US3716596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylation and dealkylation of aromatics in the presence of crystalline aluminosilicates
Assignee: Mobil Oil AS
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Filing: 1968-04-18
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Granted: 1973-02-13
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Expires: 1988-04-18
Abstract
Abstract A process for alkylating or dealkylating a compound capable of alkylation or dealkylation by contacting it in a reaction zone maintained under conditions effective for accomplishing said alkylation or dealkylation with a catalyst comprising a crystalline zeolite characterized by a unique X-ray diffraction pattern or products of thermal treatment of the zeolite. The zeolite can be further defined by reference to the following formula expressed in terms of mole ratios of oxides: WHEREIN M is a cation, J is aluminum or gallium and Z is silicon or germanium and n is the valence of M.
Inventors
- 👤 E Bowes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:22
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/64; C07C2/66; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/70; B01J29/7011; C07C4/00; C07C4/08; C07C4/12; C07C4/14; C07C4/18; B01J2229/00; B01J2229/10; B01J2229/26; B01J2229/30; B01J2229/42; C07C2521/00; C07C2521/02; C07C2521/04; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/70
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
69 words
A process for alkylating benzene which comprises contacting the same with ethylene at atmospheric pressure and a temperature of approximately 350* F. in the presence of a catalyst consisting essentially of a crystalline aluminosilicate zeolite characterized by the X-ray diffraction lines of Table 1 and a composition, expressed in terms of mole ratios of oxides as follows: wherein M is predominately hydrogen and n is the valence of M.
Claim 2
Dependent Claim
69 words
A process for alkylating benzene which comprises contacting the same with ethylene at atmospheric pressure and a temperature of approximately 350* F. in the presence of a catalyst consisting essentially of a crystalline aluminosilicate zeolite characterized by the X-ray diffraction lines of Table 1 and a composition, expressed in terms of mole ratios of oxides as follows: wherein M is predominately hydrogen and n is the valence of M.
Claim 3
Dependent Claim
22 words
A process according to claim 1 wherein said catalyst is HZSM-4 characterized by a silica/alumina mole ratio between about 5 and 15.
Claim 4
Dependent Claim
18 words
A process according to claim 1 wherein said catalyst is employed in combination with a support or binder.
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) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |