US3933622A
Expired / Lapsed
US
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Trimetallic hydrocarbon conversion catalyst
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1973-12-04
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Granted: 1976-01-20
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Expires: 1993-12-04
Abstract
Abstract A platinum-containing catalyst, particularly one comprising platinum, rhenium, and silver, and preferably platinum, rhenium, silver and halides, composited with a porous inorganic support material, preferably sulfided, is found useful in hydrocarbon conversion reactions, particularly reforming (hydroforming). A naphtha or straight run gasoline can be contacted with such catalyst at reforming conditions in the presence of hydrogen to improve the octane quality of the naphtha or gasoline.
Inventors
- 👤 Howard Lee Mitchell, III
- 👤 James Richard Hays
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:33
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/66; B01J23/68; B01J23/688; B01J37/00; B01J37/22; C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/085; C10G35/09
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
60 words
A catalyst suitable for conversion of hydrocarbons consisting essentially of a composite of a porous inorganic oxide support, platinum in concentration ranging from about 0.05 to about 3 percent, rhenium in concentration ranging from about 0.05 to about 3 percent, and silver in concentration ranging from about 0.005 to about 5 percent, based on the total weight of the catalyst.
Claim 2
Dependent Claim
60 words
A catalyst suitable for conversion of hydrocarbons consisting essentially of a composite of a porous inorganic oxide support, platinum in concentration ranging from about 0.05 to about 3 percent, rhenium in concentration ranging from about 0.05 to about 3 percent, and silver in concentration ranging from about 0.005 to about 5 percent, based on the total weight of the catalyst.
Claim 3
Dependent Claim
34 words
The catalyst of claim 1 wherein the composite comprises from about 0.1 to about 1.0 percent platinum, from about 0.1 to about 1.0 percent rhenium, and from about 0.1 to about 0.7 percent silver.
Claim 4
Dependent Claim
16 words
The catalyst of claim 2 wherein the silver ranges from about 0.2 to about 0.5 percent.
Claim 5
Dependent Claim
17 words
The catalyst of claim 1 wherein the composite comprises from about 0.1 to about 25 percent halogen.
Claim 6
Dependent Claim
10 words
The catalyst of claim 4 wherein the halogen is chlorine.
Claim 7
Dependent Claim
17 words
The catalyst of claim 1 wherein the composite contains from about 0.5 to about 2.5 percent halogen.
Claim 8
Dependent Claim
13 words
The catalyst of claim 1 wherein the porous inorganic oxide support is alumina.
Claim 9
Dependent Claim
17 words
The catalyst of claim 1 wherein the composite contains from about 0.001 to about 2 percent sulfur.
Claim 10
Dependent Claim
17 words
The catalyst of claim 1 wherein the composite contains from about 0.01 to about 0.15 percent sulfur.
Claim 11
Dependent Claim
74 words
A reforming catalyst consisting essentially of a composite of alumina, platinum in concentration ranging from about 0.1 to about 1 percent, rhenium in concentration ranging from about 0.1 to about 1 percent, silver in concentration ranging from about 0.005 to about 5 percent, chlorine in concentration ranging from about 0.3 to about 1.5 percent, and sulfur in concentration ranging from about 0.001 to about 2 percent, based on the total weight of the catalyst.
Claim 12
Dependent Claim
74 words
A reforming catalyst consisting essentially of a composite of alumina, platinum in concentration ranging from about 0.1 to about 1 percent, rhenium in concentration ranging from about 0.1 to about 1 percent, silver in concentration ranging from about 0.005 to about 5 percent, chlorine in concentration ranging from about 0.3 to about 1.5 percent, and sulfur in concentration ranging from about 0.001 to about 2 percent, based on the total weight of the catalyst.
Claim 13
Dependent Claim
16 words
The composition of claim 10 wherein the silver ranges from about 0.1 to about 0.7 percent.
Claim 14
Dependent Claim
29 words
The catalyst of claim 10 wherein the alumina is gamma alumina, and the sum total concentration of the platinum and rhenium ranges from about 0.3 to about 1 percent.
Claim 15
Dependent Claim
36 words
The catalyst of claim 10 wherein the sum total amount of platinum and rhenium ranges from about 0.3 to about 1 percent, and the atom ratio of the rhenium:silver ranges from about 10:1 to about 1:12.
Claim 16
Dependent Claim
36 words
The catalyst of claim 10 wherein the sum total amount of platinum and rhenium ranges from about 0.45 to about 0.70 percent, and the atom ratio of the rhenium:silver ranges from about 1:1 to about 1:5.
Claim 17
Dependent Claim
36 words
The catalyst of claim 10 wherein the sum total amount of platinum and rhenium ranges from about 0.3 to about 1 percent, and the atom ratio of the platinum:rhenium ranges from about 0.25:1 to about 5:1.
Claim 18
Dependent Claim
36 words
The catalyst of claim 10 wherein the sum total amount of platinum and rhenium ranges from about 0.45 to about 0.70 percent, and the atom ratio of the platinum:rhenium ranges from about 1:1 to about 2:1.
Claim 19
Dependent Claim
70 words
A process for improving the octane quality of naphthas comprising contacting the said naphtha at reforming conditions with a catalyst consisting essentially of a porous inorganic oxide support, platinum in concentration ranging from about 0.05 to about 3 percent, rhenium in concentration ranging from about 0.05 to about 3 percent, and silver in concentration ranging from about 0.005 to about 5 percent, based on the total weight of the catalyst.
Claim 20
Dependent Claim
70 words
A process for improving the octane quality of naphthas comprising contacting the said naphtha at reforming conditions with a catalyst consisting essentially of a porous inorganic oxide support, platinum in concentration ranging from about 0.05 to about 3 percent, rhenium in concentration ranging from about 0.05 to about 3 percent, and silver in concentration ranging from about 0.005 to about 5 percent, based on the total weight of the catalyst.
Claim 21
Dependent Claim
16 words
The process of claim 17 wherein the silver ranges from about 0.1 to about 0.7 percent.
Claim 22
Dependent Claim
16 words
The process of claim 17 wherein the silver ranges from about 0.2 to about 0.5 percent.
Claim 23
Dependent Claim
35 words
The process of claim 17 wherein the catalyst composite comprises from about 0.1 to about 1.0 percent platinum, from about 0.1 to about 1.0 percent rhenium and from about 0.1 to about 0.7 percent silver.
Claim 24
Dependent Claim
22 words
The process of claim 20 wherein the sum total concentration of platinum and rhenium ranges from about 0.3 to about 1 percent.
Claim 25
Dependent Claim
17 words
The process of claim 17 wherein the composite comprises from about 0.1 to about 25 percent halogen.
Claim 26
Dependent Claim
17 words
The process of claim 17 wherein the composite comprises from about 0.5 to about 2.5 percent halogen.
Claim 27
Dependent Claim
10 words
The process of claim 23 wherein the halogen is chlorine.
Claim 28
Dependent Claim
13 words
The process of claim 17 wherein the porous inorganic oxide support is alumina.
Claim 29
Dependent Claim
17 words
The process of claim 17 wherein the catalyst contains from about 0.001 to about 2 percent sulfur.
Claim 30
Dependent Claim
17 words
The process of claim 26 wherein the catalyst contains from about 0.01 to about 0.15 percent sulfur.
Claim 31
Dependent Claim
52 words
The process of claim 17 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 32
Dependent Claim
46 words
The process of claim 28 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 0.5 to about 7.0 W/W/Hr., and the hydrogen rate ranges from about 2000 to about 7000 SCF/Bbl.
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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) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |