Patent US4092271A successfully refreshed from Google Patents.
US4092271A
Expired / Lapsed
US
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Supported vanadia catalyst for nitrile production and process for preparing the catalyst
Assignee: Lummus Technology LLC
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Filing: 1977-07-28
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Granted: 1978-05-30
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Expires: 1997-07-28
Abstract
Abstract Vanadia supported on a silica-alumina or gamma-alumina support in an amount to provide a vanadia to support weight ratio ranging from about 0.3:1 to about 3:1 substantially entirely within the pores of the support, the vanadia having been placed in molten form substantially within the pores of a support having a surface area greater than about 50m 2 gram, a porosity greater than about 0.4 cc/gram which further includes an alkali metal, with the vanadium metal to alkali metal mole ratio being from 2:1 to 30:1. At least a portion of the alkali metal is preferably in the form of alkali metal vanadate. The catalyst is used for the production of nitriles from a compound containing at least one alkyl group.
Inventors
- 👤 Morgan C. Sze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:18
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/78; C07D213/84; B; B01; B01J; B01J23/00; B01J23/16; B01J23/20; B01J23/22; C07C; C07C253/00; C07C253/24; C07C253/28
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
95 words
In a catalyst of vanadia supported on a porous support in an amount to provide a vanadia to support weight ratio ranging from about 0.3:1 to about 3:1 substantially entirely within the pores of the support, said vanadia having been placed in molten form substantially within the pores of the support having a surface area greater than about 50m 2 /gram, a porosity greater than about 0.4 cc/gram, the improvement comprising: said catalyst containing an alkali metal in an amount to provide a vanadium metal to alkali metal mole ratio of from 2:1 to 30:1.
Claim 2
Dependent Claim
95 words
In a catalyst of vanadia supported on a porous support in an amount to provide a vanadia to support weight ratio ranging from about 0.3:1 to about 3:1 substantially entirely within the pores of the support, said vanadia having been placed in molten form substantially within the pores of the support having a surface area greater than about 50m 2 /gram, a porosity greater than about 0.4 cc/gram, the improvement comprising: said catalyst containing an alkali metal in an amount to provide a vanadium metal to alkali metal mole ratio of from 2:1 to 30:1.
Claim 3
Dependent Claim
10 words
The catalyst of claim 1 wherein the support is silica-alumina.
Claim 4
Dependent Claim
11 words
The catalyst of claim 2 wherein the alkali metal is sodium.
Claim 5
Dependent Claim
20 words
The catalyst of claim 3 wherein the vanadium metal to alkali metal mole ratio is from about 8:1 to 20:1.
Claim 6
Dependent Claim
10 words
The catalyst of claim 1 wherein the support is gamma-alumina.
Claim 7
Dependent Claim
11 words
The catalyst of claim 5 wherein the alkali metal is sodium.
Claim 8
Dependent Claim
20 words
The catalyst of claim 6 wherein the vanadium metal to alkali metal mole ratio is from about 8:1 to 20:1.
Claim 9
Dependent Claim
18 words
The catalyst of claim 1 wherein a portion of the alkali metal is present as alkali metal vanadate.
Claim 10
Dependent Claim
10 words
The catalyst of claim 8 wherein the support is silica-alumina.
Claim 11
Dependent Claim
11 words
The catalyst of claim 9 wherein the alkali metal is sodium.
Claim 12
Dependent Claim
20 words
The catalyst of claim 10 wherein the vanadium metal to alkali metal mole ratio is from about 8:1 to 20:1.
Claim 13
Dependent Claim
10 words
The catalyst of claim 8 wherein the support is gamma-alumina.
Claim 14
Dependent Claim
11 words
The catalyst of claim 12 wherein the alkali metal is sodium.
Claim 15
Dependent Claim
20 words
The catalyst of claim 13 wherein the vanadium metal to alkali metal mole ratio is from about 8:1 to 20:1.
Claim 16
Dependent Claim
109 words
A process for producing a supported vanadia catalyst, comprising: treating a porous support having a surface area greater than about 50 meters square per gm., and a porosity greater than about 0.4 cc per gm. with an aqueous solution of an alkali metal hydroxide, and heating the treated supported and vanadia on the support to above the vanadia fusion temperature, said vanadia and alkali metal hydroxide being employed in an amount to provide a vanadia to support weight ratio ranging from about 0.3:1 to about 3:1 substantially entirely within the pores of the support and a vanadium metal to alkali metal mole ratio of from about 2:1 to 30:1.
Claim 17
Dependent Claim
109 words
A process for producing a supported vanadia catalyst, comprising: treating a porous support having a surface area greater than about 50 meters square per gm., and a porosity greater than about 0.4 cc per gm. with an aqueous solution of an alkali metal hydroxide, and heating the treated supported and vanadia on the support to above the vanadia fusion temperature, said vanadia and alkali metal hydroxide being employed in an amount to provide a vanadia to support weight ratio ranging from about 0.3:1 to about 3:1 substantially entirely within the pores of the support and a vanadium metal to alkali metal mole ratio of from about 2:1 to 30:1.
Claim 18
Dependent Claim
22 words
The process of claim 15 wherein the support is treated with said alkali metal hydroxide prior to placing vanadia on the support.
Claim 19
Dependent Claim
26 words
The process of claim 15 wherein the support is treated with the aqueous solution of alkali metal hydroxide subsequent to placing said vanadia on the support.
Claim 20
Dependent Claim
23 words
The process of claim 15 wherein the support is treated with said alkali metal hydroxide simultaneously with placing said vanadia on said support.
Claim 21
Dependent Claim
13 words
The process of claim 15 wherein said alkali metal hydroxide is sodium hydroxide.
Claim 22
Dependent Claim
10 words
The process of claim 19 wherein said support is gamma-alumina.
Claim 23
Dependent Claim
10 words
The process of claim 19 wherein said support is silica-alumina.
Claim 24
Dependent Claim
131 words
A process for producing a supported vanadia catalyst, comprising: heating a mixture of an alkali metal hydroxide and vanadia supported on a porous support having a surface area greater than about 50 meters square per gram and a porosity greater than about 0.4 cc per gram to the fusion temperature of vanadia at an average rate of less than 20° F per minute, said vanadia and alkali metal hydroxide being employed in an amount to provide a vanadia to support weight ratio of from 0.3:1 to 3:1 substantially entirely within the pores of the support and a vanadium metal to alkali metal mole ratio of from about 2:1 to 30:1; and maintaining the supported mixture at vanadia fusion temperature to place the vanadia substantially entirely within the pores of the support.
Claim 25
Dependent Claim
131 words
A process for producing a supported vanadia catalyst, comprising: heating a mixture of an alkali metal hydroxide and vanadia supported on a porous support having a surface area greater than about 50 meters square per gram and a porosity greater than about 0.4 cc per gram to the fusion temperature of vanadia at an average rate of less than 20° F per minute, said vanadia and alkali metal hydroxide being employed in an amount to provide a vanadia to support weight ratio of from 0.3:1 to 3:1 substantially entirely within the pores of the support and a vanadium metal to alkali metal mole ratio of from about 2:1 to 30:1; and maintaining the supported mixture at vanadia fusion temperature to place the vanadia substantially entirely within the pores of the support.
Claim 26
Dependent Claim
18 words
The process of claim 22 wherein the support is selected from the group consisting of gamma-alumina and silica-alumina.
Claim 27
Dependent Claim
13 words
The process of claim 23 wherein the alkali metal hydroxide is sodium hydroxide.
Claim 28
Dependent Claim
16 words
The process of claim 24 wherein the average heating rate is no greater than 10° F/min.
Claim 29
Dependent Claim
30 words
The process of claim 25 wherein the supported mixture is maintained at a temperature of from 1300° F to 1450° F for a period of from 1 to 10 hours.
Claim 30
Dependent Claim
10 words
The process of claim 25 wherein the support is silica-alumina.
Claim 31
Dependent Claim
10 words
The process of claim 25 wherein the support is gamma-alumina.
Claim 32
Dependent Claim
9 words
The catalyst produced by the process of claim 22.
Claim 33
Dependent Claim
9 words
The catalyst produced by the process of claim 24.
Claim 34
Dependent Claim
9 words
The catalyst produced by the process of claim 27.
Claim 35
Dependent Claim
9 words
The catalyst produced by the process of claim 28.
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) | 1981-05-29 | 1981-11-28 | 1982-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-29 | 1985-11-28 | 1986-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-29 | 1989-11-28 | 1990-05-30 | $7700.00 | Window Closed / Lapsed |