US4080312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid catalysts for oxidative dehydrogenation of alkenes or alkadienes to furan compounds
Assignee: Phillips Petroleum Co
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Filing: 1975-09-11
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Granted: 1978-03-21
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Expires: 1995-09-11
Abstract
Abstract Alkenes and/or alkadienes are contacted with molecular oxygen and an oxidative dehydrogenation catalyst consisting essentially of phosphorus, vanadium, oxygen, and at least one promoter selected from the group consisting of iron, cobalt, nickel, and molybdenum to produce furan compounds.
Inventors
- 👤 Floyd E. Farha, Jr.
- 👤 Marvin M. Johnson
- 👤 Donald C. Tabler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:39
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/847; B01J23/8472; B01J23/16; B01J23/24; B01J23/28; B01J27/00; B01J27/14; B01J27/186; B01J27/195; B01J27/198; C; C07; C07D; C07D307/00; C07D307/02; C07D307/34; C07D307/36
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
91 words
A calcined unsupported catalyst composition consisting essentially of phosphorus, vanadium, oxygen and molybdenum, wherein the atom ratio of molybdenum/vanadium is about 8:1 and the atom ratio of the total of molybdenum and vanadium to phosphorus is in the range of about 40:1 to about 7:1, and wherein the calcination of the unsupported catalyst composition was conducted at a temperature in the range of about 800° F to about 1500° F for a time in the range of about 1 to about 40 hours in the presence of a molecular oxygen-containing gas.
Claim 2
Dependent Claim
91 words
A calcined unsupported catalyst composition consisting essentially of phosphorus, vanadium, oxygen and molybdenum, wherein the atom ratio of molybdenum/vanadium is about 8:1 and the atom ratio of the total of molybdenum and vanadium to phosphorus is in the range of about 40:1 to about 7:1, and wherein the calcination of the unsupported catalyst composition was conducted at a temperature in the range of about 800° F to about 1500° F for a time in the range of about 1 to about 40 hours in the presence of a molecular oxygen-containing gas.
Claim 3
Dependent Claim
30 words
A calcined unsupported catalyst composition in accordance with claim 1 wherein said composition has a catalytic surface area in the range of about 0.05 to about 20 m 2 /g.
Claim 4
Dependent Claim
30 words
A calcined unsupported catalyst composition in accordance with claim 1 wherein said composition has a catalytic surface area in the range of about 0.1 to about 5 m 2 /g.
Claim 5
Dependent Claim
89 words
A calcined unsupported catalyst composition consisting of phosphorus, vanadium, oxygen and molybdenum, wherein the atom ratio of molybdenum/vanadium is about 8:1 and the atom ratio of the total of molybdenum and vanadium to phosphorus is in the range of 40:1 to about 7:1, and wherein the calcination of the unsupported catalyst composition was conducted at a temperature in the range of about 800° F to about 1500° F for a time in the range of about 1 to about 40 hours in the presence of a molecular oxygen-containing gas.
Claim 6
Dependent Claim
89 words
A calcined unsupported catalyst composition consisting of phosphorus, vanadium, oxygen and molybdenum, wherein the atom ratio of molybdenum/vanadium is about 8:1 and the atom ratio of the total of molybdenum and vanadium to phosphorus is in the range of 40:1 to about 7:1, and wherein the calcination of the unsupported catalyst composition was conducted at a temperature in the range of about 800° F to about 1500° F for a time in the range of about 1 to about 40 hours in the presence of a molecular oxygen-containing gas.
Claim 7
Dependent Claim
30 words
A calcined unsupported catalyst composition in accordance with claim 4 wherein said composition has a catalytic surface area in the range of about 0.05 to about 20 m 2 /g.
Claim 8
Dependent Claim
30 words
A calcined unsupported catalyst composition in accordance with claim 4 wherein said composition has a catalytic surface area in the range of about 0.1 to about 5 m 2 /g.
References Cited (Backward Citations)
US3230248A
Cited
US3352905A
Cited
US3478063A
Cited
US3523135A
Cited
US3697550A
Cited
US3832359A
Cited
US3875220A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-20 | 1981-09-19 | 1982-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-20 | 1985-09-19 | 1986-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-20 | 1989-09-19 | 1990-03-21 | $7700.00 | Window Closed / Lapsed |