US4482646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidative dehydrogenation of paraffins
Assignee: Phillips Petroleum Co
•
Filing: 1984-03-05
•
Granted: 1984-11-13
•
Expires: 2004-03-05
Abstract
Abstract An oxidative dehydrogenation process for a paraffin or mixture of paraffins having from 2 to 5 carbon atoms employing a catalyst composition comprising lithium and titanium. The selectivity of the catalyst composition may be improved by adding manganese to the catalyst composition.
Inventors
- 👤 Alan D. Eastman
- 👤 James B. Kimble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:30
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/42; C07C5/48; B; B01; B01J; B01J23/00; B01J23/02; B01J23/04; B01J23/16; B01J23/32; B01J23/34
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
19 words
A catalyst composition comprising lithium and titanium, wherein the atomic ratio of lithium to titanium is above about 1.8:1.
Claim 2
Dependent Claim
19 words
A catalyst composition comprising lithium and titanium, wherein the atomic ratio of lithium to titanium is above about 1.8:1.
Claim 3
Dependent Claim
30 words
A catalyst composition in accordance with claim 1 wherein the atomic ratio of lithium to titanium in said catalyst composition is in the range of about 2:1 to about 3:1.
Claim 4
Dependent Claim
11 words
A catalyst composition in accordance with claim 1 additionally comprising manganese.
Claim 5
Dependent Claim
68 words
A catalyst composition in accordance with claim 3 wherein the atomic ratio of lithium to titanium in said catalyst composition is in the range of about 2:1 to about 3:1 and wherein the concentration of said manganese in said catalyst composition is in the range of about 1 weight percent to about 10 weight percent calculated as the element and based on the weight of said catalyst composition.
References Cited (Backward Citations)
US2795574A
Cited
US3210436A
Cited
US3308196A
Cited
US3308191A
Cited
US3308200A
Cited
US3565829A
Cited
US3686347A
Cited
US3784485A
Cited
US4176140A
Cited
JPS54109904A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-11-13 | 1988-05-14 | 1988-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-13 | 1992-05-14 | 1992-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-13 | 1996-05-14 | 1996-11-13 | $7700.00 | Window Closed / Lapsed |