US4716143A
Expired / Lapsed
US
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Dehydrogenation catalyst composition
Assignee: Honeywell UOP LLC
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Filing: 1987-02-25
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Granted: 1987-12-29
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Expires: 2007-02-25
Abstract
Abstract A novel catalytic composite comprising a platinum group metal component; a modifier metal component selected from the group consisting of a tin component, germanium component, rhenium component and mixtures thereof; an alkali or alkaline earth metal component or mixtures thereof, an optional halogen component, and an optional catalytic modifier component on a refractory oxide support having a nominal diameter of at least about 850 microns. The distribution of the platinum group metal component is such that the platinum group component is surface-impregnated where substantially all of the platinum group metal component is located at most within a 400 micron exterior layer of the support. The effective amount of the modifier metal component may be uniformly impregnated throughout the refractory oxide support, surface-impregnated, or located in any other appropriate fashion. The distribution of the surface-impregnated modifier metal component is such that the modifier metal component is substantially all located at most within a 400 micron exterior layer of the support. The novel catalyst has particular utility as a hydrocarbon dehydrogenation catalyst. A method of preparing the catalyst is also disclosed.
Inventors
- 👤 Tamotsu Imai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:53
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/62; B01J23/622; B01J23/64; B01J23/656; B01J23/6567; B01J35/00; B01J35/19; C; C10; C10G; C10G45/00; Y; Y10; Y10S; Y10S502/00; Y10S502/514; Y10S502/523
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
109 words
A catalytic composite comprising a platinum group metal component, a modifier metal component selected from the group consisting of a tin component, germanium component, rhenium component, and mixtures thereof on a refractory oxide support having a nominal diameter of at least about 850 microns wherein the platinum group component and the modified metal component are surface-impregnated such that the average concentration of the surface-impregnated platinum group component and modifier metal component on the outside 100 micron layer of the catalyst particle are each at least 2 times the concentration of the respective platinum group component and modifier metal component in the 200 micron diameter center core of the catalyst.
Claim 2
Dependent Claim
109 words
A catalytic composite comprising a platinum group metal component, a modifier metal component selected from the group consisting of a tin component, germanium component, rhenium component, and mixtures thereof on a refractory oxide support having a nominal diameter of at least about 850 microns wherein the platinum group component and the modified metal component are surface-impregnated such that the average concentration of the surface-impregnated platinum group component and modifier metal component on the outside 100 micron layer of the catalyst particle are each at least 2 times the concentration of the respective platinum group component and modifier metal component in the 200 micron diameter center core of the catalyst.
Claim 3
Dependent Claim
19 words
The catalytic composite of claim 1 further characterized in that the platinum group metal component comprises a platinum component.
Claim 4
Dependent Claim
18 words
The catalytic composite of claim 1 further characterized in that the modifier metal component comprises a tin component.
Claim 5
Dependent Claim
19 words
The catalytic composite of claim 1 further characterized in that the alkali earth metal component comprises a lithium component.
Claim 6
Dependent Claim
16 words
The catalytic composite of claim 1 further characterized in that the refractory oxide support comprises alumina.
Claim 7
Dependent Claim
16 words
The catalytic composite of claim 1 further characterized in that it comprises an optional halogen component.
Claim 8
Dependent Claim
18 words
The catalytic composite of claim 1 further characterized in that the optional halogen component comprises a chlorine component.
Claim 9
Dependent Claim
17 words
The catalytic composite of claim 1 further characterized in that it comprises an optional catalyst modifier component.
Claim 10
Dependent Claim
30 words
The catalytic composite of claim 8 further characterized in that the optional catalyst modifier component is selected from the group consisting of a thallium component, gallium component, and indium component.
Claim 11
Dependent Claim
106 words
A catalytic composite comprising from about 0.01 to about 2.0 wt. % of a platinum component, from about 0.01 to about 5.0 wt. % of a tin component, and from about 0.01 to about 1.0 wt. % of a lithium component on an alumina having a nominal diameter of at least about 850 microns wherein the platinum and tin components are surface-impregnated such that the concentration of the surface-impregnated platinum and tin components on the outside 100 micron catalyst layer are each of at least 2 times the concentration of the respective platinum and tin components in the 200 micron diameter center core of the catalyst.
Claim 12
Dependent Claim
106 words
A catalytic composite comprising from about 0.01 to about 2.0 wt. % of a platinum component, from about 0.01 to about 5.0 wt. % of a tin component, and from about 0.01 to about 1.0 wt. % of a lithium component on an alumina having a nominal diameter of at least about 850 microns wherein the platinum and tin components are surface-impregnated such that the concentration of the surface-impregnated platinum and tin components on the outside 100 micron catalyst layer are each of at least 2 times the concentration of the respective platinum and tin components in the 200 micron diameter center core of the catalyst.
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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) | 1990-12-28 | 1991-06-29 | 1991-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-28 | 1995-06-29 | 1995-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-28 | 1999-06-29 | 1999-12-29 | $7700.00 | Window Closed / Lapsed |