US4483937A
Expired / Lapsed
US
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Modified zeolite catalyst composition for alkylating toluene with methanol to form styrene
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1983-04-22
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Granted: 1984-11-20
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Expires: 2003-04-22
Abstract
Abstract A modified zeolite catalyst composition and process for using the catalyst composition to alkylate toluene (or derivative thereof) with methanol to form e.g. styrene and ethylbenzene (or derivatives thereof) is disclosed. The catalyst composition is exemplified by a type X- or Y-zeolite modified with (1) at least one alkali metal selected from Cs, K, and Rb; (2) at least one metal selected from Li, Ce, Cr, and Ag; and (3) boron and/or phosphorus.
Inventors
- 👤 Huei-Cheng Liu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:15
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/86; C07C2/862; C07C2/864; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/08; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/08; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
93 words
A composition capable of catalyzing the side chain alkylation of toluene with methanol comprising a crystalline aluminosilicate zeolite of the faujasite structure with a SiO 2 :Al 2 O 3 mole ratio of from about 2 to about 8 and having present therein (1) at least one alkali metal selected from the group consisting of Cs, K, and Rb; (2) at least one metal selected from the Group of M metals consisting of Li, Ce, Cr, and Ag; and (3) at least one member selected from the group consisting of boron and phosphorus.
Claim 2
Dependent Claim
93 words
A composition capable of catalyzing the side chain alkylation of toluene with methanol comprising a crystalline aluminosilicate zeolite of the faujasite structure with a SiO 2 :Al 2 O 3 mole ratio of from about 2 to about 8 and having present therein (1) at least one alkali metal selected from the group consisting of Cs, K, and Rb; (2) at least one metal selected from the Group of M metals consisting of Li, Ce, Cr, and Ag; and (3) at least one member selected from the group consisting of boron and phosphorus.
Claim 3
Dependent Claim
20 words
The composition of claim 1 wherein the alkali metal and Group M metal are present as cations within said zeolite.
Claim 4
Dependent Claim
16 words
The composition of claim 2 wherein the boron is present within said zeolite as a cation.
Claim 5
Dependent Claim
12 words
The composition of claim 2 wherein said zeolite has cesium present therein.
Claim 6
Dependent Claim
14 words
The composition of claim 4 wherein said zeolite has boron and phosphorus present therein.
Claim 7
Dependent Claim
12 words
The composition of claim 4 wherein lithium is present in said zeolite.
Claim 8
Dependent Claim
12 words
The composition of claim 4 wherein cerium is present in said zeolite.
Claim 9
Dependent Claim
12 words
The composition of claim 4 wherein chromium is present in said zeolite.
Claim 10
Dependent Claim
12 words
The composition of claim 4 wherein silver is present in said zeolite.
Claim 11
Dependent Claim
40 words
The composition of claim 4 wherein the zeolite is of the X- or Y-type having a cesium content of from about 10 to about 30% by weight on an elemental basis, based on the total weight of the catalyst composition.
Claim 12
Dependent Claim
37 words
The composition of claim 10 wherein the Group M metal is present in said zeolite in an amount sufficient to provide therein a gram atom ratio of cesium:Group M metal of from about 1:1 to about 100:1.
Claim 13
Dependent Claim
12 words
The composition of claim 11 wherein the zeolite is of the X-type.
Claim 14
Dependent Claim
44 words
The composition of claim 11 wherein boron and phosphorus are present in said zeolite in an amount of from about 0.001 to about 4% by weight of each of said components on an elemental basis, based on the total weight of the catalyst composition.
Claim 15
Dependent Claim
34 words
The composition of claim 12 wherein the sodium content of the zeolite is from about 0.5 to about 4.5% by weight on an elemental basis, based on the total weight of the catalyst composition.
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) | 1987-11-20 | 1988-05-21 | 1988-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-20 | 1992-05-21 | 1992-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-20 | 1996-05-21 | 1996-11-20 | $7700.00 | Window Closed / Lapsed |