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US4085154A
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Hydrocarbon dehydrogenation using a nonacidic catalyst of a platinum group metal, rhenium, cobalt, tin, and an alkali or alkaline earth metal on a porous carrier
Assignee: Honeywell UOP LLC
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Filing: 1977-02-22
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Granted: 1978-04-18
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Expires: 1997-02-22
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 cobalt component, and a tin component with a porous carrier material. A specific example of the nonacidic catalytic composite disclosed herein is a combination of a platinum group component, a rhenium component, a cobalt component, a tin component, and an alkali or alkaline earth component with a porous carrier material in amounts sufficient to result in a composite containing about 0.01 to about 2 wt. % platinum group metal, about 0.01 to about 2 wt. % rhenium, about 0.05 to about 5 wt. % cobalt, about 0.01 to about 5 wt. % tin and about 0.1 to about 5 wt. % alkali metal or alkaline earth metal.
Inventors
- 👤 George J. Antos
- 👤 John C. Hayes
- 👤 Ernest L. Pollitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:51
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/89; B01J23/8933; B01J23/8986; C; C07; C07C; C07C5/00; C07C5/32; C07C5/321; C07C5/324; C07C5/325; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/085; C10G35/09
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
175 words
A method for dehydrogenating a dehydrogenatable hydrocarbon comprising contacting the hydrocarbon, at dehydrogenation conditions, with a catalytic composite comprising a porous carrier material containing, on an elemental basis, about 0.01 to about 2 wt. % platinum group metal, about 0.01 to about 2 wt. % rhenium, about 0.05 to about 5 wt. % cobalt, and about 0.01 to about 5 wt. % tin; wherein the platinum group metal, rhenium, catalytically available cobalt and tin are uniformly dispersed throughout the porous carrier material; wherein the average crystallite size of the tin and catalytically available cobalt is less than 100 Angstroms in maximum dimension; wherein substantially all of the platinum group metal is present in the elemental metallic state; wherein substantially all of the tin is present in an oxidation state above that of the elemental metal; and wherein substantially all of the rhenium and catalytically available cobalt are present in the elemental metallic state or in a state which is reducible to the elemental metallic state under dehydrogenation conditions or in a mixture of these states.
Claim 2
Independent Claim
175 words
A method for dehydrogenating a dehydrogenatable hydrocarbon comprising contacting the hydrocarbon, at dehydrogenation conditions, with a catalytic composite comprising a porous carrier material containing, on an elemental basis, about 0.01 to about 2 wt. % platinum group metal, about 0.01 to about 2 wt. % rhenium, about 0.05 to about 5 wt. % cobalt, and about 0.01 to about 5 wt. % tin; wherein the platinum group metal, rhenium, catalytically available cobalt and tin are uniformly dispersed throughout the porous carrier material; wherein the average crystallite size of the tin and catalytically available cobalt is less than 100 Angstroms in maximum dimension; wherein substantially all of the platinum group metal is present in the elemental metallic state; wherein substantially all of the tin is present in an oxidation state above that of the elemental metal; and wherein substantially all of the rhenium and catalytically available cobalt are present in the elemental metallic state or in a state which is reducible to the elemental metallic state under dehydrogenation conditions or in a mixture of these states.
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 metal is platinum.
Claim 5
Dependent Claim
14 words
A method as defined in claim 1 wherein the platinum group metal is iridium.
Claim 6
Dependent Claim
14 words
A method as defined in claim 1 wherein the platinum group metal is rhodium.
Claim 7
Dependent Claim
14 words
A method as defined in claim 1 wherein the platinum group metal is palladium.
Claim 8
Dependent Claim
13 words
A method as defined in claim 1 wherein the catalytic composite is sulfur-free.
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
24 words
A method as defined in claim 1 wherein the dehydrogenatable hydrocarbon is a normal paraffin hydrocarbon containing 4 to 30 carbon atoms per molecule.
Claim 12
Dependent Claim
14 words
A method as defined in claim 1 wherein the dehydrogentable hydrocarbon is a naphthene.
Claim 13
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 14
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, an LHSV of 1 to 40 hr. -1 , and a hydrogen to hydrocarbon mole ratio of about 1:1 to about 20:1.
Claim 15
Dependent Claim
50 words
A method as defined in claim 1 wherein the composite contains, on an elemental basis, about 0.05 to about 1 wt. % platinum group metal, about 0.05 to about 1 wt. % rhenium, about 0.1 to about 2.5 wt. % cobalt and about 0.05 to about 1 wt. % tin.
Claim 16
Dependent Claim
65 words
A method as defined in claim 1 wherein the metals content of the catalytic composite is adjusted so that the atomic ratio of tin to platinum group metal is about 0.1:1 to about 13:1, the atomic ratio of rhenium to platinum group metal is about 0.05:1 to about 10:1, and the atomic ratio of cobalt to platinum group metal is about 0.1:1 to about 66:1.
Claim 17
Dependent Claim
22 words
A method as defined in claim 1 wherein substantially all of the tin is present in the catalytic composite as tin oxide.
Claim 18
Dependent Claim
36 words
A method as defined in claim 2 wherein substantially all of the catalytically available cobalt contained in the composite is present in the elemental metallic state after the method is started-up and lined-out at dehydrogenation conditions.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-17 | 1981-10-17 | 1982-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-17 | 1985-10-17 | 1986-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-17 | 1989-10-17 | 1990-04-18 | $7700.00 | Window Closed / Lapsed |