Patent US2221977A successfully refreshed from Google Patents.
US3700749A
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Dehydrogenation process over platinum on lithiated mordenite
Assignee: Shell USA Inc
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Filing: 1971-06-24
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Granted: 1972-10-24
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Expires: 1991-06-24
Abstract
Abstract Normal alkanes containing from six to 16 carbon atoms are selectively dehydrogenated to mono-alkenes and side reactions are minimized by contacting a hydrocarbon feedstock with a noble metal catalyst supported on a lithiated synthetic mordenite in the presence of hydrogen under appropriate dehydrogenation conditions.
Inventors
- 👤 John K Robinson
- 👤 Hervey H Voge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:23
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/321; C07C5/324; C07C5/325; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/18; B01J29/20; B01J29/22; C07C5/327; C07C5/333; C07C5/3335; C07C5/3337
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
11 words
The process of claim 1 wherein the noble metal is platinum.
Claim 2
Dependent Claim
17 words
The process of claim 1 wherein the platinum is incorporated into the lithiated synthetic mordenite by impregnation.
Claim 3
Dependent Claim
14 words
The process of claim 1 wherein the catalyst composite is calcined at about 550*C.
Claim 4
Dependent Claim
14 words
The process of claim 4 wherein the lithiated support is also calcined at 550*C.
Claim 5
Dependent Claim
13 words
The process of claim 1 herein the C6 16 normal alkane is dodecane.
Claim 6
Dependent Claim
46 words
The process of claim 1 wherein the catalyst consists essentially of from about 0.05-2%w platinum incorporated by impregnation into a lithiated synthetic mordenite support which has been calcined at about 550*C and the composite is then calcined at about 550*C before use in a dehydrogenation process.
Claim 7
Dependent Claim
16 words
The process of claim 1 wherein the C6 16 normal alkanes are admixed with other hydrocarbons.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |