US4079096A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of light olefins
Assignee: Mobil Oil AS
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Filing: 1976-11-04
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Granted: 1978-03-14
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Expires: 1996-11-04
Abstract
Abstract A catalytic process is provided for converting a charge consisting essentially of methanol, dimethyl ether or mixtures thereof to a hydrocarbon product rich in ethylene and propylene by contact, under conversion conditions, with a catalyst comprising the crystalline aluminosilicate zeolite designated "ZSM-34".
Inventors
- 👤 Edwin N. Givens
- 👤 Charles J. Plank
- 👤 Edward J. Rosinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:24
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/20; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/50; B01J2229/00; B01J2229/30; B01J2229/36; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/50; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52; Y02P30/00; Y02P30/20; Y02P30/40; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
74 words
A catalytic process for converting a charge consisting essentially of methanol, dimethyl ether or mixtures thereof to a hydrocarbon product rich in ethylene and propylene which comprises contacting said charge under conversion conditions including a temperature between about 500° F and about 1000° F, a pressure from about 0.1 to 30 atmospheres and a weight hourly space velocity of between about 0.1 and about 30 with a catalyst comprising the crystalline aluminosilicate zeolite ZSM-34.
Claim 2
Dependent Claim
74 words
A catalytic process for converting a charge consisting essentially of methanol, dimethyl ether or mixtures thereof to a hydrocarbon product rich in ethylene and propylene which comprises contacting said charge under conversion conditions including a temperature between about 500° F and about 1000° F, a pressure from about 0.1 to 30 atmospheres and a weight hourly space velocity of between about 0.1 and about 30 with a catalyst comprising the crystalline aluminosilicate zeolite ZSM-34.
Claim 3
Dependent Claim
18 words
The process of claim 1 wherein ethylene and propylene constitute a major proportion of the hydrocarbon reaction product.
Claim 4
Dependent Claim
16 words
The process of claim 2 wherein the ethylene content of said product exceeds the propylene content.
Claim 5
Dependent Claim
38 words
The process of claim 1 wherein the amount of ethylene and propylene produced is in excess of 35 weight percent and the amount of methane produced is not more than 10 weight percent of the hydrocarbon reaction product.
Claim 6
Dependent Claim
10 words
The process of claim 1 wherein said charge is methanol.
Claim 7
Dependent Claim
25 words
The process of claim 1 wherein said crystalline aluminosilicate has been thermally treated at a temperature of from about 200° C to about 750° C.
Claim 8
Dependent Claim
29 words
The process of claim 6 wherein at least 10 percent of the cationic sites of said crystalline aluminosilicate are occupied by ions other than alkali or alkaline earth metals.
Claim 9
Dependent Claim
24 words
The process of claim 7 wherein said ions are hydrogen, hydrogen precursors, metals from Groups IB, II, III, VIIB, VIII or rare earth metals.
Claim 10
Dependent Claim
16 words
The process of claim 7 wherein said ions are ammonium, hydrogen, rare earth or combinations thereof.
Claim 11
Dependent Claim
16 words
The process of claim 1 wherein said crystalline aluminosilicate zeolite is predominantly in the hydrogen form.
Claim 12
Dependent Claim
16 words
The process of claim 1 wherein said crystalline aluminosilicate zeolite is contained in a matrix therefor.
Claim 13
Dependent Claim
34 words
The process of claim 7 wherein said crystalline aluminosilicate has been subjected to steam treatment for 1 to about 100 hours at a temperature above about 700° F but less than about 1200° F.
References Cited (Backward Citations)
US3979472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-13 | 1981-09-12 | 1982-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-13 | 1985-09-12 | 1986-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-13 | 1989-09-12 | 1990-03-14 | $7700.00 | Window Closed / Lapsed |