US5254518A
Expired / Lapsed
US
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Group IVB oxide addition to noble metal on rare earth modified silica alumina as hydrocarbon conversion catalyst
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1992-07-22
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Granted: 1993-10-19
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Expires: 2012-07-22
Abstract
Abstract By this invention there is provided a catalyst composition comprising a Group IVB oxide, an amorphous silica-alumina support having dispersed thereon a rare earth oxide, which as herein used also includes yttrium oxide, and a metal(s) selected from the group consisting of Group VIII noble metal(s), mixtures of Group VIII noble metal(s) and tin, mixtures of Group VIII noble metal(s) and rhenium, and mixtures of Group VIII noble metal(s), tin and rhenium. The amorphous silica-alumina support contains at least about 50% silica by weight. The catalyst can function as a hydrocarbon conversion catalyst in reactions where platinum on halided (Cl,F)-alumina is typically used.
Inventors
- 👤 Stuart L. Soled
- 👤 Gary B. McVicker
- 👤 William E. Gates
- 👤 Sabato Miseo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:58
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/10; B01J23/38; B01J23/54; B01J23/56; B01J23/62; B01J23/622; B01J23/626; B01J23/63; B01J23/64; B01J23/656; B01J23/6567; C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/085; C10G35/09
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
65 words
A catalyst composition comprising metal(s) selected from the group consisting of Group VIII noble metal(s), mixtures of Group VIII noble metal(s) and rhenium, mixtures of Group VIII noble metal(s) and tin, and mixtures of Group VIII noble metal(s), tin and rhenium, a Group IVB oxide, and an amorphous silica-alumina support having at least about 50 wt % silica, having dispersed thereon a rare earth oxide.
Claim 2
Dependent Claim
65 words
A catalyst composition comprising metal(s) selected from the group consisting of Group VIII noble metal(s), mixtures of Group VIII noble metal(s) and rhenium, mixtures of Group VIII noble metal(s) and tin, and mixtures of Group VIII noble metal(s), tin and rhenium, a Group IVB oxide, and an amorphous silica-alumina support having at least about 50 wt % silica, having dispersed thereon a rare earth oxide.
Claim 3
Dependent Claim
25 words
A catalyst composition according to claim I wherein said Group IVB oxide is present in an amount of about 0.1 to about 15 weight percent.
Claim 4
Dependent Claim
26 words
A catalyst composition according to claim 1 wherein said Group IVB oxide is selected from the group consisting of silica, germania, tin oxide and mixtures thereof.
Claim 5
Dependent Claim
15 words
A catalyst composition according to claim 2 wherein said Group IVB oxide is preferably silica.
Claim 6
Dependent Claim
26 words
A catalyst composition according to claim 1 wherein said Group VIII noble metal is present in an amount of about 0.01 to about 10 weight percent.
Claim 7
Dependent Claim
22 words
A catalyst composition according to claim I wherein said silica-alumina support has a ratio of silica:alumina of about 50:50 to about 95:5.
Claim 8
Dependent Claim
28 words
A catalyst composition according to claim 1 wherein said Group VIII noble metal is selected from the group consisting of platinum, iridium, rhodium, palladium, ruthenium and mixtures thereof.
Claim 9
Dependent Claim
15 words
A catalyst composition according to claim 1 wherein said Group VIII noble metal is platinum.
Claim 10
Dependent Claim
26 words
A catalyst composition according to claim 1 wherein said rare earth oxide is present in an amount between about 1 wt % and 90 wt %.
Claim 11
Dependent Claim
36 words
A catalyst composition according to claim 1 wherein said rare earth oxide is selected from the group consisting of oxides of the elements of the periodic table having atomic numbers from 57 through 71 and 39.
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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) | 1996-10-18 | 1997-04-19 | 1997-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-10-18 | 2001-04-19 | 2001-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-10-18 | 2005-04-19 | 2005-10-19 | $7700.00 | Window Closed / Lapsed |