US3972832A
Expired / Lapsed
US
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Phosphorus-containing zeolite catalyst
Assignee: Mobil Oil AS
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Filing: 1974-09-23
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Granted: 1976-08-03
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Expires: 1994-09-23
Abstract
Abstract This specification discloses, as a composition of matter, a phosphorus-containing zeolite and discloses a method for preparing it. The composition is a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least about 12, a constraint index of about 1 to 12, and containing phosphorus incorporated with the crystal structure thereof in an amount of at least about 0.78 percent by weight. The specification also discloses the use of the composition as a catalyst for the conversion of aliphatic compounds.
Inventors
- 👤 Stephen A. Butter
- 👤 Warren W. Kaeding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:19
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/095; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/40; B01J29/405; B01J37/00; B01J37/28; C07; C07C; C07C1/00; C07C1/20; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/12; C07C2/54; C07C2/64; C07C2/66; C07C2/86; C07C2/861; C07C2/862; C07C2/864; C07C2/865; C07C2/868; C07C4/00; C07C4/02; C07C4/06; C07C6/00; C07C6/02; C07C6/04; B01J29/18; B01J29/65; B01J29/70; B01J29/82; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/18; C07C2529/40; C07C2529/65; C07C2529/70; C10G2400/00; C10G2400/20; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
52 words
A composition of matter comprising a crystalline aluminosilicate zeolite containing hydrogen ions, having a silica to alumina ratio of at least about 12, a constraint index of about 1 to 12, said zeolite having been contacted with a phosphorus compound to combine therewith at least about 0.78 percent by weight of phosphorus.
Claim 2
Dependent Claim
52 words
A composition of matter comprising a crystalline aluminosilicate zeolite containing hydrogen ions, having a silica to alumina ratio of at least about 12, a constraint index of about 1 to 12, said zeolite having been contacted with a phosphorus compound to combine therewith at least about 0.78 percent by weight of phosphorus.
Claim 3
Dependent Claim
18 words
The composition of claim 1 wherein the amount of phosphorus is about 0.78 to 4.5 percent by weight.
Claim 4
Dependent Claim
18 words
The composition of claim 1 wherein the amount of phosphorus is at least about 2.5 percent by weight.
Claim 5
Dependent Claim
16 words
The composition of claim 1 wherein the silica to alumina ratio is at least about 30.
Claim 6
Dependent Claim
10 words
The composition of claim 1 wherein said zeolite is ZSM-5.
Claim 7
Dependent Claim
10 words
The composition of claim 1 wherein said zeolite is ZSM-11.
Claim 8
Dependent Claim
10 words
The composition of claim 1 wherein said zeolite is ZSM-12.
Claim 9
Dependent Claim
10 words
The composition of claim 1 wherein said zeolite is ZSM-21.
Claim 10
Dependent Claim
11 words
The composition of claim 1 wherein said zeolite is TEA mordenite.
Claim 11
Dependent Claim
23 words
The composition of claim 1 wherein said zeolite has a dried crystal density of not less than about 1.6 grams per cubic centimeter.
Claim 12
Dependent Claim
8 words
The composition of claim 1 impregnated with zinc.
Claim 13
Dependent Claim
18 words
The composition of claim 11 wherein the amount of zinc is at least about 1 percent by weight.
Claim 14
Dependent Claim
18 words
The composition of claim 12 wherein the amount of zinc is about 1 to 4 percent by weight.
Claim 15
Dependent Claim
53 words
The process for preparing a phosphorus-containing zeolite which comprises contacting a zeolite containing hydrogen ions with a phosphorus-containing compound and thereafter heating, wherein said zeolite containing hydrogen ions is a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least about 12 and a constraint index of about 1 to 12.
Claim 16
Dependent Claim
53 words
The process for preparing a phosphorus-containing zeolite which comprises contacting a zeolite containing hydrogen ions with a phosphorus-containing compound and thereafter heating, wherein said zeolite containing hydrogen ions is a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least about 12 and a constraint index of about 1 to 12.
Claim 17
Dependent Claim
10 words
The process of claim 14 wherein said zeolite is ZSM-5.
Claim 18
Dependent Claim
10 words
The process of claim 14 wherein said zeolite is ZSM-11.
Claim 19
Dependent Claim
10 words
The process of claim 14 wherein said zeolite is ZSM-12.
Claim 20
Dependent Claim
10 words
The process of claim 14 wherein said zeolite is ZSM-21.
Claim 21
Dependent Claim
11 words
The process of claim 14 wherein said zeolite is TEA mordenite.
Claim 22
Dependent Claim
23 words
The process of claim 14 wherein said zeolite has a dried crystal density of not less than about 1.6 grams per cubic centimeter.
Claim 23
Dependent Claim
11 words
The process of claim 14 wherein said phosphorus-containing compound is trimethylphosphite.
Claim 24
Dependent Claim
12 words
The process of claim 14 wherein said phosphorus-containing compound is phosphorus trichloride.
Claim 25
Dependent Claim
15 words
The process of claim 14 wherein said phosphorus-containing compound is in solution in a solvent.
Claim 26
Dependent Claim
10 words
The process of claim 14 wherein said solvent is n-hexane.
Claim 27
Dependent Claim
19 words
The process of claim 14 wherein said heating is effected at temperatures of about 150° C to 500° C.
Claim 28
Dependent Claim
15 words
The process of claim 14 wherein said heating is effected in the presence of oxygen.
Claim 29
Dependent Claim
24 words
The process of claim 14 wherein said zeolite is contacted with water vapor subsequent to contact with said phosphorus-containing compound and prior to heating.
Claim 30
Dependent Claim
21 words
The process of claim 14 wherein, subsequent to contacting said zeolite with said phosphorus-containing compound, said zeolite is impregnated with zinc.
Claim 31
Dependent Claim
22 words
The process of claim 14 wherein said zeolite is impregnated with said zinc by contacting with a solution of a zinc salt.
Claim 32
Dependent Claim
13 words
The process of claim 29 wherein said zinc salt is an organic salt.
Claim 33
Dependent Claim
13 words
The process of claim 29 wherein said zinc salt is an inorganic salt.
Claim 34
Dependent Claim
12 words
The process of claim 31 wherein said zinc salt is zinc nitrate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-03 | 1980-02-02 | 1980-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-03 | 1984-02-02 | 1984-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-03 | 1988-02-02 | 1988-08-03 | $7700.00 | Window Closed / Lapsed |