US3609103A
Expired / Lapsed
US
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Hydrocarbon conversion catalysts containing dispersed clay
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1969-11-28
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Granted: 1971-09-28
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Expires: 1989-11-28
Abstract
Abstract The attrition resistance of hydrocarbon conversion catalysts comprising a crystalline aluminosilicate zeolite distributed throughout a clay-containing matrix, preferably a matrix comprising a siliceous gel and a clay, is improved by first dispersing the clay to form particles having a prescribed size distribution prior to its combination with the other two components. The improved product and its use in hydrocarbon conversion reactions is described.
Inventors
- 👤 Elroy M Gladrow
- 👤 Warren M Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:51
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/095; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/061; B01J29/08; B01J29/084; C10G11/00; C10G11/02; C10G11/04; C10G11/05; C10G47/00; C10G47/02; C10G47/10; C10G47/12; C10G47/16; B01J2229/00; B01J2229/30; B01J2229/42
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
11 words
The composition of claim 1 which additionally comprises a siliceous gel.
Claim 2
Dependent Claim
20 words
The composition of claim 1, wherein said zeolite has uniform pore openings of about 7 to about 13 Angstrom units.
Claim 3
Dependent Claim
20 words
The composition of claim 2, wherein said zeolite has uniform pore openings of about 7 to about 13 Angstrom units.
Claim 4
Dependent Claim
10 words
The composition of claim 1, wherein said clay is kaolin.
Claim 5
Dependent Claim
47 words
The composition of claim 2, wherein the degree of subdivision of said clay is sufficient to produce the following particle size distribution: % of Total Particles Particle Size (Microns) 50 to 90 0.05 to 0.3 10 to 40 0.3 to 0.5 0 to 10 0.5 to 1.0
Claim 6
Dependent Claim
22 words
The composition of claim 2, wherein 70 to 90 percent of the clay particles have a particle size less than 0.3 microns.
Claim 7
Dependent Claim
39 words
The composition of claim 2, wherein said siliceous gel is a cogel of silica and an oxide of at least one metal selected from the group consisting of metals of Groups II-A III-A and IV-B of the Periodic Table.
Claim 8
Dependent Claim
11 words
The composition of claim 8, wherein said siliceous gel is silica-alumina.
Claim 9
Dependent Claim
19 words
The composition of claim 1, wherein said composition contains about 2 to 25 weight percent of said crystalline zeolite.
Claim 10
Dependent Claim
36 words
The composition of claim 2, wherein said composition contains about 2 to 25 weight percent of said zeolite, about 25 to 78 weight percent of said siliceous gel, and about 20 to 50 weight percent clay.
Claim 11
Dependent Claim
68 words
In the method of preparing catalyst compositions comprising crystalline aluminosilicate zeolite and clay, the improved means for increasing the attrition resistance of said composition which comprises dispersing said clay into a highly subdivided state prior to its combination with said zeolite, the degree of subdivision being such as to cause about 40 to 95 percent of the clay particles to have a particle size less than 0.3 microns.
Claim 12
Dependent Claim
26 words
The improved means of claim 12, wherein a dispersing agent capable of achieving said state of subdivision is added to an aqueous slurry of said clay.
Claim 13
Dependent Claim
13 words
The improved means of claim 13, wherein said dispersing agent is sodium silicate.
Claim 14
Dependent Claim
15 words
The improved means of claim 12, wherein said catalyst composition additionally comprises a siliceous gel.
Claim 15
Dependent Claim
11 words
The improved means of claim 12, wherein said clay is kaolin.
Claim 16
Dependent Claim
40 words
The improved means of claim 12, wherein said degree of subdivision is as follows: % of Total Particles Particle Size (Microns) 50 to 90 0.05 to 0.3 10 to 40 0.3 to 0.5 0 to 10 tn 0.5 to 1.0
Claim 17
Independent Claim
53 words
A method for increasing the attrition resistance of catalyst compositions comprising crystalline aluminosilicate zeolites and clay which comprises dispersing said clay into a highly subdivided state prior to its combination with said zeolite utilizing a dispersing agent selected from the group consisting of alkali metal phosphates, alkali metal carbonates and alkali metal silicates.
Claim 18
Dependent Claim
12 words
The method of claim 18 wherein said dispersing agent is sodium silicate.
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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |