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US4128504A
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Stabilized zinc-containing zeolites
Assignee: Mobil Oil AS
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Filing: 1975-02-21
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Granted: 1978-12-05
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Expires: 1995-02-21
Abstract
Abstract Crystalline aluminosilicate catalysts, especially those containing zinc, are stabilized with respect to elution of the zinc by adding thereto another metal of Group IB or Group VIII (e.g. copper or nickel). Germanium, rhenium and the rare earth metals may also be added.
Inventors
- 👤 Charles J. Plank
- 👤 Edward J. Rosinski
- 👤 Edwin N. Givens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:09
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/40; B01J29/42; B01J29/46; B01J29/405; B01J29/44; C; C07; C07C; C07C2/00; B01J2229/00; B01J2229/10; B01J2229/26; B01J2229/30; B01J2229/36; B01J2229/42; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/40
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
69 words
A method for preventing elution of zinc from a zinc-containing zeolite catalyst by incorporating therein an elution preventing amount of another metal selected from the group consisting of metals of Group IB or VIII of the Periodic Table, germanium, rhenium and rare earth metals, the zeolite used having a silica to alumina ratio of at least about 12 and a constraint index of from about 1 to about 12.
Claim 2
Independent Claim
69 words
A method for preventing elution of zinc from a zinc-containing zeolite catalyst by incorporating therein an elution preventing amount of another metal selected from the group consisting of metals of Group IB or VIII of the Periodic Table, germanium, rhenium and rare earth metals, the zeolite used having a silica to alumina ratio of at least about 12 and a constraint index of from about 1 to about 12.
Claim 3
Dependent Claim
29 words
The method of claim 1 wherein zinc and the other metal may be present in a range from about 0.1 percent by weight to about 10 percent by weight.
Claim 4
Dependent Claim
18 words
The method of claim 2 wherein said range is from about 0.2 to about 7 percent by weight.
Claim 5
Dependent Claim
39 words
The method of claim 2 wherein the zinc is present at a concentration of from 0.1 percent by weight to about 5 percent by weight and the other metal from about 0.1 percent to about 2 percent by weight.
Claim 6
Dependent Claim
11 words
The method of claim 1 wherein the other metal is copper.
Claim 7
Dependent Claim
11 words
The method of claim 1 wherein the other metal is silver.
Claim 8
Dependent Claim
11 words
The method of claim 1 wherein the other metal is gold.
Claim 9
Dependent Claim
11 words
The method of claim 1 wherein the other metal is platinum.
Claim 10
Dependent Claim
11 words
The method of claim 1 wherein the other metal is nickel.
Claim 11
Dependent Claim
11 words
The method of claim 1 wherein the other metal is germanium.
Claim 12
Dependent Claim
11 words
The method of claim 1 wherein the other metal is rhenium.
Claim 13
Dependent Claim
11 words
The method of claim 1 wherein the zeolite used is ZSM-5.
Claim 14
Dependent Claim
11 words
The method of claim 1 wherein the zeolite used is ZSM-11.
Claim 15
Dependent Claim
11 words
The method of claim 1 wherein the final zeolite is CuZnHZSM-5.
Claim 16
Dependent Claim
76 words
A zeolite catalyst comprising of a zeolite characterized by having a silica to alumina mole ratio of at least 12 and a constraint index of from about 1 to about 12 and containing from about 0.1% to about 5% by weight of zinc and from about 0.1% to about 2% by weight of another metal selected from a group of metals of Groups IB and VIII of the Periodic Table, germanium, rhenium and rare earth metals.
Claim 17
Dependent Claim
76 words
A zeolite catalyst comprising of a zeolite characterized by having a silica to alumina mole ratio of at least 12 and a constraint index of from about 1 to about 12 and containing from about 0.1% to about 5% by weight of zinc and from about 0.1% to about 2% by weight of another metal selected from a group of metals of Groups IB and VIII of the Periodic Table, germanium, rhenium and rare earth metals.
Claim 18
Dependent Claim
11 words
The catalyst of claim 15 wherein the zeolite used is ZSM-5.
Claim 19
Dependent Claim
11 words
The catalyst of claim 15 wherein the zeolite used is ZSM-11.
Claim 20
Dependent Claim
11 words
The catalyst of claim 15 wherein the final zeolite is CuZnHZSM-5.
Claim 21
Dependent Claim
11 words
The catalyst of claim 15 wherein the other metal is silver.
Claim 22
Dependent Claim
11 words
The catalyst of claim 15 wherein the other metal is gold.
Claim 23
Dependent Claim
11 words
The catalyst of claim 15 wherein the other metal is platinum.
Claim 24
Dependent Claim
11 words
The catalyst of claim 15 wherein the other metal is nickel.
Claim 25
Dependent Claim
11 words
The catalyst of claim 15 wherein the other metal is germanium.
Claim 26
Dependent Claim
11 words
The catalyst of claim 15 wherein the other metal is rhenium.
References Cited (Backward Citations)
US3700585A
Cited
US3702886A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-04 | 1982-06-05 | 1982-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-04 | 1986-06-05 | 1986-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-04 | 1990-06-05 | 1990-12-05 | $7700.00 | Window Closed / Lapsed |