US4642403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of aromatics from ethane and/or ethylene
Assignee: Honeywell UOP LLC
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Filing: 1986-05-08
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Granted: 1987-02-10
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Expires: 2006-05-08
Abstract
Abstract This invention relates to a process for producing aromatic hydrocarbons by bringing a feedback containing at least 10% w/w of C 2 hydrocarbons into contact with a catalyst composition comprising a gallium loaded ziolite and a Group VIII metal selected from rhodium and platinum. The reaction is carried out at a temperature from 500°-750° C. A WHSV of 0.2-10 and a pressure of 1-20 bar are preferred. The presence of Group VIII metal increases conversion of the C 2 feed reduces formation of undesirable polynuclear aromatics.
Inventors
- 👤 Edward A. Hyde
- 👤 Timothy K. McNiff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:39
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/061; C; C07; C07C; C07C2/00; C07C2523/00; C07C2523/08; C07C2523/16; C07C2523/32; C07C2523/38; C07C2523/40; C07C2523/70; C07C2523/74; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/40; C07C2529/70
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
77 words
A process for producing aromatic hydrocarbons, said process comprising bringing into contact in the vapour phase at a temperature from 500°-750° C. a hydrocarbon feedstock containing at least 10% by weight of C 2 hydrocarbons with a catalyst composition comprising (i) an aluminosilicate loaded with gallium as a gallium compound and/or as gallium ions and having a silica to alumina molar ratio of at least 5:1, and (ii) a Group VIII metal selected from rhodium and platinum.
Claim 2
Dependent Claim
77 words
A process for producing aromatic hydrocarbons, said process comprising bringing into contact in the vapour phase at a temperature from 500°-750° C. a hydrocarbon feedstock containing at least 10% by weight of C 2 hydrocarbons with a catalyst composition comprising (i) an aluminosilicate loaded with gallium as a gallium compound and/or as gallium ions and having a silica to alumina molar ratio of at least 5:1, and (ii) a Group VIII metal selected from rhodium and platinum.
Claim 3
Dependent Claim
20 words
A process according to claim 1 wherein the hydrocarbon feedstock contains at least 50% by weight of C 2 hydrocarbons.
Claim 4
Dependent Claim
22 words
A process according to claim 1 or 2 wherein the aluminosilicate loaded with gallium is an MFI or an MEL type zeolite.
Claim 5
Dependent Claim
26 words
A process according to claim 1 or 2 wherein gallium is present in an amount from 0.05 to 10% by weight of the total catalyst composition.
Claim 6
Dependent Claim
29 words
A process according to claim 1 or 2 wherein the Group VIII metal is present in an amount from 0.05 to 10% by weight of the total catalyst composition.
Claim 7
Dependent Claim
31 words
A process according to claim 1 or 2 wherein the catalyst composition is activated by heating at a temperature from 400° to 650° C. prior to contact with the hydrocarbon feedstock.
Claim 8
Dependent Claim
31 words
A process according to claim 1 or 2 wherein the hydrocarbon feedstock is brought into contact with the catalyst composition at a WHSV from 0.2-10 and a pressure from 1-20 bar.
Claim 9
Dependent Claim
26 words
A process according to claim 1 or 2 wherein the hydrocarbon feedstock is brought into contact with the catalyst composition at a temperature from 525°-600° C.
Claim 10
Dependent Claim
25 words
A process according to claim 1 or 2 wherein the catalyst composition is combined with a porous matrix material prior to contact with the feedstock.
Claim 11
Dependent Claim
31 words
A process according to claim 1 or 2 wherein unreacted C 2 hydrocarbons are recovered from the reaction products and are recycled along with the fresh hydrocarbon feedstock to be aromatised.
References Cited (Backward Citations)
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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) | 1990-02-09 | 1990-08-11 | 1991-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-09 | 1994-08-11 | 1995-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-09 | 1998-08-11 | 1999-02-10 | $7700.00 | Window Closed / Lapsed |