US4536482A
Expired / Lapsed
US
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Catalyst composition
Assignee: EIDP Inc
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Filing: 1984-10-31
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Granted: 1985-08-20
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Expires: 2004-10-31
Abstract
Abstract A catalyst is disclosed wherein a particulate catalyst support has cosputtered on its surface a mixture of a catalytically active metal such as Pt, Pd, Ag, Au, Re, Rh, Ru or Ir and a cosputtered support material which preferably is the same material as the catalyst support.
Inventors
- 👤 Peter F. Carcia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:47
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/48; B01J23/16; B01J23/32; B01J23/36; B01J23/40; B01J37/00; B01J37/34; B01J37/341; B01J37/347
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
76 words
A composite catalyst comprising a particulate support having a surface area of less than 10 m 2 /g and a particle size of greater than 100 μm having sputtered on the surface thereof and intimately adhered thereto from 0.01 to 5.0 weight percent as based on the total catalyst of a catalytically active metal and a cosputtered support material in such amount that the catalytically active metal comprises from 3-80 volume percent of the sputtered material.
Claim 2
Dependent Claim
76 words
A composite catalyst comprising a particulate support having a surface area of less than 10 m 2 /g and a particle size of greater than 100 μm having sputtered on the surface thereof and intimately adhered thereto from 0.01 to 5.0 weight percent as based on the total catalyst of a catalytically active metal and a cosputtered support material in such amount that the catalytically active metal comprises from 3-80 volume percent of the sputtered material.
Claim 3
Dependent Claim
19 words
The catalyst of claim 1 wherein the cosputtered support material is of the same composition as the particulate support.
Claim 4
Dependent Claim
13 words
The catalyst of claim 2 wherein the particulate support is a refractory material.
Claim 5
Dependent Claim
15 words
The catalyst of claim 3 wherein the particulate support is an oxide, nitride or carbide.
Claim 6
Dependent Claim
28 words
The catalyst of claim 4 wherein the particulate support is SiO 2 , Al 2 O 3 , TiO 2 , SiC, or Si 3 N 4 .
Claim 7
Dependent Claim
23 words
The catalyst of claim 5 wherein the catalytically active metal is Pt, Pd, Ag, Au, Re, Rh, Ru or Ir and mixtures thereof.
Claim 8
Dependent Claim
19 words
The catalyst of claim 6 wherein the particulate material is Al 2 O 3 , SiO 2 or MgO.
Claim 9
Dependent Claim
16 words
The catalyst of claim 7 wherein the catalytically active metal is Ag, Ag/Au, Pd or Pt.
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) | 1988-08-19 | 1989-02-18 | 1989-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-19 | 1993-02-18 | 1993-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-19 | 1997-02-18 | 1997-08-20 | $7700.00 | Window Closed / Lapsed |