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US4264475A
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Bimetallic reforming catalyst containing separate platinum-containing and iridium-containing particles
Assignee: Mobil Oil AS
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Filing: 1979-10-30
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Granted: 1981-04-28
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Expires: 1999-10-30
Abstract
Abstract Catalyst compositions are provided consisting essentially of a refractory support about 0.1 to about 5 percent by weight of platinum, about 0.1 to about 5 percent by weight of iridium and about 0.1 to about 5 weight percent of halogen, where the platinum and iridium are contained on separate particles of support. The relative weight ratio of the particles containing platinum are those containing iridium is between about 10:1 and about 1:10. The compositions are useful as hydrocarbon conversion catalysts and are especially applicable for use in catalyzing the reforming of naphtha petroleum fractions.
Inventors
- 👤 Hans J. Schoennagel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:44
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/46; B01J23/468; B01J37/00; B01J37/04; C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/085; C10G35/09
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
27 words
A catalyst composition consisting essentially of a mixture of a minor proportion of platinum on a support and a minor proportion of iridium on a separate support.
Claim 2
Dependent Claim
27 words
A catalyst composition consisting essentially of a mixture of a minor proportion of platinum on a support and a minor proportion of iridium on a separate support.
Claim 3
Dependent Claim
13 words
The catalyst composition of claim 1 wherein said support is an inorganic oxide.
Claim 4
Dependent Claim
11 words
The catalyst composition of claim 1 wherein said support is alumina.
Claim 5
Dependent Claim
70 words
A catalyst composition consisting essentially of a refractory support, about 0.1 to about 5 percent by weight of platinum, about 0.1 to about 5 weight percent of iridium, about 0.1 to about 5 weight percent of halogen, wherein said platinum and iridium are contained on separate particles of said support, with the relative weight ratio of the particles containing platinum and those containing iridium being between about 10:1 to 1:10.
Claim 6
Dependent Claim
70 words
A catalyst composition consisting essentially of a refractory support, about 0.1 to about 5 percent by weight of platinum, about 0.1 to about 5 weight percent of iridium, about 0.1 to about 5 weight percent of halogen, wherein said platinum and iridium are contained on separate particles of said support, with the relative weight ratio of the particles containing platinum and those containing iridium being between about 10:1 to 1:10.
Claim 7
Dependent Claim
14 words
The catalyst composition of claim 4 wherein said refractory support is an inorganic oxide.
Claim 8
Dependent Claim
12 words
The catalyst composition of claim 4 wherein said refractory support is alumina.
Claim 9
Dependent Claim
11 words
The catalyst composition of claim 4 wherein said halogen is chlorine.
Claim 10
Dependent Claim
24 words
The catalyst composition of claim 4 wherein the weight ratio of particles containing platinum and those containing iridium is between about 5:1 to 1:5.
Claim 11
Dependent Claim
21 words
The catalyst composition of claim 4 wherein the size of said particles is between about 0.01 micron and about 10000 microns.
Claim 12
Dependent Claim
20 words
The catalyst composition of claim 4 wherein the size of said particles is between about 1 and about 3000 microns.
Claim 13
Dependent Claim
26 words
The catalyst composition of claim 4 wherein platinum is deposited on a support of gamma alumina and iridium is deposited on a support of eta aluminas.
Claim 14
Dependent Claim
43 words
A catalyst composition consisting essentially of a mixture of at least two components, one of said components comprising a minor proportion of platinum on a support and another of said components consisting essentially of a minor proportion of iridium on a separate support.
Claim 15
Dependent Claim
43 words
A catalyst composition consisting essentially of a mixture of at least two components, one of said components comprising a minor proportion of platinum on a support and another of said components consisting essentially of a minor proportion of iridium on a separate support.
Claim 16
Dependent Claim
34 words
The catalyst composition of claim 12 wherein the platinum-containing component also contains an additional component selected from the group consisting of silver, osmium, copper, gold, palladium, rhodium, gallium, rhenium, germanium, tin and compounds thereof.
Claim 17
Dependent Claim
24 words
The catalyst composition of claim 12 wherein the platinum-containing component also contains rhenium in an amount between about 0.01 and about 2 weight percent.
Claim 18
Dependent Claim
13 words
The catalyst composition of claim 12 wherein said support is an inorganic oxide.
Claim 19
Dependent Claim
11 words
The catalyst composition of claim 12 wherein said support is alumina.
Claim 20
Dependent Claim
12 words
The catalyst composition of claim 12 wherein said support is gamma alumina.
Claim 21
Dependent Claim
26 words
The catalyst composition of claim 12 wherein platinum is deposited on a support of gamma alumina and iridium is deposited on a support of eta alumina.
Claim 22
Dependent Claim
87 words
A catalyst composition containing a refractory support, about 0.1 to about 5 percent by weight of platinum, about 0.1 to about 5 percent by weight of iridium and about 0.1 to about 5 weight percent of halogen, which composition is further characterized by being a mixture of particles of at least two components, one of said components comprising a minor proportion of platinum on a support and another of said components the metal content thereof consisting essentially of a minor proportion of iridium on a separate support.
Claim 23
Dependent Claim
87 words
A catalyst composition containing a refractory support, about 0.1 to about 5 percent by weight of platinum, about 0.1 to about 5 percent by weight of iridium and about 0.1 to about 5 weight percent of halogen, which composition is further characterized by being a mixture of particles of at least two components, one of said components comprising a minor proportion of platinum on a support and another of said components the metal content thereof consisting essentially of a minor proportion of iridium on a separate support.
Claim 24
Dependent Claim
34 words
The catalyst composition of claim 19 wherein the platinum-containing component also contains an additional component selected from the group consisting of silver, osmium, copper, gold, palladium, rhodium, gallium, rhenium, germanium, tin and compounds thereof.
Claim 25
Dependent Claim
24 words
The catalyst composition of claim 19 wherein the platinum-containing component also contains rhenium in an amount between about 0.01 and about 2 weight percent.
Claim 26
Dependent Claim
26 words
The catalyst composition of claim 19 wherein the relative weight ratio of the particles containing platinum and those containing iridium is between about 10:1 to 1:10.
Claim 27
Dependent Claim
14 words
The catalyst composition of claim 19 wherein said refractory support is an inorganic oxide.
Claim 28
Dependent Claim
12 words
The catalyst composition of claim 19 wherein said refractory suppport is alumina.
Claim 29
Dependent Claim
13 words
The catalyst composition of claim 19 wherein said refractory support is gamma alumina.
Claim 30
Dependent Claim
11 words
The catalyst composition of claim 19 wherein said halogen is chlorine.
Claim 31
Dependent Claim
26 words
The catalyst composition of claim 19 wherein platinum is deposited on a support of gamma alumina and iridium is deposited on a support of eta alumina.
Claim 32
Dependent Claim
21 words
The catalyst composition of claim 19 wherein the size of said particles is between about 0.01 micron and about 10,000 microns.
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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) | 1984-04-27 | 1984-10-27 | 1985-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-27 | 1988-10-27 | 1989-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-27 | 1992-10-27 | 1993-04-28 | $7700.00 | Window Closed / Lapsed |