US4044065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion utilizing a phosphorus-containing zeolite catalyst
Assignee: SPENCER WRIGHT INDUSTRIES Inc A CORP OF TENNESSEE
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Filing: 1975-12-08
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Granted: 1977-08-23
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Expires: 1995-12-08
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
2026-10-28 16:10
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; C07C2/00; 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
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
65 words
A process for the conversion of an aliphatic hydrocarbon comprising contacting the same with a catalyst comprising a crystalline aluminosilicate zeolite containing hydrogen ions, having a silica to alumina ratio of at least about 12 and 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
65 words
A process for the conversion of an aliphatic hydrocarbon comprising contacting the same with a catalyst comprising a crystalline aluminosilicate zeolite containing hydrogen ions, having a silica to alumina ratio of at least about 12 and 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
22 words
The process of claim 1 wherein said zeolite has combined therewith between about 0.78 and about 4.5 percent by weight of phosphorus.
Claim 4
Dependent Claim
24 words
The process of claim 1 wherein said aliphatic hydrocarbon is contacted with said catalyst at a temperaure of about 250° C. to 700° C.
Claim 5
Dependent Claim
26 words
The process of claim 1 wherein said aliphatic hydrocarbon is contacted with said catalyst at a weight per hour space velocity between about 1:5 and 13.5.
Claim 6
Dependent Claim
12 words
The process of claim 1 wherein said aliphatic hydrocarbon is an olefin.
Claim 7
Dependent Claim
28 words
The process of claim 5 wherein said olefin is ethylene and said ethylene is contacted with said catalyst at a temperature of about 500° C. to 700° C.
Claim 8
Dependent Claim
28 words
The process of claim 1 wherein said olefin is propylene and said propylene is contacted with said catalyst at a temperature of about 300° C. to 700° C.
Claim 9
Dependent Claim
12 words
The process of claim 1 wherein said aliphatic hydrocarbon is a paraffin.
Claim 10
Dependent Claim
10 words
The process of claim 8 wherein said paraffin is n-hexane.
Claim 11
Dependent Claim
12 words
The process of claim 8 wherein said paraffin is a light naphtha.
Claim 12
Dependent Claim
10 words
The process of claim 1 wherein said zeolite is ZSM-5.
Claim 13
Dependent Claim
10 words
The process of claim 1 wherein said zeolite is ZSM-11.
Claim 14
Dependent Claim
10 words
The process of claim 1 wherein said zeolite is ZSM-12.
Claim 15
Dependent Claim
10 words
The process of claim 1 wherein said zeolite is ZSM-21.
Claim 16
Dependent Claim
11 words
The process of claim 1 wherein said zeolite is TEA mordenite.
Claim 17
Dependent Claim
12 words
The process of claim 1 wherein said catalyst is impregnated with zinc.
Claim 18
Dependent Claim
18 words
The process of claim 16 wherein the amount of zinc is at least about 1 percent by weight.
Claim 19
Dependent Claim
18 words
The process of claim 17 wherein the amount of zinc is about 1 to 4 percent by weight.
Claim 20
Dependent Claim
21 words
The process of claim 1 wherein said phosphorus compound has a covalent or ionic constituent capable of reacting with hydrogen ion.
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) | 1980-08-22 | 1981-02-21 | 1981-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-22 | 1985-02-21 | 1985-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-22 | 1989-02-21 | 1989-08-23 | $7700.00 | Window Closed / Lapsed |