US4431746A
Expired / Lapsed
US
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Preparing metal-exchanged highly siliceous porous crystalline materials
Assignee: Mobil Oil AS
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Filing: 1981-06-26
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Granted: 1984-02-14
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Expires: 2001-06-26
Abstract
Abstract Highly siliceous porous crystalline zeolite materials having a mole ratio of silica to alumina of at least 20 are metal-impregnated by contacting the zeolite with a solution (aqueous or inorganic) of a metal complex having a zero or uncommon low ion charge.
Inventors
- 👤 Louis D. Rollmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:57
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/40; B01J29/48; B01J29/061; B01J29/064; B01J29/072; B01J29/42; B01J29/46; B01J37/00; B01J37/30
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
56 words
A method of preparing a catalyst composition which comprises contacting a porous crystalline siliceous zeolite having a silica-to-alumina mole ratio greater than about 20 with a solution of a transition metal complex of uncommon low charge for a period of time sufficient to exchange a portion of said metal complex with a component of said zeolite.
Claim 2
Independent Claim
56 words
A method of preparing a catalyst composition which comprises contacting a porous crystalline siliceous zeolite having a silica-to-alumina mole ratio greater than about 20 with a solution of a transition metal complex of uncommon low charge for a period of time sufficient to exchange a portion of said metal complex with a component of said zeolite.
Claim 3
Dependent Claim
42 words
The method of claim 1 wherein said metal complex is a complex having a charge of 0 to 1 and said metal is selected from the group consisting of vanadium, manganese, iron, cobalt, nickel, copper, zinc, palladium, platinum, uranium, ruthenium and osmium.
Claim 4
Dependent Claim
41 words
The method of claim 1 wherein said metal complex is a complex having a charge of 0 to 2 and said metal is selected from the group consisting of rhodium, iridium, titanium, zirconium, niobium, molybdenum, tantalum, tungsten, rhenium and the lanthanides.
Claim 5
Dependent Claim
24 words
The method of claim 1 wherein said metal complex contains a ligand selected from the group consisting of carbon monoxide, benzene, phosphine and ammonia.
Claim 6
Dependent Claim
28 words
The method of claim 1 wherein said period of time is sufficient to exchange at least 0.05 percent by weight of metal with a constituent of said zeolite.
Claim 7
Dependent Claim
12 words
The method of claim 1 wherein said solution is an aqueous solution.
Claim 8
Dependent Claim
13 words
The method of claim 1 wherein said solution is an organic solvent solution.
Claim 9
Dependent Claim
28 words
The method of claim 1 wherein said zeolite is selected from the group consisting of Beta, ZSM-4, ZSM-5, ZSM-11, ZSM-12, ZSM-23, ZSM-35, ZSM-38, ZSM-48, mordenite and synthetic faujasite.
Claim 10
Dependent Claim
23 words
The method of claim 1 wherein said solution is an aqueous solution containing a Co(NH 3 ) 4 (CO 3 ) + ion.
Claim 11
Dependent Claim
17 words
The method of claim 1 wherein said solution is an aqueous solution containing a divalent chromium ion.
Claim 12
Dependent Claim
14 words
The method of claim 1 wherein said solution is a non-aqueous solution of ferrocene.
Claim 13
Dependent Claim
15 words
The method of claim 1 wherein said solution is a non-aqueous solution of ferrocinium ion.
Claim 14
Dependent Claim
16 words
The method of claim 1 wherein said solution is a non-aqueous solution of bis (benzene) chromium.
Claim 15
Dependent Claim
32 words
The method of claim 1 wherein said solution is a non-aqueous solution of the singly oxidized derivative of a metal complex selected from the group consisting of ferrocene, and bis (benzene) chromium.
Claim 16
Dependent Claim
18 words
The process of claim 1 wherein said zeolite has a silica to alumina ratio greater than about 1600.
Claim 17
Dependent Claim
14 words
The process of claim 1 wherein said zeolite contains no measurable amount of aluminum.
Claim 18
Dependent Claim
16 words
The process of claim 1 wherein after said step of contacting the resultant product is calcined.
Claim 19
Dependent Claim
26 words
The product prepared by the process of claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, or 17.
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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) | 1987-02-13 | 1987-08-15 | 1988-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-13 | 1991-08-15 | 1992-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-13 | 1995-08-15 | 1996-02-14 | $7700.00 | Window Closed / Lapsed |