US4335020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparation of composite zeolite catalysts
Assignee: Mobil Oil AS
•
Filing: 1981-01-06
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Granted: 1982-06-15
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Expires: 2001-01-06
Abstract
Abstract A method of removing the organic cation from an organic cation-containing zeolite which comprises contacting the zeolite at low temperatures with an aqueous solution of a compound of a class of chemical treating agents that will improve the dispersive and catalytic properties of the zeolite.
Inventors
- 👤 Pochen Chu
- 👤 Francis G. Dwyer
- 👤 Albin Huss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:40
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/06; B01J29/00; B01J29/04; B01J29/06; B01J29/40; B01J2229/00; B01J2229/10; B01J2229/26; B01J2229/30; B01J2229/42; B01J29/65; B01J29/70
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
71 words
A method of removing organic species from an organic cation-containing zeolite to improve the dispersive properties thereof, in turn, resulting in catalysts of enhanced catalytic and physical properties which comprises contacting said zeolite with a solution of a compound having a standard oxidation potential of at least 0.25 volt for a period of time sufficient to effect oxidation of said organic cation, said contact being conducted at temperatures below 100° F.
Claim 2
Independent Claim
71 words
A method of removing organic species from an organic cation-containing zeolite to improve the dispersive properties thereof, in turn, resulting in catalysts of enhanced catalytic and physical properties which comprises contacting said zeolite with a solution of a compound having a standard oxidation potential of at least 0.25 volt for a period of time sufficient to effect oxidation of said organic cation, said contact being conducted at temperatures below 100° F.
Claim 3
Dependent Claim
19 words
A method according to claim 1 wherein the compound has an oxidation potential of between 0.5 and 2.00 volt.
Claim 4
Dependent Claim
14 words
A method according to claim 2 wherein the organic cation is a tetraalkylammonium cation.
Claim 5
Dependent Claim
12 words
A method according to claim 3 wherein said tetraalkylammonium cation is tetramethylammonium.
Claim 6
Dependent Claim
12 words
A method according to claim 3 wherein said tetraalkylammonium cation is tetraethylammonium.
Claim 7
Dependent Claim
12 words
A method according to claim 3 wherein said tetraalkylammonium cation is tetrapropylammonium.
Claim 8
Dependent Claim
12 words
A method according to claim 3 wherein said tetraalkylammonium cation is tetrabutylammonium.
Claim 9
Dependent Claim
55 words
A method according to claim 2 wherein said organic cation has the formula R 4 X wherein X is an element of Group V-A of the Periodic Table and R is hydrogen, an alkyl group having 1 to 5 carbon atoms or an aryl group, at least one such R group being aryl or alkyl.
Claim 10
Dependent Claim
10 words
A method according to claim 8 wherein X is nitrogen.
Claim 11
Dependent Claim
10 words
A method according to claim 8 wherein X is phosphorus.
Claim 12
Dependent Claim
12 words
A method according to claim 1 wherein said compound is a hypochlorite.
Claim 13
Dependent Claim
12 words
A method according to claim 1 wherein said compound is a permanganate.
Claim 14
Dependent Claim
12 words
A method according to claim 1 wherein said compound is a dichromate.
Claim 15
Dependent Claim
12 words
A method according to claim 1 wherein said compound is hydrogen peroxide.
Claim 16
Dependent Claim
11 words
A method according to claim 2 wherein said compound is chlorate.
Claim 17
Dependent Claim
11 words
A method according to claim 2 wherein said zeolite is ZSM-5.
Claim 18
Dependent Claim
11 words
A method according to claim 2 wherein said zeolite is ZSM-11.
Claim 19
Dependent Claim
11 words
A method according to claim 2 wherein said zeolite is ZSM-12.
Claim 20
Dependent Claim
11 words
A method according to claim 2 wherein said zeolite is ZSM-21.
Claim 21
Dependent Claim
11 words
A method according to claim 2 wherein said zeolite is ZSM-23.
Claim 22
Dependent Claim
11 words
A method according to claim 2 wherein said zeolite is ZSM-35.
Claim 23
Dependent Claim
11 words
A method according to claim 2 wherein said zeolite is ZSM-38.
Claim 24
Dependent Claim
16 words
A method according to claim 1 wherein said temperatures are between about 50° and 100° F.
References Cited (Backward Citations)
US3766093A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-14 | 1985-12-14 | 1986-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-14 | 1989-12-14 | 1990-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-14 | 1993-12-14 | 1994-06-15 | $7700.00 | Window Closed / Lapsed |