US4477590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separately supported polymetallic reforming catalyst
Assignee: Mobil Oil AS
•
Filing: 1983-08-24
•
Granted: 1984-10-16
•
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 13:07
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)
US3578583A
Cited
US3487009A
Cited
US3660271A
Cited
US4264475A
Cited
US4288348A
Cited
EP0036703A2
Cited
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 |