US3755145A
Expired / Lapsed
US
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Lube oil hydrocracking with zsm-5 zeolite
Assignee: Mobil Oil AS
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Filing: 1971-03-17
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Granted: 1973-08-28
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Expires: 1991-03-17
Abstract
Abstract A process for preparing lube oils characterized by possessing low pour points is set forth. The process involves subjecting a lube stock to a hydrocracking operation utilizing a catalyst mixture comprising hydrogenation components, a conventional cracking catalyst which can be either crystalline or amorphous and a crystalline aluminosilicate of the ZSM-5 type.
Inventors
- 👤 B Orkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:28
CPC Classifications
C; C10; C10G; C10G47/00; C10G47/02; C10G47/10; C10G47/12; C10G47/16; C10G2400/00; C10G2400/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
14 words
The process of claim 1 wherein the large pore size aluminosilicate is synthetic faujasite.
Claim 2
Dependent Claim
12 words
The process of claim 1 wherein the ZSM-5 type catalyst is ZSM-8.
Claim 3
Dependent Claim
22 words
The process of claim 1 wherein the ZSM-5 type catalyst has been base exchanged with hydrogen ions, ammonium ions, and mixtures thereof.
Claim 4
Dependent Claim
15 words
The process of claim 1 wherein the large pore cracking catalyst is an inorganic oxide.
Claim 5
Dependent Claim
11 words
The process of claim 5 wherein the inorganic oxide comprises silica.
Claim 6
Dependent Claim
25 words
The process of claim 1 wherein the large pore cracking catalyst is a crystalline aluminosilicate having a pore size from 6 to 15 Angstrom units.
Claim 7
Dependent Claim
107 words
The process for preparing low pour point lube oils which comprises contacting a petroleum feed stock having a boiling point above 650* F. under hydrocracking conditions with a catalyst composition comprising a. A ZSM-5 type zeolite having a composition in terms of mole ratios of oxides as follows: 0.9 + or - 0.2 M2/nO : Al2O3 : Y SiO2 : z H2O wherein M is at least one cation having a valence n, Y is at least 5 and z is between 0 and 40, said aluminosilicate having the x-ray diffraction lines as set forth in Table 1 of the specification, and b. a nickel-tungsten-silica-zirconia-clay cracking catalyst.
Claim 8
Dependent Claim
15 words
The process of claim 8 wherein M is a mixture of ammonium and zinc cations.
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) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |