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US4349461A
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Group VIIA metal-modified zeolite catalysts
Assignee: Mobil Oil AS
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Filing: 1980-11-14
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Granted: 1982-09-14
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Expires: 2000-11-14
Abstract
Abstract A modified zeolite catalyst useful for the conversion of aromatic compounds to dialkylbenzene compounds rich in the 1,4-dialkylbenzene isomer. The reaction is carried out in the presence of a zeolite catalyst having a silica to alumina mole ratio of at least 12 and a constraint index of about 1-12, said catalyst having been modified by treatment with compounds of manganese and/or rhenium, and optionally phosphorus, to deposit a minor proportion of such elements on the zeolite.
Inventors
- 👤 Chin-Chiun Chu
- 👤 Warren W. Kaeding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:16
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/86; C07C2/862; C07C2/864; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/40; B01J29/48; C07C2/54; C07C2/64; C07C2/66; C07C6/00; C07C6/08; C07C6/12; C07C6/123; C07C6/126; B01J2229/00; B01J2229/10; B01J2229/26; B01J2229/30; B01J2229/42; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/40; C07C2529/65; C07C2529/70
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
60 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 composition further comprising at least 0.25 weight percent of one or more Group VIIA metals deposited thereon in the form of the oxide of such metals.
Claim 2
Dependent Claim
60 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 composition further comprising at least 0.25 weight percent of one or more Group VIIA metals deposited thereon in the form of the oxide of such metals.
Claim 3
Dependent Claim
13 words
The composition of claim 1 wherein said Group VII A metal is manganese.
Claim 4
Dependent Claim
18 words
The composition of claim 2 wherein said manganese comprises between 1 and 15 weight percent of said composition.
Claim 5
Dependent Claim
13 words
The composition of claim 1 wherein said Group VII A metal is rhenium.
Claim 6
Dependent Claim
18 words
The composition of claim 4 wherein said rhenium comprises between 1 and 25 weight percent of said composition.
Claim 7
Dependent Claim
23 words
The composition of claim 1 wherein said composition further comprises at least 0.25 weight percent phosphorus thereon in the form of phosphorus oxide.
Claim 8
Dependent Claim
20 words
The composition of claim 2 further comprising at least 0.25 weight percent phosphorus present in the form of phosphorus oxide.
Claim 9
Dependent Claim
20 words
The composition of claim 4 further comprising at least 0.25 weight percent phosphorus present in the form of phosphorus oxide.
Claim 10
Dependent Claim
32 words
The composition of claim 1, 2, 3, 4, 5, 6, 7 or 8 wherein said crystalline zeolite is chosen from the group consisting of ZSM-5, ZSM-11, ZSM-12, ZSM-23, ZSM-35, ZSM-38 and ZSM-48.
Claim 11
Dependent Claim
10 words
The composition of claim 9 wherein said zeolite is ZSM-5.
Claim 12
Dependent Claim
15 words
The composition of claim 9 wherein said zeolite is contained on a binder matrix therefor.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-09-13 | 1986-03-15 | 1986-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-13 | 1990-03-15 | 1990-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-13 | 1994-03-15 | 1994-09-14 | $7700.00 | Window Closed / Lapsed |