US3907715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing metal containing composition
Assignee: Chiyoda Corp
•
Filing: 1973-02-23
•
Granted: 1975-09-23
•
Expires: 1993-02-23
Abstract
Abstract Solid dispersions of alumina and one or more metal or metal oxides, useful as catalysts and the preparation of ceramic materials, are provided. These dispersions are prepared from complexes represented by the formula:
Inventors
- 👤 Tomio Arai
- 👤 Suguru Fukui
- 👤 Tatsuo Morimoto
- 👤 Hajime Kitazato
- 👤 Tohru Yokoyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:05
CPC Classifications
C; C01; C01B; C01B13/00; C01B13/14; C01B13/36; B; B01; B01J; B01J37/00; B01J37/02; B01J37/03; B01J37/036; C01P; C01P2002/00; C01P2002/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
72 words
A PROCESS FOR PRODUCTING A DISPERSED SYSTEM COMPOSED OF ALUMINA AND ONE OR MORE METALS HAVING HIGHER SINGLE ELECTRODE POTENTIALS THAN THAT OF ALUMINUM OR THE OXIDES OF SUCH METALS COMPRISING THE STEPS OF DRYING AND CALCINING AN AQUEOUS SOLUTION OF ONE OR MORE WATER SOLUBLE METAL COMPLEXES CONTAINING ALUMINUM AND ONE OR MORE METALS HAVING A HIGHER STANDARD REDUCTION SINGLE ELECTRODE POTENTIAL THAN THAT OF ALUMINUM AND REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
72 words
A PROCESS FOR PRODUCTING A DISPERSED SYSTEM COMPOSED OF ALUMINA AND ONE OR MORE METALS HAVING HIGHER SINGLE ELECTRODE POTENTIALS THAN THAT OF ALUMINUM OR THE OXIDES OF SUCH METALS COMPRISING THE STEPS OF DRYING AND CALCINING AN AQUEOUS SOLUTION OF ONE OR MORE WATER SOLUBLE METAL COMPLEXES CONTAINING ALUMINUM AND ONE OR MORE METALS HAVING A HIGHER STANDARD REDUCTION SINGLE ELECTRODE POTENTIAL THAN THAT OF ALUMINUM AND REPRESENTED BY THE FORMULA:
Claim 3
Dependent Claim
94 words
A procesS for producing a dispersed system composed of alumina and one or more metals having higher standard reduction single electrode potentials than that of aluminum or the oxides of such metals comprising the steps of gelling an aqueous solution of one or more metal complexes described in claim 1 by treatment of said complex at a temperature between room temperature and 100*C. with an effective amount of gelling agent said gelling agent being a weak base with a dissociation constant of less than 10 4, and then drying and calcining the resultant gel.
Claim 4
Dependent Claim
32 words
A process according to claim 1 in which M is selected from the group consisting of manganese, zirconium, chromium, molybdenum, iron, cobalt, nickel, tin and platinum and X is chloro or nitrate.
Claim 5
Dependent Claim
32 words
A process according to claim 2 in which M is selected from the group consisting of manganese, zirconium, chromium, molybdenum, iron, cobalt, nickel, tin and platinum and X is chloro or nitrate.
Claim 6
Dependent Claim
91 words
A process for producing a dispersed system composed of alumina and one or more metals having higher standard reduction single electrode potentials than that of aluminum or the oxides of such metals comprising the steps of gelling or precipitating an aqueous solution of one or more metal complexes described in claim 1 by treatment of said complex with an effective amount of a gelling or precipitating agent, said agent being a base which forms with said metal complex a decomposable salt, and then drying and calcining the resultant gel or precipitate.
Claim 7
Dependent Claim
39 words
A process according to claim 5 in which the gelling or precipitating agent is selected from the group consisting of ammonium hydroxide, ammonium bicarbonate, ammonium carbonate and a weak base with a dissociation constant of less than 10 4.
Claim 8
Dependent Claim
32 words
A process according to claim 5 in which M is selected from the group consisting of manganese, zirconium, chromium, molybdenum, iron, cobalt, nickel, tin, and platinum, and X is chloro or nitrate.
Claim 9
Dependent Claim
72 words
A process for producing a dispersed system composed of alumina and one or more metals having higher standard reduction single electrode potentials than that of aluminum or the oxides of such metals comprising the steps of precipitating an aqueous solution of one or more metal complexes described in claim 1 by treatment of said complex with a strong alkali or alkaline earth metal base, and then drying and calcining the resultant precipitate.
Claim 10
Dependent Claim
32 words
A process according to claim 8 in which M is selective from the group consisting of manganese, zirconium, chromium, molybdenum, iron, cobalt, nickel, zinc and platinum, and X is chloro or nitrate.
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) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |