US4094922A
Expired / Lapsed
US
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Alkylation of aromatics using amphora shaped catalysts
Assignee: Standard Oil Co
•
Filing: 1977-02-24
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Granted: 1978-06-13
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Expires: 1997-02-24
Abstract
Abstract Catalysts having a substantially spherical shape, a void center and a hole in the external surface communicating to the void center have been found to be especially effective in the alkylation of aromatic hydrocarbons.
Inventors
- 👤 Joseph P. Bartek
- 👤 Robert K. Grasselli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:34
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2/68; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/18; B01J35/00; B01J35/50; B01J37/00; B01J37/0009; C07C2/70; C07C2521/00; C07C2521/02; C07C2521/04; C07C2521/06; C07C2521/08; C07C2521/12; C07C2523/00; C07C2523/02; C07C2527/00; C07C2527/14; C07C2527/16; C07C2527/167; C07C2527/173
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
52 words
In a process for the alkylation of an aromatic hydrocarbon wherein the aromatic hydrocarbon is contacted with an alkylating agent in the presence of a fixed-bed acid catalyst at an elevated temperature, the improvement wherein at least a part of said catalyst has the amphora shape and a diameter of 1-10 mm.
Claim 2
Dependent Claim
52 words
In a process for the alkylation of an aromatic hydrocarbon wherein the aromatic hydrocarbon is contacted with an alkylating agent in the presence of a fixed-bed acid catalyst at an elevated temperature, the improvement wherein at least a part of said catalyst has the amphora shape and a diameter of 1-10 mm.
Claim 3
Dependent Claim
13 words
The process of claim 1 wherein the amphora catalyst is a zeolite catalyst.
Claim 4
Dependent Claim
13 words
A process of claim 1 wherein the amphora catalyst is an amorphous silica-alumina.
Claim 5
Dependent Claim
60 words
The process in claim 1 wherein the amphora catalyst is phosphoric acid, a heteropolyacid, an isopolyacid or an acidic salt supported on SiO 2 , SiO 2 --Al 2 O 3 , Al 2 O 3 , AlPO 4 , BPO 4 , CaAl 2 O 4 , TiO 2 , ZrO 2 , montmorillonite, kieselguhr or other suitable carrier.
Claim 6
Dependent Claim
22 words
A process in claim 1 wherein the amphora catalyst is a Lewis acid such as aluminum chloride supported on a suitable carrier.
Claim 7
Dependent Claim
11 words
The process of claim 1 wherein the aromatic hydrocarbon is benzene.
Claim 8
Dependent Claim
12 words
The process of claim 1 wherein the alkylating agent is an olefin.
Claim 9
Dependent Claim
11 words
The process of claim 1 wherein benzene is alkylated with ethylene.
Claim 10
Dependent Claim
11 words
The process in claim 1 wherein benzene is alkylated with propylene.
Claim 11
Dependent Claim
16 words
The process of claim 1 wherein more than 25% of the catalyst is the amphora catalyst.
Claim 12
Dependent Claim
15 words
The process of claim 1 wherein essentially all of the catalyst is the amphora catalyst.
References Cited (Backward Citations)
US3347798A
Cited
US3798176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-12 | 1981-12-12 | 1982-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-12 | 1985-12-12 | 1986-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-12 | 1989-12-12 | 1990-06-13 | $7700.00 | Window Closed / Lapsed |