Patent US4252690A successfully refreshed from Google Patents.
US4252690A
Expired / Lapsed
US
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Metallic catalyst and process for preparing the same
Assignee: Hitachi Ltd
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Filing: 1978-10-11
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Granted: 1981-02-24
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Expires: 1998-10-11
Abstract
Abstract A metallic catalyst of three-layer structure of a carrier metal, an interlayer metal having a heat-insulating property by itself, or an interlayer metal capable of forming an oxide having a heat-insulating property or a catalyst surface area-increasing property, deposited on the entire surface of the carrier metal, and a catalyst metal deposited on the interlayer metal is prepared in a shorter production time at a lower cost through simplified process steps by depositing the interlayer metal and the catalyst metal by plating, if necessary, followed by oxidation, or both oxidation and reduction. The metallic catalyst has an improved catalytic activity, especially at a low temperature, in addition to the high mechanical strength.
Inventors
- 👤 Kunio Kamiya
- 👤 Hideo Yusa
- 👤 Hiroyuki Tsuchiya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:56
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/74; B01D53/86; B01D53/88; B01D53/885; B01D53/92; B01D53/94; B01D53/944; B01J; B01J37/00; B01J37/02; B01J37/024; B01J2235/00; B01J2235/30; B01J35/00; B01J35/30
Claims Analysis
Total Claims: 61
Claim 1
Independent Claim
68 words
A metallic catalyst, which comprises a carrier metal, an interlayer metal having a good heat-insulating property or a good catalyst surface area-increasing property deposited on the entire surface of the carrier metal, and a catalyst metal deposited on the interlayer metal wherein the interlayer metal having a good heat-insulating property is a metal having a low heat conductivity by itself and is titanium, zirconium, antimony, or their alloys.
Claim 2
Dependent Claim
68 words
A metallic catalyst, which comprises a carrier metal, an interlayer metal having a good heat-insulating property or a good catalyst surface area-increasing property deposited on the entire surface of the carrier metal, and a catalyst metal deposited on the interlayer metal wherein the interlayer metal having a good heat-insulating property is a metal having a low heat conductivity by itself and is titanium, zirconium, antimony, or their alloys.
Claim 3
Dependent Claim
15 words
A metallic catalyst according to claim 1, wherein the carrier metal is a porous metal.
Claim 4
Dependent Claim
17 words
A metallic catalyst according to claim 1, wherein the catalyst metal has a catalytic activity by oxidation.
Claim 5
Dependent Claim
20 words
A metallic catalyst according to claim 1, wherein the catalyst metal has a catalytic activity by oxidation and successive reduction.
Claim 6
Dependent Claim
19 words
A metallic catalyst according to claim 1, wherein the interlayer metal and the catalyst metal are deposited by plating.
Claim 7
Dependent Claim
98 words
A metallic catalyst, which comprises a carrier metal, an interlayer metal having a good heat-insulating property or a good catalyst surface area-increasing property or both deposited on the entire surface of the carrier metal, and a catalyst metal electroplated on the interlayer metal wherein the interlayer metal and the catalyst metal are oxidized after the catalyst metal is electroplated on the interlayer metal, and also wherein the interlayer metal is a metal capable of forming an oxide having a low heat conductivity or a catalyst area-increasing property or both and is titanium, palladium, zirconium, antimony, or their alloys.
Claim 8
Dependent Claim
98 words
A metallic catalyst, which comprises a carrier metal, an interlayer metal having a good heat-insulating property or a good catalyst surface area-increasing property or both deposited on the entire surface of the carrier metal, and a catalyst metal electroplated on the interlayer metal wherein the interlayer metal and the catalyst metal are oxidized after the catalyst metal is electroplated on the interlayer metal, and also wherein the interlayer metal is a metal capable of forming an oxide having a low heat conductivity or a catalyst area-increasing property or both and is titanium, palladium, zirconium, antimony, or their alloys.
Claim 9
Dependent Claim
26 words
A metallic catalyst comprising a nickel porous metal carrier, a chromium or its alloy interlayer metal, and a palladium catalyst deposited on the interlayer by plating.
Claim 10
Dependent Claim
26 words
A metallic catalyst comprising a nickel porous metal carrier, a chromium or its alloy interlayer metal, and a palladium catalyst deposited on the interlayer by plating.
Claim 11
Dependent Claim
76 words
A metallic catalyst which comprises a carrier metal, an interlayer metal having a good heat-insulating property or a good catalyst surface area-increasing property or both deposited on the entire surface of the carrier metal, and a catalyst metal deposited on the interlayer metal wherein the interlayer metal is a metal capable of forming an oxide having a low heat conductivity or a catalyst area-increasing property or both and is titanium, palladium, zirconium, antimony, or their alloys.
Claim 12
Dependent Claim
76 words
A metallic catalyst which comprises a carrier metal, an interlayer metal having a good heat-insulating property or a good catalyst surface area-increasing property or both deposited on the entire surface of the carrier metal, and a catalyst metal deposited on the interlayer metal wherein the interlayer metal is a metal capable of forming an oxide having a low heat conductivity or a catalyst area-increasing property or both and is titanium, palladium, zirconium, antimony, or their alloys.
Claim 13
Dependent Claim
17 words
A metallic catalyst according to claim 6 or 8, wherein the carrier metal is a porous metal.
Claim 14
Dependent Claim
17 words
A metallic catalyst according to claim 8, wherein the catalyst metal has a catalytic activity by oxidation.
Claim 15
Dependent Claim
20 words
A metallic catalyst according to claim 8, wherein the catalyst metal has a catalytic activity by oxidation and successive reduction.
Claim 16
Dependent Claim
19 words
A metallic catalyst according to claim 8, wherein the interlayer metal and the catalyst metal are deposited by plating.
Claim 17
Dependent Claim
14 words
The metallic catalyst of claim 6, wherein the interlayer metal is deposited by plating.
Claim 18
Dependent Claim
89 words
A process for preparing a metallic catalyst which comprises a carrier metal, an interlayer metal having a good heat-insulating property or a good catalyst surface area-increasing property deposited on the entire surface of the carrier metal, and a catalyst metal deposited on the interlayer metal wherein the interlayer metal is titanium, zirconium, antimony or their alloys, comprising the steps of: providing a carrier metal; depositing the interlayer metal on the entire surface of the carrier metal by plating; and depositing the catalyst metal on the interlayer metal by plating.
Claim 19
Dependent Claim
89 words
A process for preparing a metallic catalyst which comprises a carrier metal, an interlayer metal having a good heat-insulating property or a good catalyst surface area-increasing property deposited on the entire surface of the carrier metal, and a catalyst metal deposited on the interlayer metal wherein the interlayer metal is titanium, zirconium, antimony or their alloys, comprising the steps of: providing a carrier metal; depositing the interlayer metal on the entire surface of the carrier metal by plating; and depositing the catalyst metal on the interlayer metal by plating.
Claim 20
Dependent Claim
14 words
A process according to claim 14, wherein the carrier metal is a porous metal.
Claim 21
Dependent Claim
25 words
A process according to claim 14, wherein the step of oxidizing a catalyst metal is followed by a step of oxidizing the deposited catalyst metal.
Claim 22
Dependent Claim
36 words
A process according to claim 14, wherein the step of depositing a catalyst metal is followed by a step of oxidizing the deposited catalyst metal, and further by a step of reducing the oxidized catalyst metal.
Claim 23
Dependent Claim
19 words
A process according to claim 14, wherein the interlayer metal and the catalyst metal are successively deposited by plating.
Claim 24
Dependent Claim
24 words
A process according to claim 14, wherein the interlayer metal is plated by electroplating or dipping, and the catalyst metal is plated by electroplating.
Claim 25
Dependent Claim
12 words
The process of claim 14, wherein the steps of plating are electroplating.
Claim 26
Dependent Claim
118 words
A process for preparing a metallic catalyst, which comprises a carrier metal, an interlayer metal having a good heat-insulating property or a good catalyst surface area-increasing property or both deposited on the entire surface of the carrier metal, and a catalyst metal electroplated on the interlayer metal wherein the interlayer metal is a metal capable of forming an oxide having a low heat conductivity or a catalyst area-increasing property or both and is aluminum, titanium, palladium, zirconium, antimony, or their alloys comprising the steps of: providing a carrier metal; depositing the interlayer metal on the carrier metal by electroplating; depositing the catalyst metal on the interlayer metal by electroplating; and oxidizing the interlayer metal and the catalyst metal.
Claim 27
Dependent Claim
118 words
A process for preparing a metallic catalyst, which comprises a carrier metal, an interlayer metal having a good heat-insulating property or a good catalyst surface area-increasing property or both deposited on the entire surface of the carrier metal, and a catalyst metal electroplated on the interlayer metal wherein the interlayer metal is a metal capable of forming an oxide having a low heat conductivity or a catalyst area-increasing property or both and is aluminum, titanium, palladium, zirconium, antimony, or their alloys comprising the steps of: providing a carrier metal; depositing the interlayer metal on the carrier metal by electroplating; depositing the catalyst metal on the interlayer metal by electroplating; and oxidizing the interlayer metal and the catalyst metal.
Claim 28
Dependent Claim
105 words
A process for preparing a metallic catalyst which comprises a carrier metal, an interlayer metal having a good heat-insulating property or a good catalyst surface area-increasing property or both deposited on the entire surface of the carrier metal, and a catalyst metal deposited on the interlayer metal wherein the interlayer metal is a metal capable of forming an oxide having a low heat conductivity or a catalyst area-increasing property or both and is titanium, palladium, zirconium, antimony, or their alloys, comprising the steps of: providing a carrier metal; depositing the interlayer metal on the carrier metal; and depositing the catalyst metal on the interlayer metal.
Claim 29
Dependent Claim
105 words
A process for preparing a metallic catalyst which comprises a carrier metal, an interlayer metal having a good heat-insulating property or a good catalyst surface area-increasing property or both deposited on the entire surface of the carrier metal, and a catalyst metal deposited on the interlayer metal wherein the interlayer metal is a metal capable of forming an oxide having a low heat conductivity or a catalyst area-increasing property or both and is titanium, palladium, zirconium, antimony, or their alloys, comprising the steps of: providing a carrier metal; depositing the interlayer metal on the carrier metal; and depositing the catalyst metal on the interlayer metal.
Claim 30
Dependent Claim
102 words
A process for preparing a metallic catalyst, which comprises a carrier metal, an interlayer metal having a good heat-insulating property or a good catalyst surface area-increasing property or both deposited on the entire surface of the carrier metal and a catalyst metal deposited on the interlayer metal wherein the metal having a good catalyst surface area-increasing property is aluminum, titanium, palladium, zirconium or antimony comprising the steps of: providing a carrier metal; depositing the interlayer metal on the carrier metal by electroplating; depositing the catalyst metal on the interlayer metal by electroplating; and thereafter oxidizing the interlayer metal and the catalyst metal.
Claim 31
Dependent Claim
102 words
A process for preparing a metallic catalyst, which comprises a carrier metal, an interlayer metal having a good heat-insulating property or a good catalyst surface area-increasing property or both deposited on the entire surface of the carrier metal and a catalyst metal deposited on the interlayer metal wherein the metal having a good catalyst surface area-increasing property is aluminum, titanium, palladium, zirconium or antimony comprising the steps of: providing a carrier metal; depositing the interlayer metal on the carrier metal by electroplating; depositing the catalyst metal on the interlayer metal by electroplating; and thereafter oxidizing the interlayer metal and the catalyst metal.
Claim 32
Dependent Claim
16 words
A process according to claim 21, or 23 wherein the carrier metal is a porous metal.
Claim 33
Dependent Claim
19 words
A process according to claim 22, wherein the interlayer metal and the catalyst metal are successively deposited by plating.
Claim 34
Dependent Claim
24 words
A process according to claim 22, where the interlayer metal is plated by electroplating or dipping and the catalyst metal is plated by electroplating.
Claim 35
Dependent Claim
25 words
A process according to claim 22, wherein the step of depositing the interlayer metal is followed by a step of oxidizing the deposited interlayer metal.
Claim 36
Dependent Claim
25 words
A process according to claim 22, wherein the step of depositing a catalyst metal is followed by a step of oxidizing the deposited catalyst metal.
Claim 37
Dependent Claim
36 words
A process according to claim 22, wherein the step of depositing a catalyst metal is followed by a step of oxidizing the deposited catalyst metal and further by a step of reducing the oxidized catalyst metal.
Claim 38
Dependent Claim
69 words
A metallic catalyst prepared according to the process comprising the steps of: providing a carrier metal; depositing on the entire surface of the carrier metal an interlayer metal having a good heat-insulating property or a good catalyst surface area-increasing property, the interlayer metal being a metal having a low heat conductivity by itself and being titanium, zirconium, antimony, or their alloys; and depositing a catalyst on the interlayer metal.
Claim 39
Dependent Claim
69 words
A metallic catalyst prepared according to the process comprising the steps of: providing a carrier metal; depositing on the entire surface of the carrier metal an interlayer metal having a good heat-insulating property or a good catalyst surface area-increasing property, the interlayer metal being a metal having a low heat conductivity by itself and being titanium, zirconium, antimony, or their alloys; and depositing a catalyst on the interlayer metal.
Claim 40
Dependent Claim
94 words
A metallic catalyst prepared according to the process comprising the steps of: providing a carrier metal; depositing on the entire surface of the carrier metal an interlayer metal having a good heat-insulating property or a good catalyst surface area-increasing property or both, the interlayer metal being a metal capable of forming an oxide having a low heat conductivity or a catalyst area-increasing property or both and also being titanium, palladium, zirconium, antimony or their alloys; depositing by electroplating a catalyst on the interlayer metal; and thereafter oxidizing the interlayer metal and the catalyst metal.
Claim 41
Dependent Claim
94 words
A metallic catalyst prepared according to the process comprising the steps of: providing a carrier metal; depositing on the entire surface of the carrier metal an interlayer metal having a good heat-insulating property or a good catalyst surface area-increasing property or both, the interlayer metal being a metal capable of forming an oxide having a low heat conductivity or a catalyst area-increasing property or both and also being titanium, palladium, zirconium, antimony or their alloys; depositing by electroplating a catalyst on the interlayer metal; and thereafter oxidizing the interlayer metal and the catalyst metal.
Claim 42
Dependent Claim
83 words
A metallic catalyst prepared according to the process comprising the steps of: providing a carrier metal; depositing on the entire surface of the carrier metal an interlayer metal having a good heat-insulating property or a good catalyst surface area-increasing property or both, the interlayer metal being a metal capable of forming an oxide having a low heat conductivity or a catalyst area-increasing property or both and also being titanium, palladium, zirconium, antimony, or their alloys; and depositing a catalyst on the interlayer metal.
Claim 43
Dependent Claim
83 words
A metallic catalyst prepared according to the process comprising the steps of: providing a carrier metal; depositing on the entire surface of the carrier metal an interlayer metal having a good heat-insulating property or a good catalyst surface area-increasing property or both, the interlayer metal being a metal capable of forming an oxide having a low heat conductivity or a catalyst area-increasing property or both and also being titanium, palladium, zirconium, antimony, or their alloys; and depositing a catalyst on the interlayer metal.
Claim 44
Dependent Claim
22 words
A metallic catalyst prepared according to the process of claim 30, 31 or 32, wherein the carrier metal is a porous metal.
Claim 45
Dependent Claim
32 words
A metallic catalyst prepared according to the process of claim 30 or 32, wherein the step of depositing the interlayer metal is followed by a step of oxidizing the deposited interlayer metal.
Claim 46
Dependent Claim
27 words
A process according to claim 30 or 32, wherein the step of depositing a catalyst metal is followed by a step of oxidizing the deposited catalyst metal.
Claim 47
Dependent Claim
43 words
A metallic catalyst prepared according to the process of claim 30 or 32, wherein the step of depositing a catalyst metal is followed by a step of oxidizing the deposited catalyst metal, and further by a step of reducing the oxidized catalyst metal.
Claim 48
Dependent Claim
26 words
A metallic catalyst prepared according to the process of claim 30 or 32, wherein the interlayer metal and the catalyst metal are successively deposited by plating.
Claim 49
Dependent Claim
31 words
A metallic catalyst prepared according to the process of claim 30 or 32, wherein the interlayer metal is deposited by electroplating or dipping, and the catalyst metal is deposited by electroplating.
Claim 50
Dependent Claim
19 words
A metallic catalyst prepared according to the process of claim 31, wherein the interlayer metal is deposited by electroplating.
Claim 51
Dependent Claim
15 words
A metallic catalyst according to claim 6, wherein the catalyst metal has activity by reduction.
Claim 52
Dependent Claim
15 words
A metallic catalyst according to claim 6, wherein the interlayer metal is deposited by plating.
Claim 53
Dependent Claim
24 words
A process according to claim 21 or claim 23 wherein the oxidizing step is followed by a step of reducing the oxidized catalyst metal.
Claim 54
Dependent Claim
19 words
A metallic catalyst prepared according to the process of claim 31, wherein the interlayer metal is deposited by plating.
Claim 55
Dependent Claim
33 words
A metallic catalyst comprising a carrier metal, a chromium interlayer metal deposited on the entire surface of the carrier metal by plating, and a palladium catalyst deposited on the interlayer metal by plating.
Claim 56
Dependent Claim
33 words
A metallic catalyst comprising a carrier metal, a chromium interlayer metal deposited on the entire surface of the carrier metal by plating, and a palladium catalyst deposited on the interlayer metal by plating.
Claim 57
Dependent Claim
52 words
A process for preparing a metallic catalyst, comprising a carrier metal, a chromium interlayer deposited on the entire surface of the carrier metal, and a palladium catalyst deposited on the interlayer, comprising the steps of: providing a carrier metal; depositing the chromium interlayer by plating; and depositing the palladium catalyst by plating.
Claim 58
Dependent Claim
52 words
A process for preparing a metallic catalyst, comprising a carrier metal, a chromium interlayer deposited on the entire surface of the carrier metal, and a palladium catalyst deposited on the interlayer, comprising the steps of: providing a carrier metal; depositing the chromium interlayer by plating; and depositing the palladium catalyst by plating.
Claim 59
Dependent Claim
27 words
The process of claim 45 further including: oxidizing the chromium interlayer and palladium catalyst after the palladium is deposited on the chromium; and reducing the oxidized palladium.
Claim 60
Dependent Claim
40 words
A metallic catalyst prepared according to the process comprising the steps of: providing a carrier metal; depositing a chromium interlayer on the entire surface of the carrier metal by plating; and depositing a palladium catalyst on the interlayer by plating.
Claim 61
Dependent Claim
40 words
A metallic catalyst prepared according to the process comprising the steps of: providing a carrier metal; depositing a chromium interlayer on the entire surface of the carrier metal by plating; and depositing a palladium catalyst on the interlayer by plating.
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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) | 1984-02-24 | 1984-08-25 | 1985-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-24 | 1988-08-25 | 1989-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-24 | 1992-08-25 | 1993-02-24 | $7700.00 | Window Closed / Lapsed |