Patent US4865719A successfully refreshed from Google Patents.
US4865719A
Expired / Lapsed
US
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Trimetallic reforming catalyst
Assignee: Honeywell UOP LLC
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Filing: 1988-10-31
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Granted: 1989-09-12
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Expires: 2008-10-31
Abstract
Abstract An improved reforming process utilizing a novel trimetallic catalytic composite is disclosed. The composite comprises a refractory support having a nominal diameter of at least 650 microns and having deposited thereon a uniformly dispersed platinum component, a uniformly dispersed Group IVA metal component and a surface-impregnated metal component selected from the group consisting of rhdoium, ruthenium, cobalt, nickel, or iridium. When this catalytic composite is used in the reforming of hydrocarbons at low pressures, significant improvements in activity and stability are observed compared to catalysts of the prior art.
Inventors
- 👤 Mark D. Moser
- 👤 R. Joe Lawson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:06
CPC Classifications
B; B01; B01J; B01J35/00; B01J35/30; B01J35/396; B01J35/397; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/62; B01J23/622; B01J23/624; B01J23/626; B01J23/628; B01J23/70; B01J23/89; B01J23/8933; B01J23/8966; B01J35/19; B01J35/399; B01J37/00; B01J37/16; B01J37/18; C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/085; C10G35/09
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
69 words
A process for the catalytic reforming of naphtha charge stock comprising contacting the naphtha and hydrogen at reforming conditions with a catalytic composite comprising a uniformly dispersed platinum component, a uniformly dispersed Group IVA metal component, a surface-impregnated metal component selected from the group consisting of rhodium, ruthenium, cobalt, nickel, or iridium, and a halogen component on a refractory support having a nominal diameter of at least 650 microns.
Claim 2
Dependent Claim
69 words
A process for the catalytic reforming of naphtha charge stock comprising contacting the naphtha and hydrogen at reforming conditions with a catalytic composite comprising a uniformly dispersed platinum component, a uniformly dispersed Group IVA metal component, a surface-impregnated metal component selected from the group consisting of rhodium, ruthenium, cobalt, nickel, or iridium, and a halogen component on a refractory support having a nominal diameter of at least 650 microns.
Claim 3
Dependent Claim
16 words
The process of claim 1 further characterized in that the halogen component comprises a chlorine component.
Claim 4
Dependent Claim
67 words
The process of claim 1 further characterized in that the reforming conditions include a pressure of from about 345 to about 862 kPa (ga), a reaction temperature in the range of from about 427 to about 593° C., a liquid hourly space velocity of about 0.1 to about 10 hr-1, and about 1 to about 20 moles of hydrogen per mole of hydrocarbon entering the reforming zone.
Claim 5
Dependent Claim
68 words
The process of claim 1 further characterized in that the catalytic composite comprises, on an elemental basis, from about 0.05 to about 1 wt. % platinum, from about 0.05 to about 1 wt. % surface-impregnated metal, from about 0.1 to about 2 wt. % Group IVA metal, and from about 0.5 to about 1.5 wt. % chlorine on a support having a nominal diameter of about 1500 microns.
Claim 6
Dependent Claim
15 words
The process of claim 4 further characterized in that the Group IVA metal comprises germanium.
Claim 7
Dependent Claim
15 words
The process of claim 4 further characterized in that the Group IVA metal comprises lead.
Claim 8
Dependent Claim
15 words
The process of claim 4 further characterized in that the Group IVA metal comprises tin.
References Cited (Backward Citations)
US4197416A
Cited
US4072731A
Cited
US4179359A
Cited
US4083883A
Cited
US4167495A
Cited
US4107083A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-11 | 1993-03-13 | 1993-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-11 | 1997-03-13 | 1997-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-11 | 2001-03-13 | 2001-09-12 | $7700.00 | Window Closed / Lapsed |