US4391739A
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Zeolite catalysts modified with group IA metals
Assignee: Mobil Oil AS
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Filing: 1982-01-18
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Granted: 1983-07-05
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Expires: 2002-01-18
Abstract
Abstract A zeolite catalyst composition suitable for para-selective conversion of substituted aromatic compounds, e.g., to dialkylbenzene compounds rich in the 1,4-dialkylbenzene isomer. Such a composition comprises a zeolite catalyst having a silica to alumina mole ratio of at least 12 and a constraint index of about 1-12, and a minor amount, e.g., at least at 0.25 weight percent of one or more of the alkali metals (e.g., Li, Na, K, Cs) and optionally phosphorus, said alkali metals and phosphorus being present in the catalyst at least in part in the form of their oxides.
Inventors
- 👤 Chin-Chiun Chu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:26
CPC Classifications
C; C07; C07C; C07C6/00; C07C6/08; C07C6/12; C07C6/126; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/40; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2/86; C07C2/862; C07C2/864; C07C6/123; B01J2229/00; B01J2229/10; B01J2229/26; B01J2229/30; B01J2229/42; B01J29/65; B01J29/70; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/40; C07C2529/65; C07C2529/70; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52; Y02P30/00; Y02P30/20; Y02P30/40
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
83 words
A catalyst composition comprising: a crystalline zeolite material characterized by a Constraint Index of within the approximate range of 1 to 12 and a silica to alumina mole ratio of at least 12; said catalyst composition further comprising at least 0.25 weight percent of one or more Group IA metals incorporated into said composition in the form of a Group IA metal oxide and at least 0.25 weight percent of phosphorus incorporated into said composition in the form of an oxide of phosphorus.
Claim 2
Dependent Claim
83 words
A catalyst composition comprising: a crystalline zeolite material characterized by a Constraint Index of within the approximate range of 1 to 12 and a silica to alumina mole ratio of at least 12; said catalyst composition further comprising at least 0.25 weight percent of one or more Group IA metals incorporated into said composition in the form of a Group IA metal oxide and at least 0.25 weight percent of phosphorus incorporated into said composition in the form of an oxide of phosphorus.
Claim 3
Dependent Claim
75 words
A catalyst composition comprising: a crystalline zeolite material selected from ZSM-5, ZSM-11, ZSM-12, ZSM-23, ZSM-35, ZSM-38 and ZSM-48; said catalyst composition further comprising at least 0.25 weight percent of one or more Group IA metals selected from lithium, potassium, sodium and cesium incorporated into said composition in the form of a Group IA metal oxide and at least 0.25 weight percent of phosphorus incorporated into said composition in the form of an oxide of phosphorus.
Claim 4
Dependent Claim
75 words
A catalyst composition comprising: a crystalline zeolite material selected from ZSM-5, ZSM-11, ZSM-12, ZSM-23, ZSM-35, ZSM-38 and ZSM-48; said catalyst composition further comprising at least 0.25 weight percent of one or more Group IA metals selected from lithium, potassium, sodium and cesium incorporated into said composition in the form of a Group IA metal oxide and at least 0.25 weight percent of phosphorus incorporated into said composition in the form of an oxide of phosphorus.
Claim 5
Dependent Claim
12 words
The composition of claim 2 wherein said Group IA metal is lithium.
Claim 6
Dependent Claim
18 words
The composition of claim 3 wherein said lithium comprises between 1 and 15 weight percent of said composition.
Claim 7
Dependent Claim
12 words
The composition of claim 2 wherein said Group IA metal is potassium.
Claim 8
Dependent Claim
18 words
The composition of claim 5 wherein said potassium comprises between 1 and 20 weight percent of said composition.
Claim 9
Dependent Claim
12 words
The composition of claim 2 wherein said Group IA metal is sodium.
Claim 10
Dependent Claim
60 words
A catalyst composition comprising: a crystalline zeolite material selected from ZSM-5, ZSM-11, ZSM-12, ZSM-23, ZSM-35, ZSM-38 and ZSM-48; said catalyst composition further comprising at least 0.25 weight percent of sodium incorporated into said composition in the form of sodium oxide and at least 0.25 weight percent of phosphorus incorporated into said composition in the form of an oxide of phosphorus.
Claim 11
Dependent Claim
60 words
A catalyst composition comprising: a crystalline zeolite material selected from ZSM-5, ZSM-11, ZSM-12, ZSM-23, ZSM-35, ZSM-38 and ZSM-48; said catalyst composition further comprising at least 0.25 weight percent of sodium incorporated into said composition in the form of sodium oxide and at least 0.25 weight percent of phosphorus incorporated into said composition in the form of an oxide of phosphorus.
Claim 12
Dependent Claim
25 words
The composition of claim 2, 3, 4, 5, 6, 7 or 8 wherein said zeolite is selected from the group consisting of ZSM-5 and ZSM-11.
Claim 13
Dependent Claim
10 words
The composition of claim 9 wherein said zeolite is ZSM-5.
Claim 14
Dependent Claim
14 words
The composition of claim 9 wherein said zeolite is admixed with a binder therefor.
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) | 1986-07-04 | 1987-01-03 | 1987-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-04 | 1991-01-03 | 1991-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-04 | 1995-01-03 | 1995-07-05 | $7700.00 | Window Closed / Lapsed |