US4665270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of hydrocarbons from hetero-substituted alkanes
Assignee: BP PLC
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Filing: 1984-12-13
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Granted: 1987-05-12
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Expires: 2004-12-13
Abstract
Abstract A product comprising hydrocarbons having at least 2 carbon atoms is produced by contacting a monohalomethane at elevated temperature, e.g. 200° to 600° C., with a synthetic crystalline aluminosilicate zeolite having a silica to alumina molar ration of at least 12:1 and containing cations of either hydrogen, copper or a metal capable of forming an amphoteric oxide, which cations are introduced either by exchange and/or by deposition, provided that when the cation is hydrogen the zeolite is Theta-1. At temperatures below 330° C. the product predominantly comprises aliphatic hydrocarbons, of which a substantial proportion is isoalkanes and isoalkenes.
Inventors
- 👤 John H. Brophy
- 👤 Josephus J. H. J. Font Freide
- 👤 Jeremy D. Tomkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:57
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/26; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/70
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
66 words
A process for the conversion of a monohalomethaane to a product comprising hydrocarbons having at least 2 carbon atoms which process comprises contacting the monohalomethane at elevated temperature with a synthetic crystalline aluminosilicate zeolite having a silica to alumina molar ratio of at least 12:1 and containing cations of hydrogen ions, which cations are introduced either by exchange and/or deposition, and wherein the zeolite is Theta-1.
Claim 2
Dependent Claim
66 words
A process for the conversion of a monohalomethaane to a product comprising hydrocarbons having at least 2 carbon atoms which process comprises contacting the monohalomethane at elevated temperature with a synthetic crystalline aluminosilicate zeolite having a silica to alumina molar ratio of at least 12:1 and containing cations of hydrogen ions, which cations are introduced either by exchange and/or deposition, and wherein the zeolite is Theta-1.
Claim 3
Dependent Claim
18 words
A process according to claim 1 wherein the elevated temperature is in the range 80° to 600° C.
Claim 4
Dependent Claim
22 words
A process according to claim 2 wherein the temperature is below about 330° C. and the hydrocarbon product predominantly comprises aliphatic hydrocarbons.
Claim 5
Dependent Claim
17 words
A process according to claim 3 wherein the temperature is in the range 200° to 330° C.
Claim 6
Dependent Claim
23 words
A process according to claim 1 wherein the monohalomethane is obtained by halogenation or oxyhalogenation of methane in admixture with ethane and/or propane.
Claim 7
Dependent Claim
11 words
A process according to claim 1 wherein the monohalomethane is monochloromethane.
Claim 8
Dependent Claim
18 words
A process according to claim 4, wherein the temperature is in the range of 200° to 260° C.
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) | 1990-05-11 | 1990-11-10 | 1991-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-11 | 1994-11-10 | 1995-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-11 | 1998-11-10 | 1999-05-12 | $7700.00 | Window Closed / Lapsed |