US3723557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydrogenation with a catalytic composite containing platinum, rhenium, germanium and an alkali or alkaline earth metal
Assignee: Universal Oil Products Co
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Filing: 1972-01-13
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Granted: 1973-03-27
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Expires: 1992-01-13
Abstract
Abstract Dehydrogenatable hydrocarbons are dehydrogenated by contacting them at dehydrogenation conditions with a catalytic composite comprising a combination of catalytically effective amounts of a platinum group component, a rhenium component, a germanium component and an alkali or alkaline earth metal with a porous carrier material. A specific example of the catalytic composite disclosed herein is a combination of a platinum component, a rhenium component, a germanium component and an alkali or alkaline earth component with an alumina carrier material, wherein the components are present in amounts sufficient to result in the composite containing, on an elemental basis, 0.01 to 2 wt. % platinum, 0.01 to 2 wt. % rhenium, 0.01 to 5 wt. % germanium and 0.1 to 5 wt. % of alkali or alkaline earth metal.
Inventors
- 👤 J Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:08
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/321; C07C5/324; C07C5/325; B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J23/656; B01J23/6567; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/02; C07C2523/04; C07C2523/14; C07C2523/16; C07C2523/32; C07C2523/36; C07C2523/38; C07C2523/40; C07C2523/42; C07C2523/44; C07C2523/54; C07C2523/56; C07C2523/64; C07C2523/656
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
22 words
A method as defined in claim 1 wherein the platinum group component of the composite is platinum or a compound of platinum.
Claim 2
Dependent Claim
22 words
A method as defined in claim 1 wherein the platinum group component of the composite is palladium or a compound of palladium.
Claim 3
Dependent Claim
17 words
A method as defined in claim 1 wherein the porous carrier material is a refractory inorganic oxide.
Claim 4
Dependent Claim
14 words
A method as defined in claim 4 wherein the refractory inorganic oxide is alumina.
Claim 5
Dependent Claim
22 words
A method as defined in claim 1 wherein the alkali or alkaline earth component of the composite is a compound of lithium.
Claim 6
Dependent Claim
22 words
A method as defined in claim 1 wherein the alkali or alkaline earth component of the composite is a compound of potassium.
Claim 7
Dependent Claim
73 words
A method as defined in claim 1 wherein the atomic ratio of rhenium to platinum group metal contained in the composite is about 0.1:1 to about 3:1, wherein the atomic ratio of germanium to platinum group metal contained in the component is about 0.25: 1 to about 6:1 and wherein the atomic ratio of alkali or alkaline earth metal to platinum group metal contained in the composite is about 5:1 to about 50:1.
Claim 8
Independent Claim
113 words
A method for dehydrogenating a dehydrogenatable hydrocarbon comprising contacting the hydrocarbon, at dehydrogenating conditions, with a catalytic composite comprising a combination of a platinum component, a rhenium component, a germanium component and an alkali or alkaline earth component with an alumina carrier material in amounts sufficient to result in a composite containing, on an elemental basis, abOut 0.01 to about 2 wt. % of the platinum metal, about 0.01 to about 2 wt. % rhenium, about 0.01 to about 5 wt. % germanium, and about 0.1 to about 5 wt. % of the alkali or alkaline earth metal, said germanium component being present in an oxidation state above that of the elemental metal.
Claim 9
Dependent Claim
54 words
A method as defined in claim 9 wherein the composite contains, on an elemental basis, about 0.05 to about 1 wt. % platinum, about 0.05 to about 1 wt. % rhenium, about 0.05 to about 2 wt. % germanium, and about 0.25 to about 3.5 wt. % of the alkali or alkaline earth metal.
Claim 10
Dependent Claim
22 words
A method as defined in claim 9 wherein the alkali or alkaline earth component of the composite is a compound of lithium.
Claim 11
Dependent Claim
23 words
A method as defined in claim 9 wherein the alkali or alkaline earth metal component of the composite is a compound of potassium.
Claim 12
Dependent Claim
65 words
A method as defined in claim 9 wherein the atomic ratio of rhenium to platinum contained in the composite is about 0.1:1 to about 3:1, wherein the atomic rate of germanium to platinum contained in the composite is 0.25:1 to about 6:1, and wherein the atomic ratio of alkali or alkaline earth metal to platinum contained in the composite is about 5:1 to about 50:1.
Claim 13
Dependent Claim
21 words
A method as defined in claim 1 wherein said dehydrogenatable hydrocarbon is admixed with hydrogen when it contacts the catalytic composite.
Claim 14
Dependent Claim
23 words
A method as defined in claim 1 wherein said dehydrogenatable hydrocarbon is an aliphatic compound containing two to 30 carbon atoms per molecule.
Claim 15
Dependent Claim
25 words
A method as defined in claim 1 wherein said dehydrogenatable hydrocarbon is a normal paraffin hydrocarbon containing about four to 30 carbon atoms per molecule.
Claim 16
Dependent Claim
26 words
A method as defined in claim 1 wherein said dehydrogenatable hydrocarbon is a normal paraffin hydrocarbon containing about 10 to about 15 carbon atoms per molecule.
Claim 17
Dependent Claim
25 words
A method as defined in claim 1 wherein said dehydrogenatable hydrocarbon is an alkylaromatic, the alkyl group of which contains two to six carbon atoms.
Claim 18
Dependent Claim
14 words
A method as defined in claim 1 wherein said dehydrogenatable hydrocarbon is a naphthene.
Claim 19
Dependent Claim
56 words
A method as defined in claim 1 wherein said dehydrogenation conditions include a temperature of about 700* to about 1,200* F., a pressure of about 0.1 to about 10 atmospheres, a liquid hourly space velocity of about 1 to about 40 hr. 1 and a hydrogen to hydrocarbon mole ratio of about 1:1 to about 20:1.
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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |