US3668265A
Expired / Lapsed
US
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Disproportionation of alkylbenzenes
Assignee: Phillips Petroleum Co
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Filing: 1970-01-14
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Granted: 1972-06-06
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Expires: 1990-01-14
Abstract
Abstract Disproportionation of alkylbenzenes is promoted by the use of catalysts prepared from antimony salts, optionally with cobalt or nickel salts, on alumina.
Inventors
- 👤 Donald C Tabler
- 👤 Marvin M Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:04
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/843; B01J23/8435; C; C07; C07C; C07C6/00; C07C6/08; C07C6/12; C07C6/123
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
41 words
A catalyst according to claim 1 wherein said catalyst contains from about 1 to about 10 weight per cent of said antimony, and from about 5 to about 10 weight per cent of at least one of said cobalt and nickel.
Claim 2
Independent Claim
160 words
A method of preparing a catalyst comprising antimony on alumina, said alumina selected from at least one of an alumina, a fluoride compound-treated alumina, and an alumina combined with at least one of zirconia, titania, boria, beryllia, combinations thereof, and mixtures thereof, wherein said catalyst contains from about 1 to aboUt 20 weight per cent of said antimony, said catalyst further containing at least one of cobalt and nickel such that said catalyst contains from about 1 to about 15 weight per cent of at least one of said cobalt and nickel, said method comprising the steps of: a. bringing together in aqueous dispersion a salt of said antimony, a salt of at least one of said cobalt and nickel, and said alumina, b. neutralizing said dispersion with an alkaline material, c. dewatering said dispersion, thereby leaving a dried composition, d. calcining said dried composition, e. reducing said calcined composition in the presence of hydrogen, and thereby producing said catalyst.
Claim 3
Dependent Claim
58 words
A method of preparing said catalyst according to claim 3 wherein said antimony salt is a water soluble antimony salt; said salt of at least one of cobalt and nickel is a water soluble salt; and wherein said neutralizing step is accomplished by utilizing at least one of ammonia, a strongly basic amine, and an alkali metal hydroxide.
Claim 4
Dependent Claim
39 words
A method of preparing said catalyst composition according to claim 4 wherein the neutralizing step is accomplished with at least one alkali metal hydroxide, and the neutralized composition is washed so as to substantially remove excess alkali metal hydroxide.
Claim 5
Dependent Claim
55 words
A process for the disproportionation of alkylbenzenes which comprises contacting at least one alkylbenzene with a catalyst selected from at least one of antimony on an alumina substrate, antimony and cobalt on an alumina substrate, antimony and nickel on an alumina substrate, and antimony and cobalt and nickel on an alumina substrate, under disproportionation conditions.
Claim 6
Dependent Claim
38 words
A process according to claim 6 wherein said alumina substrate is selected from at least one of alumina, fluoride compound-treated alumina, alumina combined with at least one of zirconia, titania, boria, and beryllia, combinations thereof, and mixtures thereof.
Claim 7
Dependent Claim
55 words
A process according to claim 6 wherein said alkylbenzene is represented by the formula wherein R is an alkyl group having from one to about three carbon atoms, n is an integer in the range of from 1 to 4, and wherein the products of said disproportionation include wherein m is either 1 or 2.
Claim 8
Dependent Claim
71 words
A process according to claim 8 wherein said disproportionation conditions include from about 1:1 to about 10: 1 moles of hydrogen per mole of hydrocarbon feed, a reaction zone temperature of from about 700* to about 1,000* F., a reaction zone pressure of from about 100 to about 2,000 psig, and a space velocity of from about 0.1 to about 20 volumes of liquid feed per volume of catalyst per hour.
Claim 9
Dependent Claim
34 words
A process according to claim 9 wherein further is employed a halogen-containing compound in an amount constituting from about 50 to about 10,000 parts per million by weight as halogen relative to said alkylbenzene.
Claim 10
Dependent Claim
58 words
A process according to claim 10 wherein said halogen-containing compound is selected from at least one of HX and R''Xp wherein X is selected from at least one of fluorine, chlorine, bromine, and iodine, R'' is a hydrocarbyl radical containing from one to about 10 carbon atoms, and p is an integer of from 1 to about 4.
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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |