US4210769A
Expired / Lapsed
US
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Hydrocarbon dehydrogenation with a superactive multimetallic catalytic composite for use therein
Assignee: Honeywell UOP LLC
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Filing: 1979-04-30
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Granted: 1980-07-01
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Expires: 1999-04-30
Abstract
Abstract Dehydrogenatable hydrocarbons are dehydrogenated by contacting them, at hydrocarbon dehydrogenation conditions, with a novel superactive multimetallic catalytic composite comprising a combination of a catalytically effective amount of a pyrolyzed rhenium carbonyl component with a porous carrier material containing a uniform dispersion of a catalytically effective amount of a platinum group component maintained in the elemental metallic state. An example of the superactive nonacidic multimetallic catalytic composite disclosed herein is a combination of a catalytically effective amount of a pyrolyzed rhenium carbonyl component with a porous carrier material containing a uniform dispersion of catalytically effective amounts of an alkali or alkaline earth component and of a platinum group component which is maintained in the elemental metallic state during the incorporation of the rhenium carbonyl component.
Inventors
- 👤 George J. Antos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:09
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; B01J23/64; B01J23/656; B01J23/6567; C07C5/321; C07C5/324; C07C5/325; C07C5/367; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/38; C07C2523/40; C07C2523/42; C07C2523/44; C07C2523/46; C07C2523/54; C07C2523/56; C07C2523/64; C07C2523/656; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
60 words
A method for dehydrogenating a dehydrogenatable hydrocarbon comprising contacting the hydrocarbon, at hydrocarbon dehydrogenation conditions, with a catalytic composite consisting essentially of a combination of a catalytically effective amount of a pyrolyzed rhenium carbonyl component with a porous carrier material containing a uniform dispersion of a catalytically effective amount of a platinum group component maintained in the elemental metallic state.
Claim 2
Independent Claim
60 words
A method for dehydrogenating a dehydrogenatable hydrocarbon comprising contacting the hydrocarbon, at hydrocarbon dehydrogenation conditions, with a catalytic composite consisting essentially of a combination of a catalytically effective amount of a pyrolyzed rhenium carbonyl component with a porous carrier material containing a uniform dispersion of a catalytically effective amount of a platinum group component maintained in the elemental metallic state.
Claim 3
Dependent Claim
21 words
A method as defined in claim 1 wherein the dehydrogenatable hydrocarbon is admixed with hydrogen when it contacts the catalytic composite.
Claim 4
Dependent Claim
14 words
A method as defined in claim 1 wherein the platinum group component is platinum.
Claim 5
Dependent Claim
14 words
A method as defined in claim 1 wherein the platinum group component is iridium.
Claim 6
Dependent Claim
14 words
A method as defined in claim 1 wherein the platinum group component is rhodium.
Claim 7
Dependent Claim
14 words
A method as defined in claim 1 wherein the platinum group component is palladium.
Claim 8
Dependent Claim
40 words
A method as defined in claim 1 wherein the catalytic composite contains the components in amounts, calculated on an elemental basis, corresponding to about 0.01 to about 2 wt.% platinum group metal and about 0.01 to about 5 wt.% rhenium.
Claim 9
Dependent Claim
17 words
A method as defined in claim 1 wherein the porous carrier material is a refractory inorganic oxide.
Claim 10
Dependent Claim
14 words
A method as defined in claim 8 wherein the refractory inorganic oxide is alumina.
Claim 11
Dependent Claim
17 words
A method as defined in claim 1 wherein the catalytic composite is in a substantially halogen-free state.
Claim 12
Dependent Claim
23 words
A method as defined in claim 1 wherein the dehydrogenatable hydrocarbon is an aliphatic hydrocarbon containing 2 to 30 carbon atoms per molecule.
Claim 13
Dependent Claim
24 words
A method as defined in claim 1 wherein the dehydrogenatable hydrocarbon is a normal paraffin hydrocabon containing 3 to 30 carbon atoms per molecule.
Claim 14
Dependent Claim
13 words
A method as defined in claim 12 wherein said normal paraffin is propane.
Claim 15
Dependent Claim
14 words
A method as defined in claim 1 wherein the dehydrogenatable hydrocarbon is a naphthene.
Claim 16
Dependent Claim
26 words
A method as defined in claim 1 wherein the dehydrogenatable hydrocarbon is an alkylaromatic, the alkyl group of which contains about 2 to 6 carbon atoms.
Claim 17
Dependent Claim
49 words
A method as defined in claim 2 wherein the dehydrogenation conditions include a temperature of 700° to about 1200° F., a pressure of 0.1 to 10 atmospheres, a LHSV of 1 to 40 hr. -1 , and a hydrogen to hydrocarbon mole ratio of about 1:1 to about 20:1.
Claim 18
Dependent Claim
26 words
A method as defined in claim 12 wherein the dehydrogenatable hydrocarbon is a normal paraffin hydrocarbon containing about 10 to about 18 carbon atoms per molecule.
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) | 1983-07-01 | 1983-12-31 | 1984-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-01 | 1987-12-31 | 1988-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-01 | 1991-12-31 | 1992-07-01 | $7700.00 | Window Closed / Lapsed |