Patent US4097367A successfully refreshed from Google Patents.
US4097367A
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Conversion of olefinic naphtha
Assignee: Mobil Oil AS
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Filing: 1977-07-25
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Granted: 1978-06-27
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Expires: 1997-07-25
Abstract
Abstract High severity catalytic conversion of olefinic naphthas which contain diolefins is conducted over special catalysts to yield a product stream which contains little or no non-aromatics boiling in the range of benzene, toluene and xylene. The catalysts are combinations of zinc and a metal of Groups I B and VIII of the Periodic Table with a crystalline aluminosilicate zeolite having a silica/alumina ratio greater than 12 and a constraint index not less than one nor greater than 12.
Inventors
- 👤 Werner O. Haag
- 👤 Tracy J. Huang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:05
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/095; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/70; B01J29/7049; B01J29/72; B01J29/74
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
97 words
A process for upgrading of pyrolysis gasoline and other olefinic naphthas which contain olefins which comprises contacting said naphtha at severe conditions of 900° to 1200° F, a pressure of atmospheric to 400 pounds per square inch and weight hourly space velocity of 0.3 to 30 with a catalyst composite of zinc and at least one metal selected from the groups consisting of IB and VIII of the Periodic Table in intimate association with a porous crystalline aluminosilicate zeolite having a silica to alumina ratio of at least 12 and a constraint index between 1 and 12.
Claim 2
Dependent Claim
97 words
A process for upgrading of pyrolysis gasoline and other olefinic naphthas which contain olefins which comprises contacting said naphtha at severe conditions of 900° to 1200° F, a pressure of atmospheric to 400 pounds per square inch and weight hourly space velocity of 0.3 to 30 with a catalyst composite of zinc and at least one metal selected from the groups consisting of IB and VIII of the Periodic Table in intimate association with a porous crystalline aluminosilicate zeolite having a silica to alumina ratio of at least 12 and a constraint index between 1 and 12.
Claim 3
Dependent Claim
26 words
The process of claim 1 conducted at a severity to yield a liquid product fraction containing less than 5% of non-aromatic hydrocarbons boiling above 167° F.
Claim 4
Dependent Claim
25 words
The process of claim 1 conducted at a severity to yield a liquid product containing less than 1% of non-aromatic hydrocarbons boiling above 167° F.
Claim 5
Dependent Claim
23 words
The process of claim 1 conducted at a severity to yield a liquid product containing substantially no non-aromatic hydrocarbons boiling above 167° F.
Claim 6
Dependent Claim
19 words
The process of claim 1 wherein said metal of Group VIII is ruthenium, rhodium, palladium, osmium, iridium or platinum.
Claim 7
Dependent Claim
10 words
The process of claim 5 wherein said metal is palladium.
Claim 8
Dependent Claim
23 words
The process of claim 1 conducted at a temperature not lower than 980° F and weight hourly space velocity not greater than 5.
Claim 9
Dependent Claim
11 words
The process of claim 1 wherein the charge naphtha contains diolefins.
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) | 1981-06-26 | 1981-12-26 | 1982-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-26 | 1985-12-26 | 1986-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-26 | 1989-12-26 | 1990-06-27 | $7700.00 | Window Closed / Lapsed |