US4042332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation method of methane from other hydrocarbons than methane
Assignee: Horiba Ltd
•
Filing: 1976-02-10
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Granted: 1977-08-16
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Expires: 1996-02-10
Abstract
Abstract A method for the separation of methane from a gaseous mixture containing methane and at least one of ethane and propane which comprises A. simultaneously passing said gaseous mixture and oxygen over a catalyst comprising platinum on an active carbon carrier; B. selectively oxidizing the ethane and propane in said gaseous mixture at a temperature of about 170° C and C. recovering methane from said mixture.
Inventors
- 👤 Osamu Saitoh
- 👤 Masakatu Imaki
- 👤 Hazime Asami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:50
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/005; C; C07; C07C; C07C7/00; C07C7/148; C07C7/14808; C07C7/14816; Y; Y10; Y10T; Y10T436/00; Y10T436/21; Y10T436/214; Y10T436/25; Y10T436/25125
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
66 words
A method for the separation of methane from a gaseous mixture containing methane and at least one of ethane and propane which comprises a. simultaneously passing said gaseous mixture and oxygen over a catalyst comprising platinum on an active carbon carrier; b. selectively oxidizing the ethane and propane in said gaseous mixture at a temperature of about 170° C and c. recovering methane from said mixture.
Claim 2
Independent Claim
66 words
A method for the separation of methane from a gaseous mixture containing methane and at least one of ethane and propane which comprises a. simultaneously passing said gaseous mixture and oxygen over a catalyst comprising platinum on an active carbon carrier; b. selectively oxidizing the ethane and propane in said gaseous mixture at a temperature of about 170° C and c. recovering methane from said mixture.
Claim 3
Dependent Claim
16 words
A method according to claim 1 wherein said catalyst is in the form of spheroidal particles.
Claim 4
Dependent Claim
16 words
A method according to claim 2 wherein said particles are 0.5 to 1.0 mm. in diameter.
Claim 5
Dependent Claim
19 words
A method according to claim 1 wherein said catalyst contains platinum in an amount of about 10% by weight.
Claim 6
Dependent Claim
22 words
A method according to claim 1 wherein said catalyst further comprises palladium in an amount of about 0.5 to 1% by weight.
Claim 7
Dependent Claim
22 words
A method according to claim 4 wherein said catalyst further comprises palladium in an amount of about 0.5 to 1% by weight.
Claim 8
Dependent Claim
72 words
A method according to claim 1 wherein said gaseous mixture additionally contains hydrocarbons other than methane, ethane and propane and wherein said hydrocarbons are more readily oxidized than methane, ethane and propane, which method comprises selectively oxidizing said hydrocarbons other than methane, ethane and propane in a first reaction vessel to obtain an effluent containing methane, ethane and propane and then selectively oxidizng said ethane and propane in a second reaction vessel.
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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) | 1980-08-15 | 1981-02-14 | 1981-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-15 | 1985-02-14 | 1985-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-15 | 1989-02-14 | 1989-08-16 | $7700.00 | Window Closed / Lapsed |