US4400306A
Expired / Lapsed
US
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Process for the preparation of fluidizable catalysts
Assignee: Standard Oil Co
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Filing: 1982-06-28
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Granted: 1983-08-23
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Expires: 2002-06-28
Abstract
Abstract A process is provided for preparing supported catalysts by impregnating a pre-formed support with a solution of a metal alkoxide and contacting the impregnated support with a solution of at least one additional catalyst component. This process is particularly suitable for forming attrition resistant fluidizable catalysts. Catalysts prepared by this method are useful in various reaction processes, and may be utilized in oxidation processes such as the production of maleic anhydride from 4 carbon atom hydrocarbons.
Inventors
- 👤 Dennis E. Dria
- 👤 Noel J. Bremer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:02
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/25; C07C51/252; B; B01; B01J; B01J23/00; B01J23/002; B01J27/00; B01J27/14; B01J27/186; B01J27/195; B01J27/198; B01J37/00; B01J37/02; B01J37/0201; B01J37/0209; C07C51/215; B01J2523/00
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
65 words
A process for the preparation of a supported catalyst comprising impregnating a pre-formed catalyst support with a solution of an alkoxide of at least one metal selected from vanadium, molybdenum, antimony, copper, niobium, tantalum, zinc, zirconium, boron and mixtures thereof, contacting the impregnated support with a solution of at least one additional catalyst component to form the catalyst in situ, and drying the catalyst-containing support.
Claim 2
Dependent Claim
65 words
A process for the preparation of a supported catalyst comprising impregnating a pre-formed catalyst support with a solution of an alkoxide of at least one metal selected from vanadium, molybdenum, antimony, copper, niobium, tantalum, zinc, zirconium, boron and mixtures thereof, contacting the impregnated support with a solution of at least one additional catalyst component to form the catalyst in situ, and drying the catalyst-containing support.
Claim 3
Dependent Claim
11 words
A process as in claim 1 wherein said support is fluidizable.
Claim 4
Dependent Claim
24 words
A process as in claim 2 wherein said support has a particle size within the range of about 20 microns to about 300 microns.
Claim 5
Dependent Claim
52 words
A process as in claim 1 or 2 wherein the additional catalyst components are selected from alkali and alkaline earth metals, U, Th, Ti, Hf, Cr, W, Mn, Re, Fe, Co, Ni, the platinum group metals, Ag, Au, Cd, Tl, Sn, Pb, P, As, Bi, the rare earth metals, and mixtures thereof.
Claim 6
Dependent Claim
24 words
A process as in claim 1 or 2 wherein said alkoxide is selected from methoxide, ethoxide, propoxide, isopropoxide, t-butoxide, n-butoxide, isobutoxide and mixtures thereof.
Claim 7
Dependent Claim
54 words
A process for the preparation of a supported catalyst containing the mixed oxides of vanadium and phosphorus comprising impregnating a preformed catalyst support with a first solution of a vanadyl alkoxide, contacting the impregnated support with a second solution of the phosphorus component to form the catalyst in situ, drying the catalyst containing support.
Claim 8
Dependent Claim
54 words
A process for the preparation of a supported catalyst containing the mixed oxides of vanadium and phosphorus comprising impregnating a preformed catalyst support with a first solution of a vanadyl alkoxide, contacting the impregnated support with a second solution of the phosphorus component to form the catalyst in situ, drying the catalyst containing support.
Claim 9
Dependent Claim
11 words
A process as in claim 6 wherein said support is fluidizable.
Claim 10
Dependent Claim
56 words
A process as in claim 6 wherein said first or second solution contains at least one additional catalyst component selected from the alkali metals, the alkaline earth metals, Ti, Cr, W, Mn, Th, U, Co, Fe, Hf, Ni, As, Te, Bi, Sn, Ge, Cd, lanthanides, Mo, Cu, B, Sb, Ta, Nb, Zn, Zr and mixtures thereof.
Claim 11
Dependent Claim
34 words
A process as in claim 6 wherein said catalyst support is additionally impregnated with an alkoxide of at least one metal selected from Mo, Cu, B, Sb, Ta, Nb, Zn, Zr and mixtures thereof.
Claim 12
Dependent Claim
33 words
A process as in claim 6 wherein said first or second solution comprises an organic liquid capable of effecting reduction of at least a portion of the vanadium to a +4 valence state.
Claim 13
Dependent Claim
22 words
A process as in claim 6 wherein said alkoxide is selected from methoxide, ethoxide, propoxide, isopropoxide, t-butoxide, n-butoxide, isobutoxide and mixtures thereof.
Claim 14
Dependent Claim
15 words
A process as in claim 6 wherein said alkoxide is capable of autoreducing the vanadium.
Claim 15
Dependent Claim
66 words
A supported catalyst containing at least one metal component prepared by impregnating a pre-formed catalyst support with a solution of an alkoxide of at least one metal selected from vanadium, molybdenum, antimony, copper, niobium, tantalum, zinc, zirconium, boron and mixtures thereof, contacting the impregnated support with a solution of at least one additional catalyst component to form the catalyst in situ, and drying the catalyst-containing support.
Claim 16
Dependent Claim
66 words
A supported catalyst containing at least one metal component prepared by impregnating a pre-formed catalyst support with a solution of an alkoxide of at least one metal selected from vanadium, molybdenum, antimony, copper, niobium, tantalum, zinc, zirconium, boron and mixtures thereof, contacting the impregnated support with a solution of at least one additional catalyst component to form the catalyst in situ, and drying the catalyst-containing support.
Claim 17
Dependent Claim
47 words
A supported catalyst containing the mixed oxides of vanadium and phosphorus prepared by impregnating a preformed catalyst support with a solution of a vanadyl alkoxide, contacting the impregnated support with a solution of the phosphorus component to form the catalyst in situ, drying the catalyst containing support.
Claim 18
Dependent Claim
47 words
A supported catalyst containing the mixed oxides of vanadium and phosphorus prepared by impregnating a preformed catalyst support with a solution of a vanadyl alkoxide, contacting the impregnated support with a solution of the phosphorus component to form the catalyst in situ, drying the catalyst containing support.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-22 | 1987-02-21 | 1987-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-22 | 1991-02-21 | 1991-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-22 | 1995-02-21 | 1995-08-23 | $7700.00 | Window Closed / Lapsed |