Patent US4349433A successfully refreshed from Google Patents.
US4349433A
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Separately supported polymetallic reforming catalyst
Assignee: Mobil Oil AS
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Filing: 1981-03-25
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Granted: 1982-09-14
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Expires: 2001-03-25
Abstract
Abstract There is provided, in accordance with the present invention, a catalyst composition made up of a mixture of two components, one component comprising a minor proportion of platinum and rhenium on a support and the second component comprising a minor proportion of iridium on a separate support. A process for reforming a charge stock, such as naphtha, utilizing such catalyst is also provided.
Inventors
- 👤 Hans J. Schoennagel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:19
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/085; C10G35/09; B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/46; B01J23/468; B01J23/54; B01J23/56; B01J23/64; B01J23/656; B01J23/6567; B01J37/00; B01J37/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
52 words
A reforming process which comprises contacting a reforming charge stock under reforming conditions with a catalyst composition made up of a mixture of two components, one component comprising a minor proportion of platinum and rhenium on a support and the second component comprising a minor proportion of iridium on a separate support.
Claim 2
Dependent Claim
52 words
A reforming process which comprises contacting a reforming charge stock under reforming conditions with a catalyst composition made up of a mixture of two components, one component comprising a minor proportion of platinum and rhenium on a support and the second component comprising a minor proportion of iridium on a separate support.
Claim 3
Dependent Claim
13 words
The reforming process of claim 2 wherein said support is an inorganic oxide.
Claim 4
Dependent Claim
11 words
The reforming process of claim 3 wherein said support is alumina.
Claim 5
Dependent Claim
101 words
A reforming process which comprises contacting a reforming charge stock under reforming conditions with a catalyst composition comprising a refractory support, about 0.1 to about 5 percent by weight of platinum, about 0.1 to about 5 percent by weight of rhenium, about 0.1 to about 5 weight percent of iridium, about 0.1 to about 5 weight percent of halogen, wherein said platinum and rhenium are contained on particles of one support and iridium is contained on separate particles of said support, with the relative weight ratio of the particles containing platinumrhenium and those containing iridium being between about 10:1 to 1:10.
Claim 6
Dependent Claim
101 words
A reforming process which comprises contacting a reforming charge stock under reforming conditions with a catalyst composition comprising a refractory support, about 0.1 to about 5 percent by weight of platinum, about 0.1 to about 5 percent by weight of rhenium, about 0.1 to about 5 weight percent of iridium, about 0.1 to about 5 weight percent of halogen, wherein said platinum and rhenium are contained on particles of one support and iridium is contained on separate particles of said support, with the relative weight ratio of the particles containing platinumrhenium and those containing iridium being between about 10:1 to 1:10.
Claim 7
Dependent Claim
14 words
The reforming process of claim 4 wherein said refractory support is an inorganic oxide.
Claim 8
Dependent Claim
12 words
The reforming process of claim 4 wherein said refractory support is alumina.
Claim 9
Dependent Claim
11 words
The reforming process of claim 7 wherein said halogen is chloride.
Claim 10
Dependent Claim
24 words
The reforming process of claim 4 wherein the weight ratio of particles containing platinum-rhenium and those containing iridium is between about 5:1 to 1:5.
Claim 11
Dependent Claim
21 words
The reforming process 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 reforming process of claim 4 wherein the size of said particles is between about 1 and about 3000 microns.
Claim 13
Dependent Claim
26 words
The reforming process of claim 4 wherein platinum-rhenium is deposited on a support of gamma alumina and iridium is deposited on a support of eta aluminas.
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) | 1985-09-13 | 1986-03-15 | 1986-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-13 | 1990-03-15 | 1990-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-13 | 1994-03-15 | 1994-09-14 | $7700.00 | Window Closed / Lapsed |