US4515901A
Expired / Lapsed
US
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Method of preparing pillared, interlayered clay catalyst using soluble carbohydrates
Assignee: Texaco Inc
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Filing: 1983-11-17
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Granted: 1985-05-07
•
Expires: 2003-11-17
Abstract
Abstract An interlayered pillared clay is formed by the steps of mixing a clay with a polar solvent, a soluble carbohydrate, and a soluble pillaring agent. The mixture is then heated to form the interlayered pillared clay. Useful clays are smectites such as montmorillonite.
Inventors
- 👤 Azza A. Elattar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:41
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/049
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
53 words
A method of preparing an interlayered pillared clay comprising the steps of mixing a clay with a polar solvent, a soluble carbohydrate, and a soluble pillaring agent; drying said mixture and then heating said mixture at a temperature between 100° to 600° C. to decompose said carbohydrate and form said interlayered pillared clay.
Claim 2
Independent Claim
53 words
A method of preparing an interlayered pillared clay comprising the steps of mixing a clay with a polar solvent, a soluble carbohydrate, and a soluble pillaring agent; drying said mixture and then heating said mixture at a temperature between 100° to 600° C. to decompose said carbohydrate and form said interlayered pillared clay.
Claim 3
Dependent Claim
12 words
The method of claim 1 wherein said clay comprises a smectite clay.
Claim 4
Dependent Claim
10 words
The method of claim 2 wherein said clay comprises montmorillonite.
Claim 5
Dependent Claim
14 words
The method of claim 1 wherein said carbohydrate comprises a soluble mono or oligosaccharide.
Claim 6
Dependent Claim
21 words
The method of claim 4 wherein said soluble mono or oligosaccharide is selected from the group consisting of xylose and sucrose.
Claim 7
Dependent Claim
15 words
The method of claim 1 wherein said pillaring agent comprises a metallic or organometallic compound.
Claim 8
Dependent Claim
22 words
The method of claim 6 wherein said metallic compound is selected from the compounds of boron, sillicon, aluminum, phosphorus, zinc and magnesium.
Claim 9
Dependent Claim
31 words
The method of claim 6 wherein said pillaring agent is selected from the group consisting of soluble siloxane disilanes, trisilanes, silicates, metal isopropoxides, soluble metal salts of acetate, carbonate, and oxalate.
Claim 10
Dependent Claim
29 words
The method of claim 8 wherein said pillaring agent is selected form the group consisting of boric acid, diethoxydisilane, hexaethoxydisilane, methysilicate, ethylsilicate, hexaethoxydisiloxane, other alkyl silicates, and aluminum isopropoxide.
Claim 11
Dependent Claim
11 words
The method of claim 1 wherein said polar solvent comprises water.
Claim 12
Dependent Claim
13 words
The method of claim 1 wherein said polar solvent comprises a liquid alcohol.
Claim 13
Dependent Claim
20 words
The method of claim 1 wherein said mixture is heated to a temperature between about 350° C. and 500° C.
Claim 14
Dependent Claim
20 words
The method of claim 1 wherein said carbohydrate comprises from about 1 to about 50% by weight of said mixture.
Claim 15
Dependent Claim
20 words
The method of claim 13 wherein said carbohydrate comprises from about 3 to about 5% by weight of said mixture.
Claim 16
Dependent Claim
21 words
The method of claim 1 wherein said pillaring agent comprises from about 20% to about 80% by weight of said mixture.
Claim 17
Dependent Claim
21 words
The method of claim 15 wherein said pillaring agent comprises from about 40 to about 70% by weight of said mixture.
Claim 18
Dependent Claim
20 words
The method of claim 1 and further comprising of step of loading said interlayered pillared clay with a catalytic metal.
Claim 19
Dependent Claim
25 words
The method of claim 17 wherein said catalytic metal is selected from the group consisting of Group VIII metals of the Periodic Table of Elements.
Claim 20
Dependent Claim
9 words
A catalyst formed by the method of claim 17.
Claim 21
Dependent Claim
9 words
A catalyst formed by the method of claim 12.
Claim 22
Independent Claim
58 words
A method of preparing an interlayered pillared clay comprising the steps of mixing a smectite clay with water or a liquid alcohol, a soluble mono or oligosaccharide, and a soluble pillaring agent, drying said mixture and then heating said mixture at a temperature between 100° to 600° C. to decompose said carbohydrate and form said interlayered pillared clay.
Claim 23
Independent Claim
58 words
A method of preparing an interlayered pillared clay comprising the steps of mixing a smectite clay with water or a liquid alcohol, a soluble mono or oligosaccharide, and a soluble pillaring agent, drying said mixture and then heating said mixture at a temperature between 100° to 600° C. to decompose said carbohydrate and form said interlayered pillared clay.
Claim 24
Dependent Claim
10 words
The method of claim 21 wherein said clay comprises montmorillonite.
Claim 25
Dependent Claim
21 words
The method of claim 21 wherein said soluble mono or oligosaccharide is selected from the group consisting of xylose and sucrose.
Claim 26
Dependent Claim
25 words
The method of claim 21 wherein said pillaring agent is selected from the group of boric acid, hexaethoxydisiloxane, diethoxydisilane, hexaethyoxydisilane, methylsilicate, ethylsilicate and aluminum isopropoxide.
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) | 1988-05-06 | 1988-11-05 | 1989-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-06 | 1992-11-05 | 1993-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-06 | 1996-11-05 | 1997-05-07 | $7700.00 | Window Closed / Lapsed |