US4133839A
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US
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Dehydrogenation with a nonacidic multimetallic catalyst
Assignee: Honeywell UOP LLC
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Filing: 1977-09-26
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Granted: 1979-01-09
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Expires: 1997-09-26
Abstract
Abstract Dehydrogenatable hydrocarbons are dehydrogenated by contacting them at dehydrogenation conditions with a nonacidic catalytic composite comprising a combination of catalytically effective amounts of a platinum or palladium component, a ruthenium component, a Group IVA metallic component and an alkali metal or alkaline earth metal component with a porous carrier material. A specific example of the nonacidic multimetallic catalytic composite disclosed herein is a combination of a platinum component, a ruthenium component, a germanium component and an alkali metal or alkaline earth metal component with an alumina carrier material. The amounts of the catalytically active components contained in this last composite are, on an elemental basis, 0.01 to 2 wt. % platinum, 0.01 to 2 wt. % ruthenium, 0.01 to 5 wt. % germanium and 0.1 to 5 wt. % of the alkali or alkaline earth metal.
Inventors
- 👤 John C. Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:07
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/327; C07C5/333; C07C5/3335; C07C5/3337; B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/62; B01J23/622; C07C5/321; C07C5/324; C07C5/325; C07C5/367; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/02; C07C2523/04; C07C2523/38; C07C2523/40; C07C2523/42; C07C2523/44; C07C2523/46; C07C2523/54; C07C2523/56; C07C2523/62; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
143 words
A method for dehydrogenating a dehydrogenatable hydrocarbon comprising contacting the hydrocarbon, at dehydrogenation conditions, with a nonacidic catalytic composite consisting essentially of a porous carrier material containing, on an elemental basis, about 0.01 to about 2 wt. % platinum or palladium, about 0.01 to 2 wt. % ruthenium, about 0.01 to about 5 wt. % Group IVA metal and about 0.1 to about 5 wt. % of an alkali metal or alkaline earth metal; wherein the platinum or palladium, ruthenium, Group IVA metal and alkali metal or alkaline earth metal are uniformly dispersed throughout the porous carrier material; wherein substantially all of the platinum or palladium and ruthenium are present in the elemental metallic state; and wherein substantially all of the Group IVA metal and alkali metal or alkaline earth metal are present in an oxidation state above that of the elemental metal.
Claim 2
Independent Claim
143 words
A method for dehydrogenating a dehydrogenatable hydrocarbon comprising contacting the hydrocarbon, at dehydrogenation conditions, with a nonacidic catalytic composite consisting essentially of a porous carrier material containing, on an elemental basis, about 0.01 to about 2 wt. % platinum or palladium, about 0.01 to 2 wt. % ruthenium, about 0.01 to about 5 wt. % Group IVA metal and about 0.1 to about 5 wt. % of an alkali metal or alkaline earth metal; wherein the platinum or palladium, ruthenium, Group IVA metal and alkali metal or alkaline earth metal are uniformly dispersed throughout the porous carrier material; wherein substantially all of the platinum or palladium and ruthenium are present in the elemental metallic state; and wherein substantially all of the Group IVA metal and alkali metal or alkaline earth metal are present in an oxidation state above that of the elemental metal.
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 2 wherein the refractory inorganic oxide is alumina.
Claim 5
Dependent Claim
17 words
A method as defined in claim 1 wherein the alkali metal or alkaline earth metal is lithium.
Claim 6
Dependent Claim
17 words
A method as defined in claim 1 wherein the alkali metal or alkaline earth metal is potassium.
Claim 7
Dependent Claim
14 words
A method as defined in claim 1 wherein the Group IVA metal is germanium.
Claim 8
Dependent Claim
14 words
A method as defined in claim 1 wherein the Group IVA metal is tin.
Claim 9
Dependent Claim
14 words
A method as defined in claim 1 wherein the Group IVA metal is lead.
Claim 10
Dependent Claim
62 words
A method as defined in claim 1 wherein the atomic ratio of Group IVA metal to platinum or palladium is about 0.05:1 to about 10:1, wherein the atomic ratio of ruthenium to platinum or palladium is about 0.1:1 to about 10:1 and wherein the atomic ratio of the alkali metal or alkaline metal to platinum group metal is about 5:1 to 50:1.
Claim 11
Dependent Claim
18 words
A method as defined in claim 6 wherein substantially all of the germanium is present as germanium oxide.
Claim 12
Dependent Claim
18 words
A method as defined in claim 7 wherein substantially all of the tin is present as tin oxide.
Claim 13
Dependent Claim
18 words
A method as defined in claim 8 wherein substantially all of the lead is present as lead oxide.
Claim 14
Dependent Claim
65 words
A method as defined in claim 1 wherein the composite contains, on an elemental basis, about 0.05 to about 1 wt. % platinum or palladium, about 0.05 to about 1 wt. % ruthenium, about 0.05 to about 2 wt. % Group IVA metal and about 0.25 to about 3.5 wt. % alkali metal or alkaline earth metal and wherein the porous carrier material is alumina.
Claim 15
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 16
Dependent Claim
23 words
A method as defined in claim 1 wherein said dehydrogenatable hydrocarbon is an aliphatic hydrocarbon containing 2 to 30 carbon atoms per molecule.
Claim 17
Dependent Claim
25 words
A method as defined in claim 1 wherein said dehydrogenatable hydrocarbon is a normal paraffin hydrocarbon containing about 4 to 30 carbon atoms per molecule.
Claim 18
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 18 carbon atoms per molecule.
Claim 19
Dependent Claim
25 words
A method as defined in claim 1 wherein said dehydrogenatable hydrocarbon is an alkylaromatic, the alkyl group of which contains 2 to 6 carbon atoms.
Claim 20
Dependent Claim
14 words
A method as defined in claim 1 wherein said dehydrogenatable hydrocarbon is a naphthene.
Claim 21
Dependent Claim
55 words
A method as defined in claim 1 wherein said dehydrogenation conditions include a temperature of about 700 to about 1200° F., a pressure of about 0.1 to about 10 atmospheres, a liquid hourly space velocity of about 1 to 40 hr. -1 and a hydrogen to hydrocarbon mole ratio of about 1:1 to about 20:1.
Claim 22
Dependent Claim
37 words
A method as defined in claim 1 wherein the contacting is performed in the presence of water or a water-producing substance in an amount corresponding to about 50 to about 10,000 wt. ppm. based on hydrocarbon charged.
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) | 1982-01-08 | 1982-07-10 | 1983-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-08 | 1986-07-10 | 1987-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-08 | 1990-07-10 | 1991-01-09 | $7700.00 | Window Closed / Lapsed |