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US3816342A
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Process for preparing a crystalline aluminosilicate zeolite
Assignee: Mobil Oil AS
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Filing: 1968-07-31
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Granted: 1974-06-11
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Expires: 1988-07-31
Abstract
Abstract A method is provided for fluid catalytic cracking of hydrocarbons characterized by a composite catalyst of highly active crystalline aluminosilicate and a relatively less active matrix material.
Inventors
- 👤 C Plank
- 👤 E Rosinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:15
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18; B01J29/00; B01J29/04; B01J29/06; B01J29/08; B01J29/085; B01J29/087; B01J29/088; C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05; B01J2229/00; B01J2229/30; B01J2229/42
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
35 words
The process of claim 1 wherein the matrix material is at least one of a member selected from the group consisting of clay, alumina, a hydrated metal oxide, silica gel, alumina gel, and silica-alumina gel.
Claim 2
Dependent Claim
17 words
The process of claim 1 wherein the matrix is a composite of clay and inorganic oxide gel.
Claim 3
Dependent Claim
20 words
The process of claim 1 in which the first exchange is effected with a solution containing rare earth metal cation.
Claim 4
Dependent Claim
13 words
The process of claim 1 in which the zeolite is a synthetic faujasite.
Claim 5
Dependent Claim
11 words
The process of claim 5 wherein the zeolite is type X.
Claim 6
Dependent Claim
11 words
The process of claim 5 wherein the zeolite is type Y.
Claim 7
Dependent Claim
11 words
The process of claim 1 wherein the original cation is sodium.
Claim 8
Dependent Claim
21 words
The process of claim 1 wherein the heating is performed in an atmosphere containing from about 5 to 100 percent steam.
Claim 9
Dependent Claim
106 words
A process for preparing a zeolite catalyst material characterized by a stable structure in which crystallinity loss is minimized during subsequent processing steps, such as rapid drying as in spray drying, wet processing, steaming and aging which comprises: a. exchanging the zeolite with a solution of a salt of at least one desired metal cation to remove at least 75 percent of the original cation content, b. drying and heating the exchanged zeolite at a temperature of 500* to 1,600*F, c. compositing the heated zeolite with porous amorphous matrix material and subjecting the resulting composite to ion exchange and d. washing, drying and recovering the product.
Claim 10
Dependent Claim
15 words
A method according to claim 10 wherein the final exchange is with an ammonium salt.
Claim 11
Dependent Claim
16 words
A method according to claim 10 wherein the porous amorphous matrix material is a silica hydrogel.
Claim 12
Dependent Claim
14 words
A method according to claim 12 wherein the porous amorphous matrix material is silica-alumina.
Claim 13
Dependent Claim
18 words
A method according to claim 12 wherein the original cation of the zeolite is an alkali metal cation.
Claim 14
Dependent Claim
68 words
A process for preparing a crystalline aluminosilicate zeolite comprising the steps of: a. exchanging the crystalline aluminosilicate zeolite with a solution containing rare earth cations to at least partially replace the original cation; b. heating the exchanged zeolite at a temperature from 500*F to 1600*F; c. compositing the resulting zeolite with a porous matrix material; and d. contacting the resulting composite with a solution containing rare earth cations.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |