US4207209A
Expired / Lapsed
US
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Sintered cataltyic or absorbent metallic product and method for sintering metallic powders
Assignee: Hitachi Ltd
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Filing: 1978-10-25
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Granted: 1980-06-10
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Expires: 1998-10-25
Abstract
Abstract The present invention relates to a method for sintering oxidized titanium powder and an active metallic component containing oxidized molybdenum as a binder for oxidized titanium granules. The active metallic component comprises one or more than one selected from a group consisting of V2O3, Fe2O3, WO3, Co2O3, NiO, Cr2O3, CeO2, SnO2, CuO, MoO3, Pt, Pd, Rh, Ru, Ir and Re. The method comprising the steps of: depositing vaporized oxidized molybdenum on the oxidized titanium powder in an atmosphere of molybdenum vapor at temperatures of 460 DEG to 650 DEG C., forming a powdery mixture comprising the oxidized titanium powder with the deposited oxidized molybdenum and said active metallic component, adding water sufficient to make a viscous material of the powdery mixture, kneading the viscous material, shaping an article by using the viscous material, and calcining the article to produce a product.
Inventors
- 👤 Shinpei Matsuda
- 👤 Youichi Sakuta
- 👤 Tomoichi Kamo
- 👤 Shigeo Uno
- 👤 Masato Takeuchi
- 👤 Jinichi Imahashi
- 👤 Hideo Okada
- 👤 Akira Kato
- 👤 Fumito Nakajima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:51
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/622; C04B35/626; C04B35/63; C04B35/6303; B; B01; B01D; B01D53/00; B01D53/34; B01D53/74; B01D53/86; B01D53/8621; B01D53/8625; B01D53/8628; B01J; B01J20/00; B01J20/02; B01J20/06; B01J21/00; B01J21/06; B01J21/063; B01J23/00; B01J23/16; B01J23/24; B01J23/28; C04B35/01; C04B35/46; C04B35/495; C04B35/62605; C04B35/62625; C04B35/6263; C04B35/628; C04B35/62802; C04B35/62805; C04B35/62818; C04B38/00; C04B38/0006; C04B2111/00; C04B2111/00474; C04B2111/0081; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/32; C04B2235/3224; C04B2235/3229; C04B2235/3231; C04B2235/3232; C04B2235/3239; C04B2235/3241; C04B2235/3256; C04B2235/3258; C04B2235/327; C04B2235/3272; C04B2235/3275; C04B2235/3279; C04B2235/3281; C04B2235/3293; C04B2235/40; C04B2235/408; C04B2235/60; C04B2235/602; C04B2235/6021
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
111 words
A method for sintering oxidized titanium and an active catalytic or adsorbent component with oxidized molybdenum as a binder for the oxidized titanium, comprising the steps of: depositing vaporized oxidized molybdenum on oxidized titanium powder in an atmosphere of molybdenum vapor at temperatures of 460° to 650° C., forming a powdery mixture comprising the oxidized titanium powders having the deposited oxidized molybdenum and the active catalytic or adsorbent component, adding water to the powdery mixture sufficient to make a viscous material, kneading the viscous material, shaping an article from the kneaded viscous material, and calcining the article to produce a sintered product wherein the oxidized molybdenum binds the oxidized titanium together.
Claim 2
Independent Claim
111 words
A method for sintering oxidized titanium and an active catalytic or adsorbent component with oxidized molybdenum as a binder for the oxidized titanium, comprising the steps of: depositing vaporized oxidized molybdenum on oxidized titanium powder in an atmosphere of molybdenum vapor at temperatures of 460° to 650° C., forming a powdery mixture comprising the oxidized titanium powders having the deposited oxidized molybdenum and the active catalytic or adsorbent component, adding water to the powdery mixture sufficient to make a viscous material, kneading the viscous material, shaping an article from the kneaded viscous material, and calcining the article to produce a sintered product wherein the oxidized molybdenum binds the oxidized titanium together.
Claim 3
Dependent Claim
40 words
The method of claim 1, wherein the sintered product comprises 31 to 99% by weight of oxidized titanium, at least 1% by weight of oxidized molybdenum and 1 to 69% by weight of the active component containing the oxidized molybdenum.
Claim 4
Dependent Claim
43 words
The method of claim 1, wherein the sintered product comprises 31 to 99% by weight of oxidized titanium 1 to 20% by weight of oxidized molybdenum, and 1 to 69% by weight of the active catalytic or adsorbent component containing the oxidized molybdenum.
Claim 5
Dependent Claim
21 words
The method of claim 1, including heating a titanium compound to form the oxidized titanium prior to said step of depositing.
Claim 6
Dependent Claim
12 words
The method of claim 4, wherein the titanium compound is titanic acid.
Claim 7
Dependent Claim
21 words
The method of claim 1, including heating a molybdenum compound to form the oxidized molybdenum prior to said step of depositing.
Claim 8
Dependent Claim
16 words
The method of claim 6, wherein the molybdenum compound is either molybdic acid or ammonium molybdate.
Claim 9
Dependent Claim
62 words
The method of claim 1, wherein an oxidized titanium or titanium compound which forms the oxidized titanium through a heat treatment and an oxidized molybdenum or molybdenum compound which forms the oxidized molybdenum through a heat treatment are mixed with each other and heated at the temperature to deposit vaporized oxidized molybdenum on the oxidized titanium powders during said step of depositing.
Claim 10
Dependent Claim
38 words
The method of claim 1, wherein the vaporized molybdenum is introduced to a closed container to which a titanium compound is carried to deposite the vaporized oxidized molybdenum on the oxidized titanium powders during said step of depositing.
Claim 11
Dependent Claim
21 words
The method of claim 1, wherein said step of depositing is carried out at a temperature of 500° to 610° C.
Claim 12
Dependent Claim
33 words
The method of claim 1, wherein the active catalytic or adsorbent component is mixed with the oxidized titanium powders before said step of depositing of the oxidized molybdenum on the oxidized titanium powders.
Claim 13
Dependent Claim
33 words
The method of claim 1, wherein the active catalytic or adsorbent component is mixed with the oxidized titanium powder after said step of depositing of the oxidized molybdenum on the oxidized titanium powders.
Claim 14
Dependent Claim
22 words
The method of claim 12, including heat treating the active catalytic or adsorbent component before the mixing with the oxidized titanium powders.
Claim 15
Dependent Claim
65 words
The method of claim 1, wherein the active catalytic or adsorbent component comprises one or more than one selected from the group consisting of V 2 O 3 , Fe 2 O 3 , WO 3 , Co 2 O 3 , NiO, Cr 2 O 3 , CeO 2 , SnO 2 , CuO, MoO 3 , Pt, Pd, Rh, Ru, Ir and Re.
Claim 16
Dependent Claim
30 words
The method of claim 1, 2, 3, 4, 5 or 7, wherein in said step of adding, the water is added in the range of 13 to 35% by weight.
Claim 17
Dependent Claim
45 words
The method of claim 1, 2, 3, 4, 5 or 7 wherein in said step of adding, the water is added in the range of 20 to 30% by weight, and a honeycomb structure is shaped with the viscous material during said step of shaping.
Claim 18
Dependent Claim
45 words
The method of claim 1, 2, 3, 4, 5 or 7, wherein in said step of adding, the water is added in the range of 20 to 30% by weight, and the viscous material is spread on a wire net during said step of shaping.
Claim 19
Dependent Claim
44 words
The method of claim 1, 2, 3, 4, 5 or 7, wherein in said step of adding, the water is added in the range of 25 to 35% by weight, and the viscous material is spread on a plate during said step of shaping.
Claim 20
Dependent Claim
47 words
The method of claim 1, 2, 3, 4, 5, or 7, wherein in said step of adding, the water is added in the range of 13 to 30% by weight, and the viscous material is formed in a shape of a pellet during said step of shaping.
Claim 21
Dependent Claim
98 words
A sintered product made by the process of: first depositing vaporized, oxidized molybdenum on oxidized titanium powder in an atmosphere of molybdenum vapor at temperatures of 460° to 650° C., then forming a powdery mixture comprising the oxidized titanium powders having the deposited oxidized molybdenum and an active catalytic or adsorbent component, then adding water to the powdery mixture sufficient to make a viscous material, then kneading the viscous material, then shaping an article from the kneaded viscous material, and finally calcining the article to produce a sintered product wherein the oxidized molybdenum binds the oxidized titanium together.
Claim 22
Dependent Claim
98 words
A sintered product made by the process of: first depositing vaporized, oxidized molybdenum on oxidized titanium powder in an atmosphere of molybdenum vapor at temperatures of 460° to 650° C., then forming a powdery mixture comprising the oxidized titanium powders having the deposited oxidized molybdenum and an active catalytic or adsorbent component, then adding water to the powdery mixture sufficient to make a viscous material, then kneading the viscous material, then shaping an article from the kneaded viscous material, and finally calcining the article to produce a sintered product wherein the oxidized molybdenum binds the oxidized titanium together.
Claim 23
Dependent Claim
16 words
The sintered product of claim 20, wherein the oxidized molybdenum comprises 1 to 20% by weight.
Claim 24
Dependent Claim
63 words
The sintered product of claim 20, wherein the active component comprises one or more than one selected from the group consisting of V 2 O 3 , Fe 2 O 3 , WO 3 , Co 2 O 3 , NiO, Cr 2 O 3 , CeO 2 , SnO 2 , CuO, MoO 3 , Pt, Pd, Rh, Ru, Ir and Re.
Claim 25
Dependent Claim
17 words
The sintered product of claim 20, wherein the sintered product comprises 31-99% by weight of oxidized titanium.
Claim 26
Dependent Claim
44 words
The sintered product of claim 20, wherein the sintered product comprises 1-69% by weight of active catalytic or adsorbent component, containing at least 1% by weight of oxidized molybdenum as a binder for the vaporized, oxidized molybdenum being deposited on the oxidized titanium granules.
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) | 1983-06-10 | 1983-12-10 | 1984-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-10 | 1987-12-10 | 1988-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-10 | 1991-12-10 | 1992-06-10 | $7700.00 | Window Closed / Lapsed |