Patent US2311237A successfully refreshed from Google Patents.
Patent US3674706A successfully refreshed from Google Patents.
US3674706A
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US
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Tin impregnation regeneration of group viii reforming-dehydrogenation catalysts
Assignee: Phillips Petroleum Co
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Filing: 1970-06-03
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Granted: 1972-07-04
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Expires: 1990-06-03
Abstract
Abstract Deactivated catalysts containing Group VIII metal contact agents are regenerated by a process comprising impregnating the deactivated composite material with tin or a tin compound. Preferably, the tin-impregnated composite is thereafter calcined. The process is particularly suitable for the regeneration of deactivated reforming and dehydrogenation catalysts.
Inventors
- 👤 E O Box Jr
- 👤 Lewis E Drehman
- 👤 Floyd E Farha Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:09
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/835; B01J23/38; B01J23/54; B01J23/56; B01J23/62; B01J23/622; B01J23/626; B01J23/90; B01J23/94; B01J23/96; C; C07; C07C; C07C5/00; C07C5/32; C07C5/321; C07C5/324; C07C5/325; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/085; C10G35/09; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/901
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
29 words
A method according to claim 1 wherein said Group VIII metal compound is selected from the group consisting of nickel, platinum, ruthenium, rhodium, palladium, osmium, iridium, and mixtures thereof.
Claim 2
Dependent Claim
13 words
A method according to claim 2 wherein said support is zinc aluminate spinel.
Claim 3
Dependent Claim
43 words
A method according to claim 2 wherein said tin solution is an aqueous or nonaqueous solution of a tin compound selected from the class consisting of stannous or stannic halide, nitrate, sulfide, ammonium halide, oxy-halide, acetate, propionate, tartrate, triphenyltin chloride, diethyltin and triethyltin.
Claim 4
Dependent Claim
20 words
A method according to claim 4 wherein said catalyst composite is impregnated with from 0.1 to 1 weight percent tin.
Claim 5
Dependent Claim
20 words
A method according to claim 5 wherein said support is zinc aluminate spinel and said Group VIII metal is platinum.
Claim 6
Dependent Claim
24 words
A method according to claim 1 wherein said tin-impregnated composite is calcined at a temperature in the range of 800* to 1, 200* F.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |