US4233184A
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Aluminum phosphate-alumina compositions and catalysts comprising the same
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1979-01-18
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Granted: 1980-11-11
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Expires: 1999-01-18
Abstract
Abstract High surface area aluminum phosphate-alumina compositions are prepared by reaction of a mixture comprising an aluminum alkoxide and an organic phosphate such as trialkyl or triaryl phosphate, in the presence of moist air to form a precipitate, separating the precipitate from the mixture, drying and calcining the precipitate and recovering a high surface area aluminum phosphate-alumina product which can be used as catalyst support or catalyst component, especially for hydrocarbon treating and conversion processes.
Inventors
- 👤 Neville L. Cull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:20
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/16; B01J35/00; B01J35/60; B01J35/61; B01J35/617; B01J35/63; B01J35/635
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
69 words
An aluminum phosphate-alumina composition prepared by the steps which comprise reacting a mixture comprising an aluminum alkoxide and an organic phosphate having the formula (RO) 3 PO wherein R is a hydrocarbon radical selected from the group consisting of alkyl, aryl, cycloalkyl, alkaryl, aralkyl radicals and mixtures thereof, in the presence of moist air, to form an aluminum phosphate-alumina precipitate, and separating said aluminum phosphate-alumina precipitate from said mixture.
Claim 2
Dependent Claim
69 words
An aluminum phosphate-alumina composition prepared by the steps which comprise reacting a mixture comprising an aluminum alkoxide and an organic phosphate having the formula (RO) 3 PO wherein R is a hydrocarbon radical selected from the group consisting of alkyl, aryl, cycloalkyl, alkaryl, aralkyl radicals and mixtures thereof, in the presence of moist air, to form an aluminum phosphate-alumina precipitate, and separating said aluminum phosphate-alumina precipitate from said mixture.
Claim 3
Dependent Claim
14 words
The composition of claim 1 wherein R contains from 1 to 20 carbon atoms.
Claim 4
Dependent Claim
41 words
The composition of claim 1 wherein said aluminum phosphate-alumina composition comprises about 50 weight percent alumina and about 50 weight percent aluminum phosphate and wherein said composition has a surface area ranging from about 550 to about 600 m 2 /g.
Claim 5
Dependent Claim
21 words
The composition of claim 1 wherein said aluminum phosphate-alumina composition comprises from about 10 to about 90 weight percent aluminum phosphate.
Claim 6
Dependent Claim
24 words
The composition of claim 1 wherein the molar ratio of said aluminum alkoxide to said organic phosphate ranges from about 10:1 to about 0.5:1.
Claim 7
Dependent Claim
20 words
The composition of claim 1 wherein the molar ratio of said aluminum alkoxide to said organic phosphate is about 1:1.
Claim 8
Dependent Claim
20 words
The composition of claim 1 wherein said reaction is conducted at temperature ranging from about 25° to about 100° C.
Claim 9
Dependent Claim
26 words
The composition of claim 1 wherein the alkoxide constituent of said aluminum alkoxide is selected from the group consisting of C 1 to C 20 alkoxides.
Claim 10
Dependent Claim
11 words
The composition of claim 1 wherein said separated precipitate is calcined.
Claim 11
Dependent Claim
21 words
The composition of claim 9 wherein said calcination is conducted at a temperature ranging from about 400° to about 800° C.
Claim 12
Dependent Claim
15 words
The composition of claim 9 wherein prior to said calcination, said precipitate is air dried.
Claim 13
Dependent Claim
18 words
The composition of claim 1 wherein said mixture comprises an added alkoxide of an element other than aluminum.
Claim 14
Dependent Claim
25 words
The composition of claim 12, wherein said added alkoxide is selected from the group consisting of silicon alkoxide, zirconium alkoxide, titanium alkoxide and mixtures thereof.
Claim 15
Dependent Claim
97 words
A catalyst comprising a metal component selected from the group consisting of Group IB, Group IIA, Group IIB, Group IVA, Group IVB, Group VIIB, Group VIII and mixtures thereof from the Periodic Table of Elements composited with an aluminum phosphate-alumina composition prepared by the steps which comprise reacting a mixture comprising an aluminum alkoxide and an organic phosphate having the formula (RO) 3 PO wherein R is a hydrocarbon radical selected from the group consisting of alkyl, aryl, cycloalkyl, aralkyl, alkaryl radicals and mixtures thereof, in the presence of moist air to form an aluminum phosphate-alumina precipitate.
Claim 16
Dependent Claim
97 words
A catalyst comprising a metal component selected from the group consisting of Group IB, Group IIA, Group IIB, Group IVA, Group IVB, Group VIIB, Group VIII and mixtures thereof from the Periodic Table of Elements composited with an aluminum phosphate-alumina composition prepared by the steps which comprise reacting a mixture comprising an aluminum alkoxide and an organic phosphate having the formula (RO) 3 PO wherein R is a hydrocarbon radical selected from the group consisting of alkyl, aryl, cycloalkyl, aralkyl, alkaryl radicals and mixtures thereof, in the presence of moist air to form an aluminum phosphate-alumina precipitate.
Claim 17
Dependent Claim
15 words
The catalyst of claim 14 wherein said R contains from 1 to 20 carbon atoms.
Claim 18
Dependent Claim
51 words
The catalyst of claim 14 wherein said aluminum phosphate-alumina composition comprises from about 50 weight percent alumina and from about 50 weight percent aluminum phosphate and wherein said composition has a surface area ranging from about 550 to about 600 m 2 /g prior to being composited with said metal component.
Claim 19
Dependent Claim
20 words
The catalyst of claim 14 wherein said aluminum phosphate-alumina composition comprises from about 10 to about 90 percent aluminum phosphate.
Claim 20
Dependent Claim
24 words
The catalyst of claim 14 wherein the molar ratio of said aluminum alkoxide to said organic phosphate ranges from about 10:1 to about 0.5:1.
Claim 21
Dependent Claim
20 words
The catalyst of claim 14 wherein the molar ratio of said aluminum alkoxide to said organic phosphate is about 1:1.
Claim 22
Dependent Claim
21 words
The catalyst of claim 14 wherein said reaction is conducted at a temperature ranging from about 25° to about 100° C.
Claim 23
Dependent Claim
26 words
The catalyst of claim 14 wherein the alkoxide constituent of said aluminum alkoxide is selected from the group consisting of C 1 to C 20 alkoxides.
Claim 24
Dependent Claim
22 words
The catalyst of claim 14 wherein said aluminum phosphate-alumina precipitate is separated from said mixture and wherein the separated precipitate is calcined.
Claim 25
Dependent Claim
21 words
The catalyst of claim 22 wherein said calcination is conducted at a temperature ranging from about 400° to about 800° C.
Claim 26
Dependent Claim
16 words
The catalyst of claim 22 wherein prior to said calcination step, said precipitate is air dried.
Claim 27
Dependent Claim
18 words
The catalyst of claim 14 wherein said mixture comprises an added alkoxide of an element other than aluminum.
Claim 28
Dependent Claim
25 words
The catalyst of claim 25 wherein said added alkoxide is selected from the group consisting of silicon alkoxide, zirconium alkoxide, titanium alkoxide and mixtures thereof.
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) | 1983-11-11 | 1984-05-12 | 1984-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-11 | 1988-05-12 | 1988-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-11 | 1992-05-12 | 1992-11-11 | $7700.00 | Window Closed / Lapsed |