Patent US3856881A successfully refreshed from Google Patents.
US3856881A
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Metal vanadite catalyzed oxidative dehydrogenation process
Assignee: Texas Petrochemicals Corp
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Filing: 1973-09-10
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Granted: 1974-12-24
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Expires: 1993-09-10
Abstract
Abstract Organic compounds can be oxidatively dehydrogenated using metal vanadite catalysts. For example, butene-2 is dehydrogenated to butadiene over a number of metal vanadites (e.g., Mg, Mn, Co, Zn and Li) in modest to excellent yields. The yield of dehydrogenated product can be improved by the presence of phosphorous in the metal vanadite catalyst, e.g., the yield of butadiene was 45 mole % with a Mg-V catalyst and 50 mole % with a Mg-P-V catalyst under similar conditions of operation. The presence of small quantities of halogen, for example 0.0001 to 0.5 mole per mole of hydrocarbon to be dehydrogenated, produces more improved yields of dehydrogenated product.
Inventors
- 👤 H Manning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:01
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/847; B01J23/8472; B01J23/16; B01J23/20; B01J23/22; B01J23/32; B01J23/34; B01J27/00; B01J27/14; B01J27/186; B01J27/195; B01J27/198; C; C07; C07C; C07C5/00; C07C5/42; C07C5/48; Y; Y10; Y10S; Y10S502/00; Y10S502/524
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
21 words
A PROCESS FOR THE DEHYDROGENATION OF HYDROCARBON COMPOUNDS HAVING 4 TO 5 NON-QUATERNARY CONTIGUOUS CARBON ATOMS AND HAVING AT LEAST ONE
Claim 2
Dependent Claim
21 words
A PROCESS FOR THE DEHYDROGENATION OF HYDROCARBON COMPOUNDS HAVING 4 TO 5 NON-QUATERNARY CONTIGUOUS CARBON ATOMS AND HAVING AT LEAST ONE
Claim 3
Dependent Claim
20 words
The process according to claim 1 wherein the hydrocarbon compound to be dehydrogenated comprises a hydrocarbon having four carbon atoms.
Claim 4
Dependent Claim
13 words
The process according to claim 1 wherein the hydrocarbon has five carbon atoms.
Claim 5
Dependent Claim
18 words
The process according to claim 1 wherein said crystalline spinel has a face centered cubic form of structure.
Claim 6
Dependent Claim
92 words
A process for the dehydrogenation of butene-1, butene-2, or mixtures thereof, to produce corresponding dehydrogenated compounds having the same number of carbon atoms as said compounds, said process comprising contacting in vapor phase at a temperature of greater than 250*C. a mixture of said compound or compounds to be dehydrogenated and from 0.2 to 2.5 moles of oxygen per mole of said compound or compounds to be dehydrogenated with a catalyst composition comprising crystalline spinel of the general formula M2VO4, MV2O4, between MV2O4 and M2VO4 or mixtures thereof wherein M is Mn.
Claim 7
Dependent Claim
92 words
A process for the dehydrogenation of butene-1, butene-2, or mixtures thereof, to produce corresponding dehydrogenated compounds having the same number of carbon atoms as said compounds, said process comprising contacting in vapor phase at a temperature of greater than 250*C. a mixture of said compound or compounds to be dehydrogenated and from 0.2 to 2.5 moles of oxygen per mole of said compound or compounds to be dehydrogenated with a catalyst composition comprising crystalline spinel of the general formula M2VO4, MV2O4, between MV2O4 and M2VO4 or mixtures thereof wherein M is Mn.
Claim 8
Dependent Claim
21 words
A process for the dehydrogenation of hydrocarbon compounds having 4 to 5 non-quaternary contiguous carbon atoms and having at least one
Claim 9
Dependent Claim
21 words
A process for the dehydrogenation of hydrocarbon compounds having 4 to 5 non-quaternary contiguous carbon atoms and having at least one
Claim 10
Dependent Claim
12 words
The process according to claim 6 wherein said catalyst composition contains phosphorous.
Claim 11
Dependent Claim
20 words
The process according to claim 7 wherein the hydrocarbon compound to be dehydrogenated comprises a hydrocarbon having four carbon atoms.
Claim 12
Dependent Claim
19 words
The process according to claim 8 wherein the hydrocarbon compound to be dehydrogenated comprises butene-1, butene-2 or mixtures thereof.
Claim 13
Dependent Claim
33 words
The process according to claim 8 wherein the said mixture of hydrocarbon compounds to be dehydrogenated and oxygen contains about 0.0001 to 0.5 mole of halogen per mole of hydrocarbon to be dehydrogenated.
Claim 14
Dependent Claim
31 words
The process according to claim 10 wherein said mixture of hydrocarbons to be dehydrogenated and oxygen contains about 0.0001 to 0.2 mole of halogen per mole of hydrocarbon to be dehydrogenated.
Claim 15
Dependent Claim
17 words
The process according to claim 7 wherein the hydrocarbon compound to be dehydrogenated has five carbon atoms.
Claim 16
Dependent Claim
16 words
A process for the dehydrogenation of hydrocarbon compounds having four carbon atoms and at least one
Claim 17
Dependent Claim
16 words
A process for the dehydrogenation of hydrocarbon compounds having four carbon atoms and at least one
Claim 18
Dependent Claim
21 words
A process for the dehydrogenation of hydrocarbon compounds having four to five non-quaternary contiguous carbon atoms and having at least one
Claim 19
Dependent Claim
21 words
A process for the dehydrogenation of hydrocarbon compounds having four to five non-quaternary contiguous carbon atoms and having at least one
Claim 20
Dependent Claim
20 words
The process according to claim 14 wherein the hydrocarbon compound to be dehydrogenated comprises a hydrocarbon having four carbon atoms.
Claim 21
Dependent Claim
19 words
The process according to claim 15 wherein the hydrocarbon compound to be dehydrogenated is butene-1, butene-2 or mixtures thereof.
Claim 22
Dependent Claim
13 words
The process according to claim 14 wherein the hydrocarbon has five carbon atoms.
Claim 23
Dependent Claim
18 words
The process according to claim 14 wherein said crystalline spinel has a face centered cubic form of structure.
Claim 24
Dependent Claim
92 words
A process for the dehydrogenation of butene-1, butene-2, or mixtures thereof, to produce corresponding dehydrogenated compounds having the same number of carbon atoms as said compounds, said process comprising contacting in vapor phase at a temperature of greater than 250*C. a mixture of said compound or compounds to be dehydrogenated and from 0.2 to 2.5 moles of oxygen per mole of said compound or compounds to be dehydrogenated with a catalyst composition comprising crystalline spinel of the general formula M2VO4, MV2O4, between MV2O4 and M2VO4 or mixtures thereof wherein M is Co.
Claim 25
Dependent Claim
92 words
A process for the dehydrogenation of butene-1, butene-2, or mixtures thereof, to produce corresponding dehydrogenated compounds having the same number of carbon atoms as said compounds, said process comprising contacting in vapor phase at a temperature of greater than 250*C. a mixture of said compound or compounds to be dehydrogenated and from 0.2 to 2.5 moles of oxygen per mole of said compound or compounds to be dehydrogenated with a catalyst composition comprising crystalline spinel of the general formula M2VO4, MV2O4, between MV2O4 and M2VO4 or mixtures thereof wherein M is Co.
References Cited (Backward Citations)
US2326258A
Cited
US3218368A
Cited
US3308196A
Cited
US3308191A
Cited
US3308200A
Cited
US3488402A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |