US3620963A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic dewaxing
Assignee: Chevron USA Inc
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Filing: 1970-04-17
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Granted: 1971-11-16
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Expires: 1990-04-17
Abstract
Abstract A process for catalytically dewaxing an oil which comprises contacting the oil at a temperature between 500* and 900* F., a pressure between 300 and 5,000 p.s.i.g., and in the presence of hydrogen, with a catalyst comprising a mixture of mordenite and an amorphous porous inorganic oxide associated with nickel and tin. Preferably the mixture of mordenite and the nickel-tin component is a physical mixture, i.e., preferably the nickel and tin are not supported on the mordenite, as by impregnation or ion-exchange into the mordenite. Preferably, the amorphous porous inorganic oxide associated with the nickel and tin is silica.
Inventors
- 👤 Bernard F Mulaskey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:20
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/18; B01J29/20; B01J29/24; C; C10; C10G; C10G2400/00; C10G2400/10; Y; Y10; Y10S; Y10S208/00; Y10S208/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
34 words
A process in accordance with claim 1, wherein the amorphous porous inorganic oxide contains from 2 to 50 combined weight percent nickel plus tin with a nickel to tin ratio of 0.25 to 20.
Claim 2
Dependent Claim
14 words
A process in accordance with claim 1, wherein the mordenite is in hydrogen form.
Claim 3
Dependent Claim
21 words
A process in accordance with claim 1, wherein the mordenite is present in an amount from 10 to 85 weight percent.
Claim 4
Dependent Claim
21 words
A process in accordance with claim 1 wherein the mordenite is present in an amount from 65 to 85 weight percent.
Claim 5
Dependent Claim
24 words
A process in accordance with claim 1 wherein the catalyst comprises a physical particle-form mixture of the mordenite and the nickel-tin-amorphous porous inorganic oxide.
Claim 6
Dependent Claim
25 words
A process in accordance with claim 1 wherein the temperature is between 550* and 750* F. and the pressure is between 750 and 1,500 p.s.i.g.
Claim 7
Dependent Claim
21 words
A process in accordance with claim 1 wherein the boiling range of the feedstock is between about 650* and 1,000* F.
Claim 8
Dependent Claim
14 words
A process in accordance with claim 1 wherein the porous inorganic oxide is silica.
Claim 9
Dependent Claim
20 words
A process in accordance with claim 1 wherein the nickel-tin-amorphous porous inorganic oxide consists essentially of nickel, tin and silica.
Claim 10
Dependent Claim
57 words
A process for catalytically dewaxing an oil boiling between about 650* and 1,000* F. which comprises contacting the oil, at a temperature between 550* and 750* F., a pressure between 500 and 1,500 p.s.i.g., and in the presence of hydrogen, with a catalyst comprising a physical mixture of discrete particles of mordenite and in a nickel-tin-silica phase.
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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |