Patent US3914332A successfully refreshed from Google Patents.
US3914332A
Expired / Lapsed
US
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Oxidative dehydrogenation of butane
Assignee: Sun Ventures Inc
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Filing: 1973-11-23
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Granted: 1975-10-21
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Expires: 1993-11-23
Abstract
Abstract Butane may be oxidatively dehydrogenated to a mixture of 1-and 2-butenes and butadiene at high space velocities using a catalyst comprising V2O5, K2SO4, SO3 and SiO2.
Inventors
- 👤 Alan F Dickason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:18
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/42; C07C5/48; B; B01; B01J; B01J23/00; B01J23/16; B01J23/20; B01J23/22; B01J27/00; B01J27/02; B01J27/053; B01J27/055
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
95 words
A PROCESS FOR THE OXIDATIVE DEHYDROGENATION OF BUTANE TO FORM A MIXTURE OF BUTENES AND BUTADIENE WHICH COMPRISES CONTACTING SAID BUTANE WITH OXYGEN IN THE PRESENCE OF AN OXIDATIVE DEHYDROGENATION CATALYST HAVIN A COMPOSITION OF ABOUT 9WT. PERCENT V2O5, ABOUT 29WT. PERCENT K2SO4, ABOUT 12WT. PERCENT SO2, AND ABOUT 50WT. PERCENT SIO2, WHEREIN THE REACTION IS CARRIED OUT AT TEMPERATURES OF FROM ABOUT 450* TO 650*C AND AT A GHSV OF FROM ABOUT 1000 TO 20,000 HR-1, AND WHEREIN THE RATIO OF OXYGEN TO BUTANE IS IN THE RANGE OF FROM ABOUT 1:1 TO 20:1.
Claim 2
Dependent Claim
95 words
A PROCESS FOR THE OXIDATIVE DEHYDROGENATION OF BUTANE TO FORM A MIXTURE OF BUTENES AND BUTADIENE WHICH COMPRISES CONTACTING SAID BUTANE WITH OXYGEN IN THE PRESENCE OF AN OXIDATIVE DEHYDROGENATION CATALYST HAVIN A COMPOSITION OF ABOUT 9WT. PERCENT V2O5, ABOUT 29WT. PERCENT K2SO4, ABOUT 12WT. PERCENT SO2, AND ABOUT 50WT. PERCENT SIO2, WHEREIN THE REACTION IS CARRIED OUT AT TEMPERATURES OF FROM ABOUT 450* TO 650*C AND AT A GHSV OF FROM ABOUT 1000 TO 20,000 HR-1, AND WHEREIN THE RATIO OF OXYGEN TO BUTANE IS IN THE RANGE OF FROM ABOUT 1:1 TO 20:1.
Claim 3
Dependent Claim
26 words
The process according to claim 1 wherein the catalyst comprises V2O5 , K2SO4and SO2supported on SiO2, wherein said catalyst has a surface area of 40 m2/g.
Claim 4
Dependent Claim
19 words
The process according to claim 1 wherein the oxygen is supplied to the reaction in the form of air.
Claim 5
Dependent Claim
20 words
The process according to claim 1 wherein the mol ratio of oxygen to butane in the feed is about 1:1.
Claim 6
Dependent Claim
21 words
The process according to claim 1 wherein the reaction is carried out at a temperature of from about 500* to 600*C.
Claim 7
Dependent Claim
16 words
The process according to claim 1 wherein the GHSV is from 5000 to 15,000 hr. 1.
Claim 8
Dependent Claim
15 words
The process according to claim 1 wherein the butane is admixed with other C4to C6hydrocarbons.
Claim 9
Dependent Claim
38 words
The process according to claim 1 wherein the butane is present in the feed stream in amounts of from about 1 to 50wt. percent, based on the total weight of the hydrocarbons, oxygen, and inerts in said stream.
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) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |