US4647442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crystalline silicophosphoaluminate from a two phase medium
Assignee: Mobil Oil AS
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Filing: 1984-08-21
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Granted: 1987-03-03
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Expires: 2004-08-21
Abstract
Abstract An improved method of synthesis for a composition comprising crystalline silicophosphoaluminate (MCM-2) is provided. The composition has ion-exchange properties and is readily convertible to catalytically active material. The synthesis method requires two liquid phases comprising a suitable organic or inorganic directing agent and specific reactants, including a specific aluminum phosphate of the ALPO-5 structure.
Inventors
- 👤 Eric G. Derouane
- 👤 Roland von Ballmoos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:39
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/373; C07C5/393; C07C5/41; B; B01; B01J; B01J29/00; B01J29/82; B01J29/84; B01J29/85; C01; C01B; C01B37/00; C01B37/06; C01B37/08; C07C1/00; C07C1/20; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2/86; C07C2/862; C07C2/864; C07C2529/00; C07C2529/82; C07C2529/84; C07C2529/85; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52; Y10; Y10S; Y10S423/00; Y10S423/30
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
90 words
A method for preparing an MCM-2 material, said method comprising the steps of: (i) providing a synthesis mixture comprising a liquid organic phase and a liquid aqueous phase, said organic phase comprising an organic solvent immiscible with water and a silicon source soluble in said solvent, said aqueous phase comprising dissolved or partially dissolved AlPO 4 -5 crystalline aluminum phosphate, said synthesis mixture further comprising a tetraethylammonium directing agent; (ii) maintaining said reaction mixture under sufficient crystallization conditions until crystals of said MCM-2 are formed; and (iii) recovering said MCM-2.
Claim 2
Independent Claim
90 words
A method for preparing an MCM-2 material, said method comprising the steps of: (i) providing a synthesis mixture comprising a liquid organic phase and a liquid aqueous phase, said organic phase comprising an organic solvent immiscible with water and a silicon source soluble in said solvent, said aqueous phase comprising dissolved or partially dissolved AlPO 4 -5 crystalline aluminum phosphate, said synthesis mixture further comprising a tetraethylammonium directing agent; (ii) maintaining said reaction mixture under sufficient crystallization conditions until crystals of said MCM-2 are formed; and (iii) recovering said MCM-2.
Claim 3
Dependent Claim
20 words
A method according to claim 1, wherein the organic solvent immiscible with water is a C 5 -C 10 alcohol.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-02 | 1990-09-01 | 1991-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-02 | 1994-09-01 | 1995-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-02 | 1998-09-01 | 1999-03-03 | $7700.00 | Window Closed / Lapsed |