US3899544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of alcohols and ethers to hydrocarbons
Assignee: Mobil Oil AS
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Filing: 1974-03-28
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Granted: 1975-08-12
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Expires: 1994-03-28
Abstract
Abstract In the high temperature (500* to 850*F) conversion of alcohols and/or ethers to higher carbon number hydrocarbons by contact with a high silica to alumina ratio aluminosilicate zeolite having constraint index of about 1 to 12, such as ZSM-5, maximizing the C5 hydrocarbon yield by incorporating a limited amount of a Bronsted or Lewis base, such as metal, particularly sodium or a Group Va element such as nitrogen or phosphorus as part of the cation in the zeolite catalyst.
Inventors
- 👤 Clarence D Chang
- 👤 William H Lang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:59
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/20; C07C1/26; C07C1/32; C07C1/321; C07C1/322; C07C1/323; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/40; C07C2529/42; C07C2529/44; C07C2529/46; Y; Y10; Y10S; Y10S208/00; Y10S208/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
133 words
IN THE PROCESS OF CONVERTING LOWER ALIPHATIC ORGANIC FEED COMPOUNDS CONTAINING UP TO ABOUT 8 CARBON ATOMS IN A HYDROCARBYL CONSTITUENT THEREOF AND AT LEAST ONE HETERO ATOM SELECTED FROM THE GROUP CONSISTING OF SULFUR, OXYGEN, NITROGEN AND HALOGEN TO A HIGHER HYDROCARBON PRODUCT HAVING A SUBSTANTIAL FRACTION IN THE C5 TO 400*F BOILING RANGE BY CONTACTING SAID FEED WITH A CRYSTALLINE ALUMINOSILCATE ZEOLITE, HAVIG A SILICA TO ALUMINA RATIO OF AT LEAST ABOUT 12 AND A CONSTRAINT INDEX OF ABOUT 1 TO 12, AT ABOUT 500* TO 8850*F UP TO ABOUT 50 ATMOSPHERES, 0.5 TO 50 LHSV AND IN THE SUBSTANTIAL ABSENCE OF ADDED, PREFORMED HYDROGEN, THE IMPROVEMENT WHICH COMPRISES UTILIZING AS SAID CATALYST SAID ZEOLITE CONTAINING ABOUT 30 TO 85% OF ITS CATION CITES SATIFIED BY A LEWIS OR BRONSTED BASE.
Claim 2
Dependent Claim
133 words
IN THE PROCESS OF CONVERTING LOWER ALIPHATIC ORGANIC FEED COMPOUNDS CONTAINING UP TO ABOUT 8 CARBON ATOMS IN A HYDROCARBYL CONSTITUENT THEREOF AND AT LEAST ONE HETERO ATOM SELECTED FROM THE GROUP CONSISTING OF SULFUR, OXYGEN, NITROGEN AND HALOGEN TO A HIGHER HYDROCARBON PRODUCT HAVING A SUBSTANTIAL FRACTION IN THE C5 TO 400*F BOILING RANGE BY CONTACTING SAID FEED WITH A CRYSTALLINE ALUMINOSILCATE ZEOLITE, HAVIG A SILICA TO ALUMINA RATIO OF AT LEAST ABOUT 12 AND A CONSTRAINT INDEX OF ABOUT 1 TO 12, AT ABOUT 500* TO 8850*F UP TO ABOUT 50 ATMOSPHERES, 0.5 TO 50 LHSV AND IN THE SUBSTANTIAL ABSENCE OF ADDED, PREFORMED HYDROGEN, THE IMPROVEMENT WHICH COMPRISES UTILIZING AS SAID CATALYST SAID ZEOLITE CONTAINING ABOUT 30 TO 85% OF ITS CATION CITES SATIFIED BY A LEWIS OR BRONSTED BASE.
Claim 3
Dependent Claim
18 words
The improved process claimed in claim 1 wherein said base in a Group Ia or Va element cation.
Claim 4
Dependent Claim
25 words
The improved process claimed in claim 1 wherein said base is at least one member selected from the group consisting of sodium, nitrogen and phosphorus.
Claim 5
Dependent Claim
29 words
The improved process claimed in claim 1 wherein said feed is at least one member selected from the group consisting of alcohols, ethers, ketones, alkyl halides, mercaptans and amines.
Claim 6
Dependent Claim
12 words
The improved process claimed in claim 1 wherein said feed comprises methanol.
Claim 7
Dependent Claim
13 words
The improved process claimed in claim 1 wherein said feed comprises dimethyl ether.
Claim 8
Dependent Claim
12 words
The improved process claimed in claim 1 wherein said zeolite comprises ZSM-5.
Claim 9
Dependent Claim
26 words
The improved process claimed in claim 1 wherein said zeolite has incorporated therewith a member selected from the group consisting of zinc, cadmium, palladium and nickel.
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) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |