US4136127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydrogenation method and multimetallic catalytic composite for use therein
Assignee: Honeywell UOP LLC
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Filing: 1977-08-25
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Granted: 1979-01-23
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Expires: 1997-08-25
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 germanium 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 germanium 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 0.1 to about 5 wt. % cobalt, about 0.001 to about 1 wt. % germanium and about 0.1 to about 5 wt. % alkali metal or alkaline earth metal.
Inventors
- 👤 George J. Antos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:30
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/085; C10G35/09; B; B01; B01J; B01J23/00; B01J23/70; B01J23/89; B01J23/8933; B01J23/8986; C07; C07C; C07C5/00; C07C5/32; C07C5/321; C07C5/324; C07C5/325; C07C5/327; C07C5/333; C07C5/3335; C07C5/3337; C07C5/367; C07C5/373; C07C5/393; C07C5/41; C07C5/415; C07C5/417; C07C2523/00; C07C2523/02; C07C2523/04; C07C2523/14; C07C2523/16; C07C2523/32; C07C2523/36; C07C2523/38; C07C2523/40; C07C2523/42; C07C2523/70; C07C2523/74; C07C2523/75; C07C2523/89; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
155 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 0.1 to about 5 wt. % cobalt, and about 0.001 to about 1 wt. % germanium; wherein the platinum group metal, rhenium, catalytically available cobalt and germanium are uniformly dispersed throughout the porous carrier material; wherein substantially all of the platinum group metal is present in the elemental metallic state; wherein substantially all of the germanium 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
155 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 0.1 to about 5 wt. % cobalt, and about 0.001 to about 1 wt. % germanium; wherein the platinum group metal, rhenium, catalytically available cobalt and germanium are uniformly dispersed throughout the porous carrier material; wherein substantially all of the platinum group metal is present in the elemental metallic state; wherein substantially all of the germanium 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
23 words
A method as defined in claim 1 wherein the dehydrogenatable hydrocarbon is an aliphatic compound containing 2 to 30 carbon atoms per molecule.
Claim 12
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 13
Dependent Claim
14 words
A method as defined in claim 1 wherein the dehydrogenatable hydrocarbon is a naphthene.
Claim 14
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 15
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 atomspheres, an LHSV of 1 to 40 hr. -1 , and a hydrogen to hydrocarbon mole ratio of about 1:1 to about 20:1.
Claim 16
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 0.25 to about 2.5 wt. % cobalt and about 0.01 to about 0.5 wt. % germanium.
Claim 17
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 germanium to platinum group metal is about 0.01:1 to about 4:1, 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 0.2:1 to about 66:1.
Claim 18
Dependent Claim
22 words
A method as defined in claim 1 wherein substantially all of the germanium is present in the catalytic composite as germanium oxide.
Claim 19
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 linedout at dehydrogenation conditions.
References Cited (Backward Citations)
US4036742A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-22 | 1982-07-24 | 1983-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-22 | 1986-07-24 | 1987-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-22 | 1990-07-24 | 1991-01-23 | $7700.00 | Window Closed / Lapsed |