Patent US4477590A successfully refreshed from Google Patents.
US4477590A
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Separately supported polymetallic reforming catalyst
Assignee: Mobil Oil AS
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Filing: 1983-08-24
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Granted: 1984-10-16
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Expires: 2003-08-24
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 and rhenium on a separate support. A process for reforming a charge stock, such as naphtha, utilizing such catalyst is also provided.
Inventors
- 👤 Charles T. Kresge
- 👤 Sowmithri Krishnamurthy
- 👤 William D. McHale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:18
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J23/656; B01J23/6565; C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/085; C10G35/09
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
46 words
A catalyst composition made up of a mixture of two components one component comprising a minor proportion of platinum and rhenium on a carbon dioxide treated support and the second component comprising a minor proportion of iridium and rhenium on a separate carbon dioxide treated support.
Claim 2
Dependent Claim
46 words
A catalyst composition made up of a mixture of two components one component comprising a minor proportion of platinum and rhenium on a carbon dioxide treated support and the second component comprising a minor proportion of iridium and rhenium on a separate carbon dioxide treated 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
40 words
The composition of claim 3 wherein the platinum and iridium are present in amounts ranging from 0.05 to 5 weight percent of each of said metals and rhenium is present in an amount of from 0.2 to 0.6 weight percent.
Claim 6
Dependent Claim
27 words
The composition of claim 4 wherein said platinum, iridium and rhenium are each present in an amount of about 0.3 weight percent based on total catalyst composition.
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) | 1987-10-16 | 1988-04-16 | 1988-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-16 | 1992-04-16 | 1992-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-16 | 1996-04-16 | 1996-10-16 | $7700.00 | Window Closed / Lapsed |