US4115463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of cycloalkylaromatics
Assignee: Phillips Petroleum Co
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Filing: 1975-08-28
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Granted: 1978-09-19
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Expires: 1995-08-28
Abstract
Abstract Cycloalkylaromatics are produced from aromatic hydrocarbons in the presence of hydrogen and a catalyst consisting essentially of ruthenium, nickel and a support material selected from the group consisting of active clay and silica-alumina.
Inventors
- 👤 Timothy P. Murtha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:50
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/89; B01J23/892; C; C07; C07C; C07C2/00; C07C2/74; C07C2521/00; C07C2521/12; C07C2521/16; C07C2523/00; C07C2523/38; C07C2523/40; C07C2523/46; C07C2523/70; C07C2523/74; C07C2523/755; C07C2523/89
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
131 words
A process for producing cycloalkylaromatics and alkyl-substituted cycloalkylaromatics which comprises contacting a monocyclic aromatic hydrocarbon or alkyl-substituted monocyclic aromatic hydrocarbon with hydrogen in the presence of a catalyst consisting essentially of from about 0.01 to 0.3 weight percent ruthenium, from about 0.03 to 1.0 weight percent nickel and a support material selected from the group consisting of active clay and silica-alumina in a weight ratio of ruthenium to nickel in the approximate range of 0.01:1 to 0.3:1, wherein said nickel is introduced into said support material as nickel bromide, wherein said contacting is effected at a temperature in the range of about 100° to about 275° C at a hydrogen pressure in the range of about 100 to about 2000 psig and an LHSV in the range of 20 to 35.
Claim 2
Dependent Claim
131 words
A process for producing cycloalkylaromatics and alkyl-substituted cycloalkylaromatics which comprises contacting a monocyclic aromatic hydrocarbon or alkyl-substituted monocyclic aromatic hydrocarbon with hydrogen in the presence of a catalyst consisting essentially of from about 0.01 to 0.3 weight percent ruthenium, from about 0.03 to 1.0 weight percent nickel and a support material selected from the group consisting of active clay and silica-alumina in a weight ratio of ruthenium to nickel in the approximate range of 0.01:1 to 0.3:1, wherein said nickel is introduced into said support material as nickel bromide, wherein said contacting is effected at a temperature in the range of about 100° to about 275° C at a hydrogen pressure in the range of about 100 to about 2000 psig and an LHSV in the range of 20 to 35.
Claim 3
Dependent Claim
25 words
A process according to claim 1 wherein benzene is converted to cyclohexylbenzene by contacting benzene and hydrogen with a ruthenium chloride/nickel bromide/montmorillonite active clay catalyst.
Claim 4
Dependent Claim
23 words
A process according to claim 1 wherein benzene is converted to cycloalkylbenzene by contacting benzene and hydrogen with a ruthenium chloride/nickel bromide/silica-alumina catalyst.
Claim 5
Dependent Claim
42 words
A process according to claim 1 wherein said ruthenium is present in said catalyst in an amount ranging from 0.03 to 0.1 weight percent and said nickel is present in said catalyst in an amount ranging from 0.1 to 0.6 weight percent.
Claim 6
Dependent Claim
22 words
A process according to claim 1 wherein said weight ratio of ruthenium to nickel is in the range of 0.1:1 to 0.25:1.
Claim 7
Dependent Claim
22 words
A process according to claim 4 wherein said weight ratio of ruthenium to nickel is in the range of 0.1:1 to 0.25:1.
Claim 8
Dependent Claim
34 words
A process according to claim 1 wherein said contacting is effected at a temperature in the range of 185° to 250° C and a hydrogen pressure in the range of 400 to 600 psig.
Claim 9
Dependent Claim
45 words
A process according to claim 7 wherein a liquid phase of benzene and hydrogen is passed through a bed of active clay catalyst promoted with ruthenium chloride and nickel bromide, said active clay containing about 74 weight percent silica and about 17.5 weight percent alumina.
Claim 10
Dependent Claim
45 words
A process according to claim 7 wherein a liquid phase of benzene and hydrogen is passed through a bed of active clay catalyst promoted with ruthenium chloride and nickel bromide, said active clay containing about 71 weight percent silica and about 16.5 weight percent alumina.
Claim 11
Dependent Claim
41 words
A process according to claim 7 wherein a liquid phase of benzene and hydrogen is passed through a bed of synthetic silica-alumina catalyst promoted with ruthenium chloride and nickel bromide, said synthetic silica-alumina containing at least about 50 weight percent silica.
References Cited (Backward Citations)
US3829515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-18 | 1982-03-20 | 1982-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-18 | 1986-03-20 | 1986-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-18 | 1990-03-20 | 1990-09-19 | $7700.00 | Window Closed / Lapsed |