US4059679A
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Modified zirconium phosphates
Assignee: Ohio University
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Filing: 1974-08-05
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Granted: 1977-11-22
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Expires: 1994-08-05
Abstract
Abstract A process for modifying various inorganic compounds defined by the formula:
Inventors
- 👤 Abraham Clearfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:25
CPC Classifications
G; G21; G21F; G21F9/00; G21F9/04; G21F9/06; G21F9/12; B; B01; B01D; B01D53/00; B01D53/34; B01D53/92; B01D53/94; B01D53/944; B01J; B01J27/00; B01J27/14; B01J27/16; B01J29/00; B01J29/82; B01J39/00; B01J39/08; B01J39/12; C; C01; C01B; C01B17/00; C01B17/69; C01B17/74; C01B17/76; C01B17/78; C01B25/00; C01B25/16; C01B25/26; C01B25/45; C01B33/00; C01B33/20; C01G; C01G1/00; C01G28/00; C01G28/007; C01G30/00; G21F9/007
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
106 words
A process for modifying the interlayer spacing of a crystalline zirconium phosphate hydrate, containing replaceable hydrogen ions, to produce a compound especially suitable for use as a catalyst, comprising the steps of reacting said phosphate with an alkali metal salt or hydroxide for a time sufficient for at least part of the hydrogen ions thereof to be replaced by said alkali metal, elevating the temperature of said cation-containing phosphate to at least partially dehydrate said alkali metal containing zirconium phosphate, and thereafter replacing said alkali metal with a dissimilar metal selected from the groups IB, IIA, IIIB, VIIB, and VIII of the periodic table of elements.
Claim 2
Dependent Claim
106 words
A process for modifying the interlayer spacing of a crystalline zirconium phosphate hydrate, containing replaceable hydrogen ions, to produce a compound especially suitable for use as a catalyst, comprising the steps of reacting said phosphate with an alkali metal salt or hydroxide for a time sufficient for at least part of the hydrogen ions thereof to be replaced by said alkali metal, elevating the temperature of said cation-containing phosphate to at least partially dehydrate said alkali metal containing zirconium phosphate, and thereafter replacing said alkali metal with a dissimilar metal selected from the groups IB, IIA, IIIB, VIIB, and VIII of the periodic table of elements.
Claim 3
Dependent Claim
17 words
A process in accordance with claim 1 wherein said dissimilar cation is selected from manganese and copper.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-11-21 | 1981-05-23 | 1981-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-21 | 1985-05-23 | 1985-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-21 | 1989-05-23 | 1989-11-22 | $7700.00 | Window Closed / Lapsed |