US4600700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regeneration of platinum-containing zeolite catalysts which includes oxidation of coke in the presence of water
Assignee: Mobil Oil AS
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Filing: 1984-12-28
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Granted: 1986-07-15
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Expires: 2004-12-28
Abstract
Abstract A process is described for regenerating a coke-deactivated platinum-containing zeolite catalyst material, which includes oxidizing the deactivated catalyst material in the presence of water under conditions which do not cause significant agglomeration of the platinum on the catalyst.
Inventors
- 👤 William D. McHale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:38
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/58; C10G45/60; C10G45/64; B; B01; B01J; B01J29/00; B01J29/90
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
129 words
A process for regenerating a coke-deactivated catalytic dewaxing platinum-Zeolite Beta catalyst, which consists essentially of the following steps in sequence: (1) contacting said Zeolite Beta catalyst with from 1 to 21 volume % oxygen in the presence of from 1.5 to 3.0 volume % water at a temperature of from 290° to 385° C., and a pressure of about 0-400 psig in an offsite thin-layer moving bed regenerator under conditions such that said Zeolite Beta catalyst is oxidized without causing significant agglomeration of said platinum on said Zeolite Beta catalyst; and (2) exposing the resulting Zeolite Beta catalyst to hydrogen at a temperature of from 350° to 450° C. and a pressure of from 150 to 250 psig at a contact time ranging from about 2 to 5 hours.
Claim 2
Dependent Claim
129 words
A process for regenerating a coke-deactivated catalytic dewaxing platinum-Zeolite Beta catalyst, which consists essentially of the following steps in sequence: (1) contacting said Zeolite Beta catalyst with from 1 to 21 volume % oxygen in the presence of from 1.5 to 3.0 volume % water at a temperature of from 290° to 385° C., and a pressure of about 0-400 psig in an offsite thin-layer moving bed regenerator under conditions such that said Zeolite Beta catalyst is oxidized without causing significant agglomeration of said platinum on said Zeolite Beta catalyst; and (2) exposing the resulting Zeolite Beta catalyst to hydrogen at a temperature of from 350° to 450° C. and a pressure of from 150 to 250 psig at a contact time ranging from about 2 to 5 hours.
Claim 3
Dependent Claim
14 words
The process of claim 1, wherein said oxygen is in the form of air.
Claim 4
Dependent Claim
18 words
The process of claim 1, wherein said Zeolite Beta has a silica-to-alumina mole ratio no less than 20.
Claim 5
Dependent Claim
18 words
The process of claim 1, wherein said Zeolite Beta has a silica-to-alumina mole ratio no less than 70.
Claim 6
Dependent Claim
23 words
The process of claim 1, wherein said Zeolite Beta further comprises inorganic binders selected from alumina, silica, silica-alumina, magnesium, titania, zirconia, or thoria.
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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) | 1989-07-14 | 1990-01-13 | 1990-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-14 | 1994-01-13 | 1994-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-14 | 1998-01-13 | 1998-07-15 | $7700.00 | Window Closed / Lapsed |