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US4320241A
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Process for converting oxygenated hydrocarbons into hydrocarbons
Assignee: Occidental Research Corp
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Filing: 1980-08-28
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Granted: 1982-03-16
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Expires: 2000-08-28
Abstract
Abstract Oxygenated hydrocarbons are contacted with a crystalline aluminosilicate zeolite for conversion into hydrocarbons.
Inventors
- 👤 Theodore C. Frankiewicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:05
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/20; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/40; B01J29/50; C10; C10G; C10G3/00; C10G3/42; C10G3/44; C10G3/48; C10G3/49; B01J2229/00; B01J2229/30; B01J2229/36; C07C2529/00; C07C2529/03; C07C2529/035; C07C2529/04; C07C2529/06; C07C2529/40; C07C2529/50; C10G2300/00; C10G2300/40; C10G2300/4018; C10G2300/80; C10G2300/802; C10G2300/805; C10G2300/807; Y; Y02; Y02P; Y02P30/00; Y02P30/20
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
78 words
A process for converting oxygenated hydrocarbons into hydrocarbons which comprises the step of contacting said oxygenated hydrocarbons with a catalyst comprising an admixture of a crystalline aluminosilicate zeolite and a low surface area, low acidity diluent, said diluent being characterized as having a surface area of less than about 25 m 2 /gm and Hammet acid function value of at least about 3, at conditions sufficient to convert at least a portion of said oxygenated hydrocarbons into hydrocarbons.
Claim 2
Dependent Claim
78 words
A process for converting oxygenated hydrocarbons into hydrocarbons which comprises the step of contacting said oxygenated hydrocarbons with a catalyst comprising an admixture of a crystalline aluminosilicate zeolite and a low surface area, low acidity diluent, said diluent being characterized as having a surface area of less than about 25 m 2 /gm and Hammet acid function value of at least about 3, at conditions sufficient to convert at least a portion of said oxygenated hydrocarbons into hydrocarbons.
Claim 3
Dependent Claim
22 words
The process of claim 1 wherein the crystalline aluminosilicate zeolite has a silica to alumina molar ratio of at least about 12.
Claim 4
Dependent Claim
20 words
The process of claim 2 wherein said crystalline aluminosilicate is selected from the group consisting of ZSM-5, TMA-offretite, and silicalite.
Claim 5
Dependent Claim
20 words
The process of claim 2 wherein said crystalline aluminosilicate has a pore size of from about 5.3 to 6.0 A.
Claim 6
Dependent Claim
21 words
The process of claim 2 wherein the weight ratio of crystalline aluminosilicate to diluent varies from about 0.01 to about 0.50.
Claim 7
Dependent Claim
16 words
The process of claim 2 wherein said oxygenated hydrocarbons have from 5 to 18 carbon atoms.
Claim 8
Dependent Claim
47 words
The process of claim 6 wherein said converting occurs at a temperature of from about 275° C. to about 425° C., a weight hourly space velocity of from about 0.1 to about 10 hr. -1 and a pressure of from about 1 to about 100 atmospheres absolute.
Claim 9
Dependent Claim
17 words
The process of claim 7 wherein said converting occurs in the substantial absence of an oxidizing gas.
Claim 10
Dependent Claim
14 words
The process of claim 8 wherein said converting occurs in the presence of steam.
Claim 11
Dependent Claim
20 words
The process of claim 8 wherein said oxygenated hydrocarbon is selected from the group consisting of α-methylglucoside and tetrahydrofurfuryl alcohol.
Claim 12
Dependent Claim
51 words
The process of claim 8 wherein said oxygenated hydrocarbons have an R value <1, wherein R is defined in accordance with the formula R=(m=2p)/n wherein m is the number of hydrogen atoms, p is the number of oxygen atoms, and n is the number of carbon atoms in said oxygenated hydrocarbon.
Claim 13
Dependent Claim
42 words
The process of claim 8 wherein said hydrocarbons are a mixture of aliphatic and aromatic hydrocarbons having a full boiling range of from about 30° to about 220° C. and are suitable for use as a motor fuel for internal combustion engines.
Claim 14
Dependent Claim
22 words
The process of claim 1 wherein said crystalline aluminosilicate zeolite is supported on a low surface area, low acidity diluent comprising silica.
Claim 15
Dependent Claim
21 words
The process of claim 13 wherein the weight ratio of crystalline aluminosilicate to diluent varies from about 0.01 to about 0.50.
References Cited (Backward Citations)
US4060568A
Cited
US4197418A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-03-15 | 1985-09-14 | 1986-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-15 | 1989-09-14 | 1990-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-15 | 1993-09-14 | 1994-03-16 | $7700.00 | Window Closed / Lapsed |