤 Willard H Sawyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:03
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/22; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J23/652; B01J23/6525; C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/085; C10G35/09
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
50 words
A PROCESS FOR IMPROVING THE OCTANE QUALITY OF NAPHTHAS, PARTICULARLY PARAFFINIC NAPHTHAS, BY CONTACTING SAID NAPHTHA AT REFORMING CONDITIONS WITH A CATALYST COMPOSITE CONSISTING ESSENTIALLY OF A POROUS INORGANIC OXIDE SUPPORT, PLATINUM IN CONCENTRATION RANGING FROM ABOUT 0.05 TO ABOUT 2 PERCENT, MOLYBDENUM AS MOLYBIC OXIDE IN CONCENTRATION RANGING FROM
Claim 2
Dependent Claim
50 words
A PROCESS FOR IMPROVING THE OCTANE QUALITY OF NAPHTHAS, PARTICULARLY PARAFFINIC NAPHTHAS, BY CONTACTING SAID NAPHTHA AT REFORMING CONDITIONS WITH A CATALYST COMPOSITE CONSISTING ESSENTIALLY OF A POROUS INORGANIC OXIDE SUPPORT, PLATINUM IN CONCENTRATION RANGING FROM ABOUT 0.05 TO ABOUT 2 PERCENT, MOLYBDENUM AS MOLYBIC OXIDE IN CONCENTRATION RANGING FROM
Claim 3
Dependent Claim
38 words
The process of claim 1 wherein the catalyst composite contains from about 0.2 to about 0.7 percent platinum, from about 0.05 to about 0.7 percent molybdenum as molybdic oxide, and from about 0.2 to about 0.7 percent indium.
Claim 4
Dependent Claim
13 words
The process of claim 1 wherein the porous inorganic oxide support is alumina.
Claim 5
Dependent Claim
52 words
The process of claim 1 wherein reforming is conducted at temperatures ranging from about 600*F. to about 1050*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 1000 to about 10,000 SCF/Bbl.
Claim 6
Dependent Claim
46 words
The process of claim 4 wherein temperatures range from about 850*F. to about 1000*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 2000 to about 5000 SCF/Bbl.
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) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |