US4520122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Immobilization of organic species on refractory inorganic oxides
Assignee: Honeywell UOP LLC
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Filing: 1983-12-05
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Granted: 1985-05-28
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Expires: 2003-12-05
Abstract
Abstract A broad variety of modified inorganic oxides may be prepared by surface-metallating the oxide with a metal tetrahalide followed by displacement of a halogen bonded to the metal by a nucleophilic organic functional group. The results are organic moieties coating the surface of the oxide by being covalently bonded to a metal which, in turn, is covalently bonded to an oxygen originally associated with a surface hydroxyl of the inorganic oxide.
Inventors
- 👤 Blaise J. Arena
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:06
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/02; B01J37/0201; B01J37/0209; B01J20/00; B01J20/02; B01J20/0203; B01J20/0211; B01J20/0274; B01J20/0288; B01J20/06; B01J20/08; B01J20/10; B01J20/103; B01J20/28; B01J20/28014; B01J20/28016; B01J20/28019; B01J20/281; B01J20/286; B01J20/30; B01J20/3071; B01J20/32; B01J20/3202; B01J20/3204; B01J20/3214; B01J20/3217; B01J20/3219; B01J20/3231; B01J20/3234; B01J20/3236; B01J20/3242; B01J20/3244; B01J20/3246; B01J20/3248; B01J20/3251; B01J20/3253; B01J20/3289; B01J31/00; B01J31/16; B01J31/1616; B01J31/1625; B01J2220/00; B01J2220/50; B01J2220/54
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
158 words
A method of preparing a modified refractory inorganic oxide comprising reacting the surface hydroxyl groups of a porous refractory inorganic oxide selected from the group consisting of alumina, silica, thoria, titania, magnesia, and combinations thereof with a tetrahalide of an element selected from the group consisting of titanium, zirconium, hafnium, vanadium, tantalum, niobium, germanium, tin, lead, and combinations thereof so as to produce a surface-metallated inorganic oxide, removing excess and unreacted metal tetrahalide, heating the metal inorganic oxide at a temperature from about 80° to about 200° C. in an inert atmosphere for a time sufficient to volatilize any remaining unreacted metal tetrahalide, reacting the resulting material with an organic reagent having at least one functional group selected from the group consisting of hydroxyl, amino, sulfhydryl, and phosphino moieties, or with RY where R is a hydrocarbyl moiety and Y is an alkali metal, removing excess adhering but unreacted reagent, and recovering the resulting modified refractory inorganic oxide.
Claim 2
Independent Claim
158 words
A method of preparing a modified refractory inorganic oxide comprising reacting the surface hydroxyl groups of a porous refractory inorganic oxide selected from the group consisting of alumina, silica, thoria, titania, magnesia, and combinations thereof with a tetrahalide of an element selected from the group consisting of titanium, zirconium, hafnium, vanadium, tantalum, niobium, germanium, tin, lead, and combinations thereof so as to produce a surface-metallated inorganic oxide, removing excess and unreacted metal tetrahalide, heating the metal inorganic oxide at a temperature from about 80° to about 200° C. in an inert atmosphere for a time sufficient to volatilize any remaining unreacted metal tetrahalide, reacting the resulting material with an organic reagent having at least one functional group selected from the group consisting of hydroxyl, amino, sulfhydryl, and phosphino moieties, or with RY where R is a hydrocarbyl moiety and Y is an alkali metal, removing excess adhering but unreacted reagent, and recovering the resulting modified refractory inorganic oxide.
Claim 3
Dependent Claim
11 words
The method of claim 1 where the inorganic oxide is alumina.
Claim 4
Dependent Claim
11 words
The method of claim 1 where the inorganic oxide is silica.
Claim 5
Dependent Claim
11 words
The method of claim 1 where the tetrahalide is a tetrachloride.
Claim 6
Dependent Claim
10 words
The method of claim 1 where the metal is titanium.
Claim 7
Dependent Claim
10 words
The method of claim 1 where the metal is zirconium.
Claim 8
Dependent Claim
10 words
The method of claim 1 where the metal is vanadium.
Claim 9
Dependent Claim
12 words
The method fo claim 1 where the reagent has a hydroxyl group.
Claim 10
Dependent Claim
17 words
The method of claim 8 where the reagent is a hydroxy carboxylic acid or a hydroxy amine.
Claim 11
Dependent Claim
12 words
The method of claim 1 where the reagent has an amino group.
Claim 12
Dependent Claim
16 words
The method of claim 10 where the reagent is an amino carboxylic acid or a polyamine.
Claim 13
Dependent Claim
13 words
The method of claim 1 where RY is an alkyl or aryl lithium.
Claim 14
Dependent Claim
9 words
The product made by the method of claim 1.
Claim 15
Dependent Claim
11 words
The product of claim 13 where the inorganic oxide is alumina.
Claim 16
Dependent Claim
11 words
The product of claim 13 where the inorganic oxide is silica.
Claim 17
Dependent Claim
16 words
The product of claim 13 where the tetrahalide is the tetrachloride of titanium, zirconium, or vanadium.
Claim 18
Dependent Claim
12 words
The product of claim 13 where the reagent has an hydroxyl group.
Claim 19
Dependent Claim
12 words
The product of claim 13 where the reagent has an amino group.
Claim 20
Dependent Claim
20 words
The product of claim 13 where the reagent is a hydroxy carboxylic acid, amino carboxylic acid, hydroxy amine, or polyamine.
Claim 21
Dependent Claim
13 words
The product of claim 13 where RY is an alkyl or aryl lithium.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1988-05-27 | 1988-11-26 | 1989-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-27 | 1992-11-26 | 1993-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-27 | 1996-11-26 | 1997-05-28 | $7700.00 | Window Closed / Lapsed |