US4450310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of methane to olefins and hydrogen
Assignee: Standard Oil Co
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Filing: 1983-03-04
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Granted: 1984-05-22
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Expires: 2003-03-04
Abstract
Abstract A methane conversion process is provided for the production of olefins and hydrogen comprising contacting methane in the absence of oxygen and in the absence of water at a reaction temperature of at least 500° C. with a catalyst comprising the mixed oxides of a first metal selected from lithium, sodium, potassium, rubidium, cesium and mixtures thereof, a second metal selected from beryllium, magnesium, calcium, strontium, barium, and mixtures thereof, and optionally a promoter metal selected from copper, rhenium, tungsten, zirconium, rhodium, and mixtures thereof.
Inventors
- 👤 Joseph R. Fox
- 👤 Benedict S. Curatolo
- 👤 Frederick A. Pesa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:00
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/76; B; B01; B01J; B01J23/00; B01J23/02; B01J23/04; B01J23/16; B01J23/24; B01J23/30; B01J23/32; B01J23/36; B01J23/38; B01J23/54; B01J23/56; B01J23/58; B01J23/70; B01J23/76; B01J23/78; C07C2521/00; C07C2521/10; C07C2523/00; C07C2523/02; C07C2523/04; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/943
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
64 words
A process for the conversion of methane comprising contacting methane in the absence of oxygen and in the absence of water at a temperature of at least 500° C. with a catalyst comprising the mixed oxides of a first metal selected from lithium, sodium, potassium, rubidium, cesium and mixtures thereof and a second metal selected from beryllium, magnesium, calcium, strontium, barium and mixtures thereof.
Claim 2
Dependent Claim
64 words
A process for the conversion of methane comprising contacting methane in the absence of oxygen and in the absence of water at a temperature of at least 500° C. with a catalyst comprising the mixed oxides of a first metal selected from lithium, sodium, potassium, rubidium, cesium and mixtures thereof and a second metal selected from beryllium, magnesium, calcium, strontium, barium and mixtures thereof.
Claim 3
Dependent Claim
12 words
A process as in claim 1 wherein said first metal comprises sodium.
Claim 4
Dependent Claim
12 words
A process as in claim 1 wherein said second metal comprises calcium.
Claim 5
Dependent Claim
27 words
A process as in claim 1 wherein said catalyst additionally comprises an oxide of a promoter metal selected from copper, rhenium, tungsten, zirconium, rhodium, and mixtures thereof.
Claim 6
Dependent Claim
18 words
A process as in claim 1 wherein said temperature is between about 700° C. to about 1000° C.
Claim 7
Dependent Claim
51 words
A process for the conversion of methane comprising contacting methane in the absence of oxygen and in the absence of water at a reaction temperature of at least 500° C. with a catalyst consisting essentially of an oxide of a metal selected from beryllium, magnesium, calcium, strontium, barium and mixtures thereof.
Claim 8
Dependent Claim
51 words
A process for the conversion of methane comprising contacting methane in the absence of oxygen and in the absence of water at a reaction temperature of at least 500° C. with a catalyst consisting essentially of an oxide of a metal selected from beryllium, magnesium, calcium, strontium, barium and mixtures thereof.
Claim 9
Dependent Claim
12 words
A process as in claim 6 wherein said catalyst contains calcium oxide.
Claim 10
Dependent Claim
12 words
A process as in claim 6 wherein said catalyst contains magnesium oxide.
Claim 11
Dependent Claim
19 words
A process as in claim 6 wherein said reaction temperature is between about 700° C. and about 1000° C.
Claim 12
Dependent Claim
67 words
A process for the conversion of methane comprising contacting methane in the absence of oxygen and in the absence of water at a reaction temperature of at least 500° C. with a catalyst consisting essentially of the mixed oxides of a first metal selected from beryllium, magnesium, calcium, strontium, barium and mixtures thereof, and a second metal selected from copper, rhenium, tungsten, zirconium, rhodium, and mixtures thereof.
Claim 13
Dependent Claim
67 words
A process for the conversion of methane comprising contacting methane in the absence of oxygen and in the absence of water at a reaction temperature of at least 500° C. with a catalyst consisting essentially of the mixed oxides of a first metal selected from beryllium, magnesium, calcium, strontium, barium and mixtures thereof, and a second metal selected from copper, rhenium, tungsten, zirconium, rhodium, and mixtures thereof.
Claim 14
Dependent Claim
19 words
A process as in claim 10 wherein said reaction temperature is between about 700° C. and about 1000° C.
Claim 15
Dependent Claim
12 words
A process as in claim 10 wherein said catalyst contains calcium oxide.
Claim 16
Dependent Claim
26 words
A process as in claim 10 wherein said catalyst contains said second metal in an amount of about 2 percent to about 5 percent by weight.
Claim 17
Dependent Claim
12 words
A process as in claim 10 wherein said second metal is rhodium.
Claim 18
Dependent Claim
12 words
A process as in claim 10 wherein said second metal is rhenium.
Claim 19
Dependent Claim
12 words
A process as in claim 10 wherein said second metal is copper.
Claim 20
Dependent Claim
12 words
A process as in claim 10 wherein said second metal is zirconium.
Claim 21
Dependent Claim
12 words
A process as in claim 10 wherein said second metal is tungsten.
Claim 22
Dependent Claim
91 words
A process for the conversion of methane comprising contacting methane in the absence of oxygen and in the absence of water at a temperature of at least 500° C. with a super base solid catalyst having a base strength defined by the equation H.sub.- =pK.sub.BH -log C.sub.BH /C.sub.B- wherein pK BH is the negative log of the dissociation constant of the protonated form of the base, C B- is the concentration of the unprotonated form of the base, and wherein H - for the catalyst is between about +26 and +40.
Claim 23
Dependent Claim
91 words
A process for the conversion of methane comprising contacting methane in the absence of oxygen and in the absence of water at a temperature of at least 500° C. with a super base solid catalyst having a base strength defined by the equation H.sub.- =pK.sub.BH -log C.sub.BH /C.sub.B- wherein pK BH is the negative log of the dissociation constant of the protonated form of the base, C B- is the concentration of the unprotonated form of the base, and wherein H - for the catalyst is between about +26 and +40.
Claim 24
Dependent Claim
20 words
A process as in claim 19 wherein said catalyst comprises an alkali metal deposited onto an alkaline earth metal oxide.
Claim 25
Dependent Claim
15 words
A process as in claim 20 wherein said catalyst comprises sodium deposited on magnesium oxide.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-22 | 1987-11-21 | 1988-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-22 | 1991-11-21 | 1992-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-22 | 1995-11-21 | 1996-05-22 | $7700.00 | Window Closed / Lapsed |