US4504597A
Expired / Lapsed
US
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Cupreous catalyst and process making same
Assignee: SCM Metal Products Inc
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Filing: 1984-02-16
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Granted: 1985-03-12
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Expires: 2004-02-16
Abstract
Abstract A grind charge of cupreous particulates containing a major proportion of cuprous and cupric oxides and a minor proportion of elemental copper, said charge having average particle size above 15 microns, is subjected to high energy comminution with concomitant crystal lattice distortion until the average particle size of said particulates is no larger than 15 microns. The resulting catalyst, of fairly high specific surface area, can be used for alkyl or aryl halosilane production.
Inventors
- 👤 Erhard Klar
- 👤 Don H. Hashiguchi
- 👤 Ronald J. Dietrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:09
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/0009; B01J37/0027; B01J37/0036; B01J23/00; B01J23/70; B01J23/72; B01J23/74; B01J23/745; B01J23/76; B01J23/80; C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12; C07F7/16
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
105 words
A process for producing catalyst from cupreous particulates containing a major proportion of cuprous and cupric oxides and a minor proportion of elemental copper which is characterized by: providing a grind charge of said particulates having average particle size above 15 microns, said charge containing zero to about 10% of promoter-providing material selected from the elements aluminum, zinc and iron, the oxides of aluminum, zinc and iron, the chlorides of aluminum, zinc, copper and iron, silica, aluminosilicates, or below 0.05% antimony promoter; and subjecting said charge to high energy comminution until the average particle size of the resulting grind is no larger than 15 microns.
Claim 2
Dependent Claim
105 words
A process for producing catalyst from cupreous particulates containing a major proportion of cuprous and cupric oxides and a minor proportion of elemental copper which is characterized by: providing a grind charge of said particulates having average particle size above 15 microns, said charge containing zero to about 10% of promoter-providing material selected from the elements aluminum, zinc and iron, the oxides of aluminum, zinc and iron, the chlorides of aluminum, zinc, copper and iron, silica, aluminosilicates, or below 0.05% antimony promoter; and subjecting said charge to high energy comminution until the average particle size of the resulting grind is no larger than 15 microns.
Claim 3
Dependent Claim
36 words
The process of claim 1 wherein said cupreous particulates contain about 75-95% cuprous oxide, about 2-10% cupric oxide, and about 2-15% elemental copper, and said grind charge has particle size no coarser than about 80 mesh.
Claim 4
Dependent Claim
42 words
The process of claim 1 wherein said cupreous particulates contain about 30-75% cuprous oxide, about 10-45% cupric oxide, and about 4-25% elemental copper, and said grind charge has at least about 95% of its particles not substantially larger than about 325 mesh.
Claim 5
Dependent Claim
25 words
The process of claim 1 wherein at least the major proportion of said cupreous particulates for the grind charge are the products of pyrometallurgical processing.
Claim 6
Dependent Claim
22 words
The process of claim 4 wherein said cupreous particulates consist essentially of oxidized elemental copper that has been alloyed with promoter-providing material.
Claim 7
Dependent Claim
88 words
Particulate, high cuprous oxide catalyst for alkyl or aryl halosilane production, said catalyst consisting essentially of about 75-95% cuprous oxide, about 2-10% cupric oxide, about 2-15% elemental copper, and zero to about 10% promoter selected from the elements aluminum, zinc and iron, the oxides of aluminum, zinc and iron, the chlorides of aluminum, zinc, copper and iron, silica, aluminosilicates, or below 0.05% antimony promoter and having surface area of about 1-8 square meters per gram, average particle size no larger than 15 microns, and exhibiting crystal lattice distortion.
Claim 8
Dependent Claim
88 words
Particulate, high cuprous oxide catalyst for alkyl or aryl halosilane production, said catalyst consisting essentially of about 75-95% cuprous oxide, about 2-10% cupric oxide, about 2-15% elemental copper, and zero to about 10% promoter selected from the elements aluminum, zinc and iron, the oxides of aluminum, zinc and iron, the chlorides of aluminum, zinc, copper and iron, silica, aluminosilicates, or below 0.05% antimony promoter and having surface area of about 1-8 square meters per gram, average particle size no larger than 15 microns, and exhibiting crystal lattice distortion.
Claim 9
Dependent Claim
21 words
The catalyst of claim 6 whose particulates contain promoter derived from the oxidation of an alloy of copper with promoter-providing material.
Claim 10
Dependent Claim
88 words
Particulate medium content cuprous oxide catalyst for alkyl or aryl halosilane production, said catalyst consisting essentially of about 30-75% cuprous oxide, about 10-45% cupric oxide, about 4-25% elemental copper, and zero to about 10% promoter selected from the elements aluminum, zinc and iron, the oxides of aluminum, zinc and iron, the chlorides of aluminum, zinc, copper and iron, silica, aluminosilicates, or below 0.05% antimony promoter and having specific surface area of about 2.5-8 square meters per gram, average particle size below 15 microns, and exhibiting crystal lattice distortion.
Claim 11
Dependent Claim
88 words
Particulate medium content cuprous oxide catalyst for alkyl or aryl halosilane production, said catalyst consisting essentially of about 30-75% cuprous oxide, about 10-45% cupric oxide, about 4-25% elemental copper, and zero to about 10% promoter selected from the elements aluminum, zinc and iron, the oxides of aluminum, zinc and iron, the chlorides of aluminum, zinc, copper and iron, silica, aluminosilicates, or below 0.05% antimony promoter and having specific surface area of about 2.5-8 square meters per gram, average particle size below 15 microns, and exhibiting crystal lattice distortion.
Claim 12
Dependent Claim
21 words
The catalyst of claim 8 whose particulates contain promoter derived from the oxidation of an alloy of copper with promoter-providing material.
References Cited (Backward Citations)
US2443902A
Cited
US2889350A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-03-11 | 1988-09-10 | 1989-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-11 | 1992-09-10 | 1993-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-11 | 1996-09-10 | 1997-03-12 | $7700.00 | Window Closed / Lapsed |