US4038172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for removal of oxygen from oxygen-containing compounds
Assignee: National Institute of Advanced Industrial Science and Technology
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Filing: 1975-10-09
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Granted: 1977-07-26
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Expires: 1995-10-09
Abstract
Abstract Removal of oxygen from an oxygen-containing compound and its conversion into an organic substance of a lower molecular weight is accomplished by causing the compound to react with water and carbon monoxide in the presence of a red clay catalyst.
Inventors
- 👤 Shigeru Ueda
- 👤 Shinichi Yokoyama
- 👤 Yoshinori Nakata
- 👤 Yoshihisa Hasegawa
- 👤 Yosuke Maekawa
- 👤 Yuji Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:07
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/08; B; B01; B01J; B01J21/00; B01J21/16; C10G1/086
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A method for the treatment of an oxygen-containing compound selected from the group consisting of bituminous coal, sub-bituminous coal, brown coal, lignite, grass peat, wood, paper, lignin substances and petrolic asphalts, which comprises mixing said oxygen-containing compound with 10 to 100% by weight of water and 1 to 10% by weight of a red clay catalyst composition comprised, by weight, of 18 - 25% Al 2 O 3 , 15 - 20% SiO 2 , 30 - 40% Fe 2 O 3 , 2 - 8% TiO 2 and approximately 8 - 12% ignition loss, based on the composition, the percentages of water and catalyst being respectively based on said compound, heating the resultant mixture at a temperature in the range of from 250 to 500° C. and simultaneously compressing the mixture with carbon monoxide to 1 to 300 atmospheres for one to 100 minutes and thereby removing the oxygen from said compound and at the same time converting said compound into an organic substance of a lower molecular weight.
Claim 2
Independent Claim
170 words
A method for the treatment of an oxygen-containing compound selected from the group consisting of bituminous coal, sub-bituminous coal, brown coal, lignite, grass peat, wood, paper, lignin substances and petrolic asphalts, which comprises mixing said oxygen-containing compound with 10 to 100% by weight of water and 1 to 10% by weight of a red clay catalyst composition comprised, by weight, of 18 - 25% Al 2 O 3 , 15 - 20% SiO 2 , 30 - 40% Fe 2 O 3 , 2 - 8% TiO 2 and approximately 8 - 12% ignition loss, based on the composition, the percentages of water and catalyst being respectively based on said compound, heating the resultant mixture at a temperature in the range of from 250 to 500° C. and simultaneously compressing the mixture with carbon monoxide to 1 to 300 atmospheres for one to 100 minutes and thereby removing the oxygen from said compound and at the same time converting said compound into an organic substance of a lower molecular weight.
References Cited (Backward Citations)
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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) | 1980-07-25 | 1981-01-24 | 1981-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-25 | 1985-01-24 | 1985-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-25 | 1989-01-24 | 1989-07-26 | $7700.00 | Window Closed / Lapsed |