US4237032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalysts
Assignee: Johnson Matthey PLC
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Filing: 1978-06-06
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Granted: 1980-12-02
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Expires: 1998-06-06
Abstract
Abstract A supported catalyst suitable for catalyzing oxidation and reduction processes in a gas and capable of removing oxygen from a gas containing an excess of oxygen and restoring at least a part of such removed oxygen to a gas having an oxygen deficiency, comprising (A) a substrate; (B) a washcoat on said substrate comprising at least one refractory metal oxide and nickel; and (C) a catalytically active coating attached to said substrate by said washcoat, said catalytically active coating comprising at least one of the precious metals platinum, rhodium, ruthenium, palladium, iridium, osmium, gold and silver.
Inventors
- 👤 William D. J. Evans
- 👤 Robert J. Larbey
- 👤 Thomas I. Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:59
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/89; B01J23/38; B01J23/54; B01J23/8933; Y; Y10; Y10S; Y10S502/00; Y10S502/525
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
105 words
A supported catalyst suitable for catalyzing oxidation and reduction processes in a gas and capable of removing oxygen from a gas containing an excess of oxygen and restoring at least a part of such removed oxygen to a gas having an oxygen deficiency, comprising (A) a substrate; (B) a washcoat as a support on said substrate comprising at least one refractory metal oxide and nickel and cerium as base metal components; and (C) a catalytically active coating attached to said substrate by said washcoat, said catalytically active coating comprising at least one of the precious metals platinum, rhodium, ruthenium, palladium, iridium, osmium, gold and silver.
Claim 2
Dependent Claim
105 words
A supported catalyst suitable for catalyzing oxidation and reduction processes in a gas and capable of removing oxygen from a gas containing an excess of oxygen and restoring at least a part of such removed oxygen to a gas having an oxygen deficiency, comprising (A) a substrate; (B) a washcoat as a support on said substrate comprising at least one refractory metal oxide and nickel and cerium as base metal components; and (C) a catalytically active coating attached to said substrate by said washcoat, said catalytically active coating comprising at least one of the precious metals platinum, rhodium, ruthenium, palladium, iridium, osmium, gold and silver.
Claim 3
Dependent Claim
37 words
A catalyst according to claim 1 including a total of not less than 5 wt.% base metal component in said catalyst, considered in relation to the total quantity of base and precious metal present in the catalyst.
Claim 4
Dependent Claim
16 words
A catalyst according to claim 2 containing a total of 25 to 99.9 wt.% base metal.
Claim 5
Dependent Claim
16 words
A catalyst according to claim 3 containing a total of 70 to 97 wt.% base metal.
Claim 6
Dependent Claim
11 words
A catalyst according to claim 3 containing 94 wt.% base metal.
Claim 7
Dependent Claim
154 words
A supported catalyst suitable for catalyzing oxidation and reduction processes in a gas and capable of removing oxygen from a gas containing an excess of oxygen and restoring at least a part of such removed oxygen to a gas having an oxygen deficiency, comprising (A) a substrate; (B) a washcoat as a support on said substrate comprising at least one refractory metal oxide and a perovskite selected from the group consisting of La 0 .8 Sr 0 .2 CoO 3 , La 0 .8 Ba 0 .2 CoO 3 , La 0 .8 Ba 0 .2 Co 0 .987 Rh 0 .013 O 3 and La 0 .8 Sr 0 .2 Co 0 .98 Rh 0 .013 O 3 ; and (C) a catalytically active coating attached to said substrate by said washcoat, said catalytically active coating comprising at least one of the precious metals platinum, rhodium, ruthenium, palladium, iridium, osmium, gold and silver.
Claim 8
Dependent Claim
154 words
A supported catalyst suitable for catalyzing oxidation and reduction processes in a gas and capable of removing oxygen from a gas containing an excess of oxygen and restoring at least a part of such removed oxygen to a gas having an oxygen deficiency, comprising (A) a substrate; (B) a washcoat as a support on said substrate comprising at least one refractory metal oxide and a perovskite selected from the group consisting of La 0 .8 Sr 0 .2 CoO 3 , La 0 .8 Ba 0 .2 CoO 3 , La 0 .8 Ba 0 .2 Co 0 .987 Rh 0 .013 O 3 and La 0 .8 Sr 0 .2 Co 0 .98 Rh 0 .013 O 3 ; and (C) a catalytically active coating attached to said substrate by said washcoat, said catalytically active coating comprising at least one of the precious metals platinum, rhodium, ruthenium, palladium, iridium, osmium, gold and silver.
Claim 9
Dependent Claim
107 words
A supported catalyst suitable for catalyzing oxidation and reduction processes in a gas and capable of removing oxygen from a gas containing an excess of oxygen and restoring at least a part of such removed oxygen to a gas having an oxygen deficiency, comprising (A) a substrate; (B) a washcoat as a support on said substrate comprising at least one refractory metal oxide and barium and rhenium in the form of barium mesoperrhenate; and (C) a catalytically active coating attached to said substrate by said washcoat, said catalytically active coating comprising at least one of the precious metals platinum, rhodium, ruthenium, palladium, iridium, osmium, gold and silver.
Claim 10
Dependent Claim
107 words
A supported catalyst suitable for catalyzing oxidation and reduction processes in a gas and capable of removing oxygen from a gas containing an excess of oxygen and restoring at least a part of such removed oxygen to a gas having an oxygen deficiency, comprising (A) a substrate; (B) a washcoat as a support on said substrate comprising at least one refractory metal oxide and barium and rhenium in the form of barium mesoperrhenate; and (C) a catalytically active coating attached to said substrate by said washcoat, said catalytically active coating comprising at least one of the precious metals platinum, rhodium, ruthenium, palladium, iridium, osmium, gold and silver.
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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) | 1983-12-02 | 1984-06-02 | 1984-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-02 | 1988-06-02 | 1988-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-02 | 1992-06-02 | 1992-12-02 | $7700.00 | Window Closed / Lapsed |