US4153637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of ammonia in the formation of aromatic hydrocarbons by dehydroisomerizing alkylcyclopentane with a platinum hydrogen mordenite catalyst
Assignee: Chevron Belgium NV
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Filing: 1977-12-23
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Granted: 1979-05-08
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Expires: 1997-12-23
Abstract
Abstract A process for the dehydroisomerization of hydrocarbons in the presence of a catalyst composed of a metal of Group VIII supported on mordenite in hydrogen form and treated with ammonia.
Inventors
- 👤 Walter F. DE Vleesschauwer
- 👤 Alan Molyneux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:39
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/095; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/18; B01J29/20; C07; C07C; C07C5/00; C07C5/32; C07C5/373; C07C5/387
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
56 words
A process for the dehydroisomerization of alkylcyclopentane and hydrocarbon charge stocks containing alkylcyclopentane into aromatic hydrocarbons by contacting said alkylcyclopentane at an elevated temperature of at least 330° C. in the presence of hydrogen and a catalyst comprising a metal of Group VIII of the Periodic System supported on mordenite in hydrogen form treated with ammonia.
Claim 2
Dependent Claim
56 words
A process for the dehydroisomerization of alkylcyclopentane and hydrocarbon charge stocks containing alkylcyclopentane into aromatic hydrocarbons by contacting said alkylcyclopentane at an elevated temperature of at least 330° C. in the presence of hydrogen and a catalyst comprising a metal of Group VIII of the Periodic System supported on mordenite in hydrogen form treated with ammonia.
Claim 3
Dependent Claim
13 words
A process according to claim 1 wherein said Group VIII metal is platinum.
Claim 4
Dependent Claim
18 words
A process according to claim 1 wherein said catalyst comprises from about 0.01 to 5.0 weight percent platinum.
Claim 5
Dependent Claim
18 words
A process according to claim 1 wherein said catalyst comprises from about 0.1 to 1.0 weight percent platinum.
Claim 6
Dependent Claim
20 words
A process according to claim 1 wherein said catalyst additionally comprises a metal of Groups VI A or VII A.
Claim 7
Dependent Claim
12 words
A process according to claim 1 wherein said catalyst additionally comprises rhenium.
Claim 8
Dependent Claim
11 words
A process according to claim 1 wherein said alkylcyclopentane is methylcyclopentane.
Claim 9
Dependent Claim
17 words
A process according to claim 1 wherein said hydrocarbon charge stock is a naphtha fraction containing alkylcyclopentane.
Claim 10
Dependent Claim
20 words
A process according to claim 1 wherein said elevated temperature is in the range of from 350 to 500° C.
Claim 11
Dependent Claim
16 words
A process according to claim 1 wherein said elevated temperature is from 350 to 400° C.
Claim 12
Dependent Claim
19 words
A process according to claim 1 wherein said catalyst is treated with ammonia prior to contacting with said alkylcyclopentane.
Claim 13
Dependent Claim
17 words
A process according to claim 1 wherein said catalyst is contacted simultaneously with ammonia and said alkylcyclopentane.
Claim 14
Dependent Claim
18 words
A process according to claim 1 wherein said catalyst is contacted alternately with ammonia and with said alkylcyclopentane.
References Cited (Backward Citations)
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US3632525A
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US3630961A
Cited
US3997618A
Cited
US3751502A
Cited
US3772400A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-07 | 1982-11-06 | 1983-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-07 | 1986-11-06 | 1987-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-07 | 1990-11-06 | 1991-05-08 | $7700.00 | Window Closed / Lapsed |