US4446201A
Expired / Lapsed
US
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Transition metal aluminates supported on a substrate
Assignee: Dow Chemical Co
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Filing: 1983-05-13
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Granted: 1984-05-01
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Expires: 2003-05-13
Abstract
Abstract Crystalline transition metal aluminates conforming generally to the formula MAavZbv.nAl(OH)3.mH2O where M is a transition metal having a valence charge of +2 selected from the group consisting of Cu, Zn, Mn, Fe, Co, and Ni, where AZ represents negative valence ions or radicals, v is a negative valence of 1, 2, or 3, n is a value to provide a mol ratio of Al/M of at least 1/1, preferably at least 1.5/1, and m is an integer of from zero to the maximum for waters of hydration, with (va)+(vb) equal to 2, are prepared in alkaline aqueous medium wherein transition metal compounds are caused to form adducts with amorphous hydrous alumina, Al(OH)3, said adducts forming crystals when heated, said aluminates being useful, e.g., as ion exchangers and as spinel precursors among other things.
Inventors
- 👤 John M. Lee
- 👤 William C. Bauman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:56
CPC Classifications
B; B01; B01J; B01J41/00; B01J41/08; B01J41/10; C; C01; C01D; C01D15/00; C01F; C01F7/00; C01F7/78; C01F7/784; C01G; C01G3/00; C01G3/006; C01G45/00; C01G45/20; C01G45/22; C01G49/00; C01G49/009; C01G51/00; C01G51/80; C01G51/82; C01G53/00; C01G53/80; C01G53/82; C01G9/00; C01G9/006; C22; C22B; C22B3/00; C22B3/20; C22B3/42; C01P; C01P2002/00; C01P2002/02; C01P2002/30; C01P2002/32; C01P2002/70; C01P2002/77; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
94 words
Crystalline transition metal aluminates conforming generally to the formula MA.sub.a.sup.v Z.sub.b.sup.v.nAl(OH).sub.3.mH.sub.2 O where M is at least one divalent transition metal selected from the group comprising Cu, Zn, Mn, Fe, Co, and Ni, where AZ represents negative valence ions or radicals, n is a value of from 1 to about 4, v is a negative valence of 1, 2, or 3, a and b are each values of from zero to 2, with (va)+(vb) equal to 2, and with m being a value of zero or more, said aluminate being supported on a substrate.
Claim 2
Dependent Claim
94 words
Crystalline transition metal aluminates conforming generally to the formula MA.sub.a.sup.v Z.sub.b.sup.v.nAl(OH).sub.3.mH.sub.2 O where M is at least one divalent transition metal selected from the group comprising Cu, Zn, Mn, Fe, Co, and Ni, where AZ represents negative valence ions or radicals, n is a value of from 1 to about 4, v is a negative valence of 1, 2, or 3, a and b are each values of from zero to 2, with (va)+(vb) equal to 2, and with m being a value of zero or more, said aluminate being supported on a substrate.
Claim 3
Dependent Claim
13 words
The aluminate of claim 1 when supported on or within a reticular substrate.
Claim 4
Dependent Claim
11 words
The aluminate of claim 1 when supported on an inorganic substrate.
Claim 5
Dependent Claim
11 words
The aluminate of claim 1 when supported on an organic substrate.
Claim 6
Dependent Claim
12 words
The aluminate of claim 1 when supported on a metal oxide substrate.
Claim 7
Dependent Claim
11 words
The aluminate of claim 1 when supported on a polymeric substrate.
Claim 8
Dependent Claim
15 words
The aluminate of claim 1 when supported on a polymeric substrate having ion exchange functionalities.
Claim 9
Dependent Claim
14 words
The aluminate of claim 1 when supported on or within a cation exchange resin.
Claim 10
Dependent Claim
14 words
The aluminate of claim 1 when supported on or within an anion exchange resin.
Claim 11
Dependent Claim
15 words
The aluminate of claim 1 when supported on or within a reticular ion exchange resin.
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) | 1987-05-01 | 1987-10-31 | 1988-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-01 | 1991-10-31 | 1992-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-01 | 1995-10-31 | 1996-05-01 | $7700.00 | Window Closed / Lapsed |