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US3761531A
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Dehydrogenation with a multicomponent catalyst
Assignee: Universal Oil Products Co
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Filing: 1972-06-01
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Granted: 1973-09-25
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Expires: 1992-06-01
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 Group IVA metallic component, a Group VA metallic component and an alkali or alkaline earth metallic component with an alumina carrier material. A specific example of the disclosed method is a method for dehydrogenating a dehydrogenatable hydrocarbon comprising contacting the hydrocarbon at dehydrogenation conditions with a catalyst comprising a combination of catalytically effective amounts of a platinum component, a germanium or tin component, an arsenic component and an alkali or alkaline earth metallic component with an alumina carrier material. Disclosed method is particularly useful for the dehydrogenation of long chain normal paraffins to produce normal mono-olefins of the same carbon number.
Inventors
- 👤 H Bloch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:25
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J23/644; C; C07; C07C; C07C5/00; C07C5/32; C07C5/321; C07C5/324; C07C5/325; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/02; C07C2523/04; C07C2523/14; C07C2523/16; C07C2523/18; C07C2523/38; C07C2523/40; C07C2523/42; C07C2523/44; C07C2523/54; C07C2523/56; C07C2523/64; C07C2523/644
Claims Analysis
Total Claims: 27
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
23 words
A method as defined in claim 1 wherein the Group IVA metallic component of the composite is germanium or a Compound of germanium.
Claim 4
Dependent Claim
23 words
A method as defined in claim 1 wherein the Group IVA metallic component of the composite is tin or a compound of tin.
Claim 5
Dependent Claim
23 words
A method as defined in claim 1 wherein the Group IVA metallic component of the composite is lead or a compound of lead.
Claim 6
Dependent Claim
23 words
A method as defined in claim 1 wherein the Group VA metallic component of the composite is arsenic or a compound of arsenic.
Claim 7
Dependent Claim
23 words
A method as defined in claim 1 wherein the Group VA metallic component of the composite is antimony or a compound of antimony.
Claim 8
Dependent Claim
23 words
A method as defined in claim 1 wherein the Group VA metallic component of the composite is bismuth or a compound of bismuth.
Claim 9
Dependent Claim
23 words
A method as defined in claim 1 wherein the alkali or alkaline earth metallic component of the composite is a compound of lithium.
Claim 10
Dependent Claim
23 words
A method as defined in claim 1 wherein the alkali or alkaline earth metallic component of the composite is a compound of potassium.
Claim 11
Dependent Claim
20 words
A method as defined in claim 1 wherein the alkali or alkaline earth metallic component is a compound of sodium.
Claim 12
Dependent Claim
28 words
A method as defined in claim 1 wherein the alumina carrier material has an apparent bulk density selected from the range of about 0.3 to about 0.4 g/cc.
Claim 13
Dependent Claim
14 words
A method as defined in claim 1 wherein the alumina carrier material is gamma-alumina.
Claim 14
Dependent Claim
95 words
A method as defined in claim 1 wherein the composite contains, on an elemental basis, about 0.01 to about 2 wt. % of the platinum group metal, about 0.25 to about 2.5 of the alkali metal or alkaline earth metal, and sufficient amounts of the Group IVA metal and of the Group VA metal to result in an atomic ratio of Group IVA metal to platinum group metal of about 0.1:1 to about 6:1 and in an atomic ratio of the Group VA metal to the platinum group metal of about 0.1 to about 0.8:1.
Claim 15
Dependent Claim
43 words
A method as defined in claim 1 wherein the catalytic composite comprises a combination of catalytically effective amounts of a platinum component, a germanium or tin component, an arsenic component and an alkali or alkaline earth metallic component with an alumina carrier material.
Claim 16
Dependent Claim
77 words
A method as defined in claim 16 wherein the composite contains, on an elemental basis, about 0.01 to about 2 wt. percent platinum, about 0.25 to about 2.5 wt. percent alkali or alkaline earth metal and sufficient amounts of arsenic and germanium or tin to result in an atomic ratio of arsenic to platinum of about 0.1:1 to about 0.8:1 and in an atomic ratio of germanium or tin to platinum of about 0.1:1 to about 6:1.
Claim 17
Dependent Claim
77 words
A method as defined in claim 16 wherein the composite contains, on an elemental basis, about 0.1 to about 0.8 wt. percent platinum, about 0.5 to about 1.5 wt. percent alkali or alkaline earth metal and sufficient amounts of germanium or tin and arsenic to result in an atomic ratio of germanium or tin to platinum of about 0.5:1 to about 4:1 and in an atomic ratio of arsenic to platinum of about 0.1:1 to about 0.5:1.
Claim 18
Dependent Claim
28 words
A method as defined in claim 16 wherein the alumina carrier material has an apparent bulk density selected from the range of about 0.3 to about 0.4 g/cc.
Claim 19
Dependent Claim
23 words
A method as defined in claim 16 wherein the alkali or alkaline earth metallic component of the composite is a compound of lithium.
Claim 20
Dependent Claim
23 words
A method as defined in claim 16 wherein the alkali or alkaline earth metallic component of the composite is a compound of potassium.
Claim 21
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 22
Dependent Claim
23 words
A method as defined in claim 1 wherein the dehydrogenatable hydrocarbon is an aliphatic compound containing two to 30 carbon atoms per molecule.
Claim 23
Dependent Claim
25 words
A method as defined in claim 1 wherein the dehydrogenatable hydrocarbon is a normal paraffin hydrocarbon containing about four to 30 carbon atoms pEr molecule.
Claim 24
Dependent Claim
26 words
A method as defined in claim 1 wherein the dehydrogenatable hydrocarbon is a normal paraffin hydrocarbon containing about 10 to about 18 carbon atoms per molecule.
Claim 25
Dependent Claim
25 words
A method as defined in claim 1 wherein the dehydrogenatable hydrocarbon is an alkylaromatic, the alkyl group of which contains two to six carbon atoms.
Claim 26
Dependent Claim
13 words
A method as defined in claim 1 wherein dehydrogenatable hydrocarbon is a naphthene.
Claim 27
Dependent Claim
55 words
A method as defined in claim 22 wherein the 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 200 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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |