US3911041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of methanol and dimethyl ether
Assignee: Mobil Oil AS
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Filing: 1974-09-23
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Granted: 1975-10-07
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Expires: 1994-09-23
Abstract
Abstract Methanol and dimethyl ether are converted to a reaction product containing olefins. The conversion is carried out employing a catalyst comprising a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least about 12, a constraint index of about 1 to 12, and containing phosphorus incorporated with the crystal structure thereof in an amount of at least about 0.78 percent by weight.
Inventors
- 👤 Warren W Kaeding
- 👤 Stephen A Butter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:44
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/095; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/40; B01J37/00; B01J37/28; C07; C07C; C07C1/00; C07C1/20; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/12; C07C2/54; C07C2/64; C07C2/66; C07C2/86; C07C2/861; C07C2/862; C07C2/864; C07C2/865; C07C2/868; C07C4/00; C07C4/02; C07C4/06; B01J29/18; B01J29/65; B01J29/70; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/40; C07C2529/65; C07C2529/70; C10G2400/00; C10G2400/20; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
72 words
A PROCESS FOR THE COMVERSION OF METHANOL OR DIMETHYL ETHER COMPRISING CONTACTING SAID METHANOL OR DIMETHYL ETHER AT A TEMPERATURE OF T LEAST ABOUT 300*C WITH A CATALYST COMPRISING A CRYSTALLINE ALUMINOSILICATE ZEOLITE HAVING A SILICA TO ALUMINA RATIO OF AT LEAST ABOUT 112, A CONSTRAINT INDEX OF ABOUT 1 TO 12, AND CONTAINING PHOSPHORUS INCORPORATED WITH THE CRYSTAL STRUCTURE THEREOF IN AN AMOUNT OF AT LEAST ABOUT 0.78 PERCENT BY WEIGHT.
Claim 2
Dependent Claim
72 words
A PROCESS FOR THE COMVERSION OF METHANOL OR DIMETHYL ETHER COMPRISING CONTACTING SAID METHANOL OR DIMETHYL ETHER AT A TEMPERATURE OF T LEAST ABOUT 300*C WITH A CATALYST COMPRISING A CRYSTALLINE ALUMINOSILICATE ZEOLITE HAVING A SILICA TO ALUMINA RATIO OF AT LEAST ABOUT 112, A CONSTRAINT INDEX OF ABOUT 1 TO 12, AND CONTAINING PHOSPHORUS INCORPORATED WITH THE CRYSTAL STRUCTURE THEREOF IN AN AMOUNT OF AT LEAST ABOUT 0.78 PERCENT BY WEIGHT.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein methanol is contacted with said catalyst.
Claim 4
Dependent Claim
13 words
The process of claim 1 wherein dimethyl ether is contacted with said catalyst.
Claim 5
Dependent Claim
23 words
The process of claim 1 wherein said zeolite has a dried crystal density of not less than about 1.6 grams per cubic centimeter.
Claim 6
Dependent Claim
12 words
The process of claim 1 wherein said catalyst is impregnated with zinc.
Claim 7
Dependent Claim
20 words
The process of claim 5 wherein said catalyst is impregnated with zinc in the amount of 1 percent by weight.
Claim 8
Dependent Claim
22 words
The process of claim 1 wherein said catalyst contains said phosphorus in an amount of at least about 2.5 percent by weight.
Claim 9
Dependent Claim
22 words
The process of claim 1 wherein said catalyst contains said phosphorus in an amount between about 0.78 and 4.5 percent by weight.
Claim 10
Dependent Claim
26 words
The process of claim 1 wherein said methanol or said dimethyl ether is contacted with said catalyst at a temperature of at least about 350* C.
Claim 11
Dependent Claim
27 words
The process of claim 1 wherein said methanol or said dimethyl ether is contacted with said catalyst at a temperature of about 300* C to 700* C.
Claim 12
Dependent Claim
17 words
The process of claim 1 wherein said methanol or said dimethyl ether is in the vapor phase.
Claim 13
Dependent Claim
32 words
The process of claim 1 wherein said methanol or said dimethyl ether is contacted with said catalyst by passing said methanol or said dimethyl ether over a fixed bed of said catalyst.
Claim 14
Dependent Claim
31 words
The process of claim 1 wherein said methanol or said dimethyl ether is passed over said bed of catalyst at a weight per hour space velocity of about 1.5 to 14.5.
Claim 15
Dependent Claim
29 words
The process of claim 1 wherein said catalyst is ZSM-5 containing phosphorus incorporated with the crystal structure thereof in an amount of at least about 0.78 percent by weight.
Claim 16
Dependent Claim
29 words
The process of claim 1 wherein aid catalyst is ZSM-11 containing phosphorus incorporated with the crystal structure thereof in an amount of at least about 0.78 percent by weight.
Claim 17
Dependent Claim
29 words
The process of claim 1 wherein said catalyst is ZSM-12 containing phosphorus incorporated with the crystal structure thereof in an amount of at least about 0.78 percent by weight.
Claim 18
Dependent Claim
29 words
The process of claim 1 wherein said catalyst is ZSM-21 containing phosphorus incorporated with the crystal structure thereof in an amount of at least about 0.78 percent by weight.
Claim 19
Dependent Claim
30 words
The process of claim 1 wherein said catalyst is TEA mordenite containing phosphorus incorporated with the crystal structure thereof in an amount of at least about 0.78 percent by weight.
Claim 20
Dependent Claim
101 words
A process for the conversion of methanol or dimethyl ether comprising contacting said methanol or dimethyl ether at a temperature of about 300*C to 700* C with a catalyst comprising a crystalline aluminosilicate having a silica to alumina ratio of at least about 12, a constraint index of about 1 to 12, a dried crystal density of not less than about 1.6 grams per cubic centimeter, and containing phosphorus incorporated with the crystal structure thereof in an amount of about 0.78 to 4.5 percent by weight, by passing said methanol or said dimethyl ether over a fixed bed of said catalyst.
Claim 21
Dependent Claim
101 words
A process for the conversion of methanol or dimethyl ether comprising contacting said methanol or dimethyl ether at a temperature of about 300*C to 700* C with a catalyst comprising a crystalline aluminosilicate having a silica to alumina ratio of at least about 12, a constraint index of about 1 to 12, a dried crystal density of not less than about 1.6 grams per cubic centimeter, and containing phosphorus incorporated with the crystal structure thereof in an amount of about 0.78 to 4.5 percent by weight, by passing said methanol or said dimethyl ether over a fixed bed of said catalyst.
Claim 22
Dependent Claim
31 words
The process of claim 19 wherein said methanol or said dimethyl ether is passed over said bed of catalyst at a weight per hour space velocity of about 1.5 to 14.5.
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) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |