US3979472A
Expired / Lapsed
US
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Process for manufacturing hydrocarbons
Assignee: Mobil Oil AS
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Filing: 1975-03-28
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Granted: 1976-09-07
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Expires: 1995-03-28
Abstract
Abstract A catalytic process, employing a novel catalyst, for converting lower monohydric alcohols and their ethers, especially methanol and dimethyl ether, to a hydrocarbon mixture mostly ethylene, propylene and mononuclear aromatics. The novel catalyst is a composite of antimony oxide and a crystalline aluminosilicate zeolite such as ZSM-5.
Inventors
- 👤 Stephen A. Butter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:59
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/40; B01J29/48; C; C07; C07C; C07C1/00; C07C1/20; C10; C10G; C10G3/00; C10G3/42; C10G3/44; C10G3/48; C10G3/49; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/40; C07C2529/48; C10G2300/00; C10G2300/40; C10G2300/4006; C10G2300/4012; C10G2300/4018; C10G2300/70; C10G2300/703; C10G2400/00; C10G2400/20; C10G2400/30; Y; Y02; Y02P; Y02P30/00; Y02P30/20; Y02P30/40
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
104 words
A process for producing hydrocarbons which comprises: contacting, under conversion conditions, a feed consisting essentially of one or more lower monohydric alcohol having up to four carbon atoms, the ethers derived therefrom, or mixtures of said alcohols and ethers, with a catalyst comprising an intimate admixture of an oxide of antimony and a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least about 12 and a constraint index from 1 to 12, said antimony oxide constituting at least 1% by weight of said admixture, whereby is formed a mixture comprising light olefins, monocyclic aromatic hydrocarbons, and water; and, recovering said hydrocarbons.
Claim 2
Dependent Claim
104 words
A process for producing hydrocarbons which comprises: contacting, under conversion conditions, a feed consisting essentially of one or more lower monohydric alcohol having up to four carbon atoms, the ethers derived therefrom, or mixtures of said alcohols and ethers, with a catalyst comprising an intimate admixture of an oxide of antimony and a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least about 12 and a constraint index from 1 to 12, said antimony oxide constituting at least 1% by weight of said admixture, whereby is formed a mixture comprising light olefins, monocyclic aromatic hydrocarbons, and water; and, recovering said hydrocarbons.
Claim 3
Dependent Claim
36 words
The process of claim 1 wherein said conversion conditions include a space velocity of about 0.5 to 50 WHSV, a temperature of about 300°C to about 550°C, and a pressure of about 0.2 to 30 atmospheres.
Claim 4
Dependent Claim
15 words
The process of claim 2 wherein said feed is methanol, dimethyl ether or mixtures thereof.
Claim 5
Dependent Claim
12 words
The process of claim 1 wherein said crystalline aluminosilicate zeolite is HZSM-5.
Claim 6
Dependent Claim
22 words
The process of claim 1 wherein the ratio of antimony oxide to crystalline aluminosilicate zeolite is from about 0.01 to about 0.50.
Claim 7
Dependent Claim
21 words
The process of claim 1 wherein the ratio of antimony oxide to crystalline aluminosilicate zeolite is from about 0.03 to 0.30.
Claim 8
Dependent Claim
17 words
The process of claim 6 wherein said feed consists essentially of methanol, dimethyl ether or mixtures thereof.
Claim 9
Dependent Claim
73 words
A novel catalyst composition useful for converting lower alcohols to petrochemical-type hydrocarbons, which comprises a composite of antimony oxide and a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least about 12, a constraint index of from 1 to 12, and a dried crystal density in the hydrogen form not less than about 1.6 grams per cubic centimeter, wherein said composite contains at least 1% by weight of antimony oxide.
Claim 10
Dependent Claim
73 words
A novel catalyst composition useful for converting lower alcohols to petrochemical-type hydrocarbons, which comprises a composite of antimony oxide and a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least about 12, a constraint index of from 1 to 12, and a dried crystal density in the hydrogen form not less than about 1.6 grams per cubic centimeter, wherein said composite contains at least 1% by weight of antimony oxide.
Claim 11
Dependent Claim
31 words
A novel catalyst composition as described in claim 8, wherein said zeolite is HZSM-5 and wherein the ratio of said antimony oxide to crystalline aluminosilicate is from about 0.01 to 0.50.
Claim 12
Independent Claim
58 words
A method for preparing a catalytic composition useful in the conversion of alcohols to hydrocarbon mixtures, which comprises: heating together a solution of antimony trimethoxide and a crystalline aluminosilicate zeolite for a time sufficient to form an intimate mixture of said zeolite and an insoluble antimony compound; recovering said intimate mixture; and calcining said recovered mixture in air.
Claim 13
Independent Claim
58 words
A method for preparing a catalytic composition useful in the conversion of alcohols to hydrocarbon mixtures, which comprises: heating together a solution of antimony trimethoxide and a crystalline aluminosilicate zeolite for a time sufficient to form an intimate mixture of said zeolite and an insoluble antimony compound; recovering said intimate mixture; and calcining said recovered mixture in air.
Claim 14
Dependent Claim
12 words
The method of claim 10 wherein said crystalline aluminosilicate zeolite is H-ZSM-5.
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) | 1979-09-07 | 1980-03-08 | 1980-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-07 | 1984-03-08 | 1984-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-07 | 1988-03-08 | 1988-09-07 | $7700.00 | Window Closed / Lapsed |