Patent US4191637A successfully refreshed from Google Patents.
US4191637A
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Aromatization process and catalyst
Assignee: Honeywell UOP LLC
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Filing: 1978-08-14
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Granted: 1980-03-04
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Expires: 1998-08-14
Abstract
Abstract Paraffinic, olefinic and naphthenic hydrocarbons are converted to aromatic hydrocarbons by contacting the same at elevated temperatures with a catalyst comprising an alumina-supported composite of platinum, chlorine and a minor proportion of cesium, with or without other added metals such as iridium, rhodium, rhenium and the like.
Inventors
- 👤 Steven D. Light
- 👤 John W. Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:23
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/085; C10G35/09; B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/58; B01J23/64; B01J23/656; B01J23/6567; C07; C07C; C07C5/00; C07C5/32; C07C5/373; C07C5/393; C07C5/41; C07C5/415; C07C5/417
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
65 words
A process for the aromatization of a feedstock comprising C 6 -C 12 paraffinic and/or olefinic hydrocarbons having a straight chain of at least 5 carbon atoms, which comprises contacting said feedstock under dehydrocyclization conditions with a catalyst comprising alumina and supported thereon about 0.1-2 wt.% Pt, about 0.1-3 wt.% Cl and sufficient Cs to provide a Cs/Cl atomic ratio between about 0.005 and 0.2.
Claim 2
Dependent Claim
65 words
A process for the aromatization of a feedstock comprising C 6 -C 12 paraffinic and/or olefinic hydrocarbons having a straight chain of at least 5 carbon atoms, which comprises contacting said feedstock under dehydrocyclization conditions with a catalyst comprising alumina and supported thereon about 0.1-2 wt.% Pt, about 0.1-3 wt.% Cl and sufficient Cs to provide a Cs/Cl atomic ratio between about 0.005 and 0.2.
Claim 3
Dependent Claim
21 words
A process as defined in claim 1 wherein the Cs/Cl atomic ratio in said catalyst is between about 0.01 and 0.15.
Claim 4
Dependent Claim
13 words
A process as defined in claim 1 wherein said feedstock is essentially n-hexane.
Claim 5
Dependent Claim
32 words
A process as defined in claim 1 wherein said feedstock is a naphtha boiling between about 125°-420° F. and containing at least about 30 weight-percent of C 6 -C 12 paraffin hydrocarbons.
Claim 6
Dependent Claim
72 words
A process for the aromatization of a feedstock comprising C 6 -C 12 paraffinic and/or olefinic hydrocarbons having a straight chain of at least 6 carbon atoms, which comprises contacting said feedstock under dehydrocyclization conditions with a catalyst comprising alumina and supported thereon about 0.1-2 wt.% Pt, about 0.1-3 wt.% Cl, about 0.02-0.5 wt.% of Ir and/or Rh and sufficient Cs to provide a Cs/Cl atomic ratio between about 0.005 and 0.2.
Claim 7
Dependent Claim
72 words
A process for the aromatization of a feedstock comprising C 6 -C 12 paraffinic and/or olefinic hydrocarbons having a straight chain of at least 6 carbon atoms, which comprises contacting said feedstock under dehydrocyclization conditions with a catalyst comprising alumina and supported thereon about 0.1-2 wt.% Pt, about 0.1-3 wt.% Cl, about 0.02-0.5 wt.% of Ir and/or Rh and sufficient Cs to provide a Cs/Cl atomic ratio between about 0.005 and 0.2.
Claim 8
Dependent Claim
21 words
A process as defined in claim 5 wherein the Cs/Cl atomic ratio in said catalyst is between about 0.01 and 0.15.
Claim 9
Dependent Claim
12 words
A process as defined in claim 5 containing about 0.5-2.0 wt.%. Cl.
Claim 10
Dependent Claim
21 words
A process as defined in claim 7 wherein the Cs/Cl atomic ratio in said catalyst is between about 0.01 and 0.15.
Claim 11
Dependent Claim
12 words
A process as defined in claim 8 wherein said catalyst comprises Ir.
Claim 12
Dependent Claim
13 words
A process as defined in claim 9 wherein said feedstock is essentially n-hexane.
Claim 13
Dependent Claim
32 words
A process as defined in claim 9 wherein said feedstock is a naphtha boiling between about 125°-420° F. and containing at least about 30 weight-percent of C 6 -C 12 paraffin hydrocarbons.
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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) | 1983-03-04 | 1983-09-03 | 1984-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-04 | 1987-09-03 | 1988-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-04 | 1991-09-03 | 1992-03-04 | $7700.00 | Window Closed / Lapsed |