US4360419A
Expired / Lapsed
US
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Catalytic dewaxing
Assignee: De Nora SpA
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Filing: 1980-12-22
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Granted: 1982-11-23
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Expires: 2000-12-22
Abstract
Abstract An improved catalytic dewaxing process using a CZH-5 zeolite having a hydrogenation component is disclosed.
Inventors
- 👤 Stephen J. Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:11
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/70; B01J29/87; C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05; C10G45/00; C10G45/58; C10G45/60; C10G45/64
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
96 words
A dewaxing process, comprising contacting under catalytic dewaxing conditions, a hydrocarbonaceous feed which comprises normal and slightly-branched chain hydrocarbons and which has a feed nitrogen content of less than about 50 ppmw and a feed sulfur content of less than about 50 L ppmw with a catalyst which comprises a hydrogenation component and a zeolite having a mol ratio of an oxide selected from silicon oxide, germanium oxide, and mixtures thereof to an oxide selected from aluminum oxide, gallium oxide and mixtures thereof greater than about 5:1, and having the X-ray diffraction lines of Table I.
Claim 2
Dependent Claim
96 words
A dewaxing process, comprising contacting under catalytic dewaxing conditions, a hydrocarbonaceous feed which comprises normal and slightly-branched chain hydrocarbons and which has a feed nitrogen content of less than about 50 ppmw and a feed sulfur content of less than about 50 L ppmw with a catalyst which comprises a hydrogenation component and a zeolite having a mol ratio of an oxide selected from silicon oxide, germanium oxide, and mixtures thereof to an oxide selected from aluminum oxide, gallium oxide and mixtures thereof greater than about 5:1, and having the X-ray diffraction lines of Table I.
Claim 3
Dependent Claim
11 words
The process of claim 1 wherein said zeolite is an aluminosilicate.
Claim 4
Dependent Claim
14 words
The process of claim 2 wherein said mol ratio is greater than about 40:1.
Claim 5
Dependent Claim
32 words
The process of claim 1 wherein said hydrogenation component is selected from Group VIB metals and compounds thereof, Group VIII metals and compounds thereof, and mixtures of said metals and metal compounds.
Claim 6
Dependent Claim
26 words
The process of claim 4 wherein said hydrogenation component is a Group VIII metal or compound thereof or mixture of Group VIII metals or compounds thereof.
Claim 7
Dependent Claim
16 words
The process of claim 5 wherein said hydrogenation component is selected from platinum, palladium, and iridium.
Claim 8
Dependent Claim
32 words
The process of claim 1 wherein said feed has a sulfur content of less than about 10 ppm by weight and a nitrogen content of less than about 10 ppm by weight.
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) | 1985-11-22 | 1986-05-24 | 1986-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-22 | 1990-05-24 | 1990-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-22 | 1994-05-24 | 1994-11-23 | $7700.00 | Window Closed / Lapsed |