Patent US4499195A successfully refreshed from Google Patents.
US4499195A
Expired / Lapsed
US
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Thermally stable mixed oxide gels
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1982-12-23
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Granted: 1985-02-12
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Expires: 2002-12-23
Abstract
Abstract A process for cogelling a smectite with an inorganic metal oxide which is unstable with respect to retaining a high surface area, to produce a cogel of high surface area which has good retention of surface area at high temperatures. Suitable smectites for the practice of this invention are hectorite, chlorite, montmorillionite, beidellite, or admixtures of two or more of these materials with each other or with other materials, or the like. Exemplary of inorganic oxide gels suitable for the practice of this invention are the Group IV-B metal oxides, especially titanium oxide, and other metal oxides such as the oxides of thorium, uranium, silicon, aluminum, and the like.
Inventors
- 👤 Kenneth S. Wheelock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:02
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/12; B01J21/00; B01J21/16
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
60 words
A process for the preparation of an oxide co-gel of high surface area suitable for use as a catalyst support or catalyst at elevated temperatures without significant loss of surface area which comprises forming a co-gel consisting of a smectite and an oxide selected from titanium oxide, zirconium oxide, hafnium oxide, thorium oxide, uranium oxide, silicon oxide, and aluminum oxide.
Claim 2
Dependent Claim
60 words
A process for the preparation of an oxide co-gel of high surface area suitable for use as a catalyst support or catalyst at elevated temperatures without significant loss of surface area which comprises forming a co-gel consisting of a smectite and an oxide selected from titanium oxide, zirconium oxide, hafnium oxide, thorium oxide, uranium oxide, silicon oxide, and aluminum oxide.
Claim 3
Dependent Claim
45 words
A process for the preparation of a titanium oxide cogel of high surface area suitable for use as a catalyst support or catalyst at elevated tempertures without significant loss of surface area which comprises forming a co-gel consisting of a smectite and a titanium oxide.
Claim 4
Dependent Claim
45 words
A process for the preparation of a titanium oxide cogel of high surface area suitable for use as a catalyst support or catalyst at elevated tempertures without significant loss of surface area which comprises forming a co-gel consisting of a smectite and a titanium oxide.
Claim 5
Dependent Claim
44 words
The process of claim 2 wherein a titanium oxide gel is prepared by the acetolysis of a hydrocarbyl titanium compound in solution, to which water and the smectite as a gel are added to hydrolyze the reaction product and form a titanium oxide cogel.
Claim 6
Dependent Claim
16 words
The process of claim 2 wherein the smectite is hectorite, chlorite, montmorillionite, beidellite, or admixtures thereof.
Claim 7
Dependent Claim
14 words
As a composition of matter, a co-gel consisting of a smectite and titanium oxide.
Claim 8
Dependent Claim
14 words
As a composition of matter, a co-gel consisting of a smectite and titanium oxide.
Claim 9
Dependent Claim
16 words
The composition of claim 5 wherein the smectite is hectorite, chlorite, montmorillionite, beidellite, or admixture thereof.
Claim 10
Dependent Claim
32 words
As a composition of matter, a co-gel which consists of a smectite and an oxide selected from titanium oxide, zirconium oxide, hafnium oxide, thorium oxide, uranium oxide, silicon oxide and aluminum oxide.
Claim 11
Dependent Claim
32 words
As a composition of matter, a co-gel which consists of a smectite and an oxide selected from titanium oxide, zirconium oxide, hafnium oxide, thorium oxide, uranium oxide, silicon oxide and aluminum oxide.
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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) | 1988-02-12 | 1988-08-13 | 1989-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-12 | 1992-08-13 | 1993-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-12 | 1996-08-13 | 1997-02-12 | $7700.00 | Window Closed / Lapsed |