Patent US4175057A successfully refreshed from Google Patents.
US4175057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zeolite composition
Assignee: BP PLC
•
Filing: 1977-12-02
•
Granted: 1979-11-20
•
Expires: 1997-12-02
Abstract
Abstract This case relates to a process for producing aromatics by contacting a C 3 -C 8 hydrocarbon with a gallium catalyst supported on an aluminosilicate in which the ratio of silica to alumina is between 20:1 and 70:1.
Inventors
- 👤 Evan E. Davies
- 👤 Alexander J. Kolombos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:17
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/061; B01J29/40; B01J29/405; B01J29/70; B01J29/7049; B01J29/7057; B01J29/7084; C; C07; C07C; C07C2/00; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/095; C07C2523/00; C07C2523/08; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/40; C07C2529/65; C07C2529/70
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
37 words
A zeolite composition comprising an aluminosilicate having a molar ratio of silica to alumina between about 20:1 and 70:1 in which cations have been exchanged with gallium ions or on which a gallium compound has been deposited.
Claim 2
Dependent Claim
37 words
A zeolite composition comprising an aluminosilicate having a molar ratio of silica to alumina between about 20:1 and 70:1 in which cations have been exchanged with gallium ions or on which a gallium compound has been deposited.
Claim 3
Dependent Claim
23 words
A zeolite composition as defined in claim 1 wherein said gallium compound is a compound which gives rise to gallium oxide on activation.
Claim 4
Dependent Claim
77 words
A zeolite composition according to claim 1 wherein the aluminosilicate is selected from zeolite-β and a zeolite of the general formula: M.sub.2/n O.W.sub.2 O.sub.3.yYO.sub.2.zH.sub.2 O wherein M is a cation which is a positively charged ion selected from a metal ion, an organic ion and a proton of valence n, W is aluminium, gallium or mixtures thereof, Y is silicon or germanium, y is an integer between 20 and 70 and z is from 0 to 40.
Claim 5
Dependent Claim
19 words
A zeolite composition according to claim 3 wherein the aluminosilicate is selected from ZSM-5, ZSM-8, ZSM-11, ZSM-12 and ZSM-35.
Claim 6
Dependent Claim
27 words
A zeolite composition comprising an aluminosilicate having a molar ratio of silica to alumina between 20:1 and 70:1 in which cations have been exchanged with gallium ions.
Claim 7
Dependent Claim
27 words
A zeolite composition comprising an aluminosilicate having a molar ratio of silica to alumina between 20:1 and 70:1 in which cations have been exchanged with gallium ions.
References Cited (Backward Citations)
US3010789A
Cited
US3702886A
Cited
US3709979A
Cited
US3832449A
Cited
US4056575A
Cited
US4025571A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-11-19 | 1983-05-21 | 1983-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-19 | 1987-05-21 | 1987-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-19 | 1991-05-21 | 1991-11-20 | $7700.00 | Window Closed / Lapsed |