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US4264562A
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Method of producing zeolite Y
Assignee: JM Huber Corp
•
Filing: 1979-12-07
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Granted: 1981-04-28
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Expires: 1999-12-07
Abstract
Abstract Zeolite X can be produced in a reaction mixture having a SiO2/Al2O3 molar ratio greater than 5:1. Zeolite A can be produced in a reaction mixture having a SiO2/Al2O3 molar ratio greater than 3:1. The resulting zeolite X and zeolite A have an average particle size below 2 microns. A combination of zeolite X and zeolite A can be made in the same reaction. Sand can be used as a source of silica in the production of zeolite Y by activating the sand with from 50 to 2000 ppm alumina.
Inventors
- 👤 John A. Kostinko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:18
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/36; D21H19/38; D21H19/40; A; A01; A01K; A01K1/00; A01K1/015; A61; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/26; A61Q; A61Q11/00; C; C01; C01B; C01B33/00; C01B33/20; C01B33/26; C01B33/28; C01B33/2807; C01B33/2815; C01B33/2823; C01B33/32; C08; C08K; C08K3/00; C08K3/34; C09; C09D; C09D7/00; C09D7/40; C09D7/42; A61K2800/00; A61K2800/40; A61K2800/41; A61K2800/412; Y; Y10; Y10S; Y10S423/00; Y10S423/21; Y10S423/24
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
210 words
A method of producing a crystalline zeolite Y, said method comprising the steps of: (a) dissolving sand in sodium hydroxide solution at a pressure of at least 100 psig and a temperature of at least 130° C. to produce a sodium silicate solution having a silica to sodium oxide molar oxide ratio of between 2.4:1 and 2.8:1; (b) activating said sodium silicate solution with from 50 to 2000 ppm alumina at a temperature of from 15° to 100° C. for at least 10 minutes; (c) forming a sodium aluminate solution; (d) adding said sodium aluminate solution to said activated sodium silicate solution so that all of the sodium aluminate solution is added within 30 seconds to produce a reaction mixture comprising a sodium silicate mother liquor and an amorphous sodium alumino silicate pigment, in total having a sodium oxide to silica molar ratio of between 0.5:1 and 1:1; a silica to alumina molar ratio of between 7:1 and 30:1; and a water to sodium oxide molar ratio of between 10:1 and 90:1; (e) heating said mixture to a temperature of from 80° to 120° C.; (f) reacting said mixture at a temperature of from 80° to 120° C. until crystalline zeolite Y is formed; and (g) recovering said zeolite Y.
Claim 2
Independent Claim
210 words
A method of producing a crystalline zeolite Y, said method comprising the steps of: (a) dissolving sand in sodium hydroxide solution at a pressure of at least 100 psig and a temperature of at least 130° C. to produce a sodium silicate solution having a silica to sodium oxide molar oxide ratio of between 2.4:1 and 2.8:1; (b) activating said sodium silicate solution with from 50 to 2000 ppm alumina at a temperature of from 15° to 100° C. for at least 10 minutes; (c) forming a sodium aluminate solution; (d) adding said sodium aluminate solution to said activated sodium silicate solution so that all of the sodium aluminate solution is added within 30 seconds to produce a reaction mixture comprising a sodium silicate mother liquor and an amorphous sodium alumino silicate pigment, in total having a sodium oxide to silica molar ratio of between 0.5:1 and 1:1; a silica to alumina molar ratio of between 7:1 and 30:1; and a water to sodium oxide molar ratio of between 10:1 and 90:1; (e) heating said mixture to a temperature of from 80° to 120° C.; (f) reacting said mixture at a temperature of from 80° to 120° C. until crystalline zeolite Y is formed; and (g) recovering said zeolite Y.
Claim 3
Dependent Claim
24 words
A method according to claim 1 wherein the amount of alumina used to activate said sodium silicate solution is from 100 to 600 ppm.
Claim 4
Dependent Claim
16 words
A method according to claim 1 wherein said sodium silicate solution is activated at room temperature.
Claim 5
Dependent Claim
49 words
A method according to claim 1 wherein the mixture in step (d) has a sodium oxide to silica molar ratio of between 0.5:1 and 1:1; a silica to alumina molar ratio of between 7:1 and 10:1; and a water to sodium oxide molar ratio of between 20:1 and 40:1.
Claim 6
Dependent Claim
20 words
A method according to claim 1 wherein said mixture is reacted at a temperature of from 80° to 100° C.
Claim 7
Independent Claim
230 words
A method of producing a crystalline zeolite Y, said method comprising the steps of: (a) dissolving sand in a sodium hydroxide solution at a pressure of about 140 psig heated to a temperature of at least 130° C. to produce a sodium silicate solution having a silica to sodium oxide molar ratio of between 2.4:1 and 2.8:1; (b) activating said sodium silicate solution with from 400 to 600 ppm alumina at room temperature for at least 10 minutes; (c) heating said sodium silicate solution to a temperature of about 90° C.; (d) forming a sodium aluminate solution; (e) heating said sodium aluminate solution to a temperature of about 90° C.; (f) adding said sodium aluminate solution to said activated sodium silicate solution so that all of the sodium aluminate solution is added within 30 seconds to produce a reaction mixture comprising a sodium silicate mother liquor and an amorphous sodium alumino silicate pigment, in total having a sodium oxide to silica molar ratio of between 0.5:1 and 1:1; a silica to alumina molar ratio of between 7:1 and 10:1; and a water to sodium oxide molar ratio of between 20:1 and 40:1; (g) heating said mixture to a temperature of from 80° to 100° C.; (h) reacting said mixture at a temperature of from 80° to 100° C. until crystalline zeolite Y is formed; and (i) recovering said zeolite Y.
Claim 8
Independent Claim
230 words
A method of producing a crystalline zeolite Y, said method comprising the steps of: (a) dissolving sand in a sodium hydroxide solution at a pressure of about 140 psig heated to a temperature of at least 130° C. to produce a sodium silicate solution having a silica to sodium oxide molar ratio of between 2.4:1 and 2.8:1; (b) activating said sodium silicate solution with from 400 to 600 ppm alumina at room temperature for at least 10 minutes; (c) heating said sodium silicate solution to a temperature of about 90° C.; (d) forming a sodium aluminate solution; (e) heating said sodium aluminate solution to a temperature of about 90° C.; (f) adding said sodium aluminate solution to said activated sodium silicate solution so that all of the sodium aluminate solution is added within 30 seconds to produce a reaction mixture comprising a sodium silicate mother liquor and an amorphous sodium alumino silicate pigment, in total having a sodium oxide to silica molar ratio of between 0.5:1 and 1:1; a silica to alumina molar ratio of between 7:1 and 10:1; and a water to sodium oxide molar ratio of between 20:1 and 40:1; (g) heating said mixture to a temperature of from 80° to 100° C.; (h) reacting said mixture at a temperature of from 80° to 100° C. until crystalline zeolite Y is formed; and (i) recovering said zeolite Y.
Claim 9
Dependent Claim
22 words
A method according to claim 6 wherein the sodium silicate solution has a silica to sodium oxide molar ratio of about 2.4:1.
Claim 10
Dependent Claim
22 words
A method according to claim 6 wherein the amount of alumina used to activate said sodium silicate solution is about 500 ppm.
Claim 11
Dependent Claim
43 words
A method according to claim 6 wherein the mixture in step (f) has a sodium oxide to silica molar ratio of about 0.56:1; a silica to alumina molar ratio of about 7.8:1; and a water to sodium oxide molar ratio of about 20:1.
Claim 12
Dependent Claim
18 words
A method according to claim 6 wherein said mixture is reacted at a temperature of about 100° C.
Claim 13
Independent Claim
209 words
A method of producing a crystalline zeolite Y, said method comprising the steps of: (a) dissolving sand in an 18% by weight sodium hydroxide solution at a pressure of about 140 psig heated to a temperature of at least 130° C. to produce a sodium silicate solution having a silica to sodium oxide molar ratio of about 2.4:1; (b) activating said sodium silicate solution with about 500 ppm alumina at room temperature for at least 10 minutes; (c) heating said sodium silicate solution to a temperature of about 90° C.; (d) forming a sodium aluminate solution; (e) heating said sodium aluminate solution to a temperature of about 90° C.; (f) adding said sodium aluminate solution to said activated sodium silicate solution within 30 seconds to produce a reaction mixture comprising a sodium silicate mother liquor and an amorphous sodium alumino silicate pigment, in total having a sodium oxide to silica molar ratio of about 0.56:1; a silica to alumina molar ratio of about 7.8:1; and a water to sodium oxide molar ratio of about 20:1; (g) heating said mixture to a temperature of about 90° C.; (h) reacting said mixture at a temperature of about 100° C. until crystalline zeolite Y is formed; and (i) recovering said zeolite Y.
Claim 14
Independent Claim
209 words
A method of producing a crystalline zeolite Y, said method comprising the steps of: (a) dissolving sand in an 18% by weight sodium hydroxide solution at a pressure of about 140 psig heated to a temperature of at least 130° C. to produce a sodium silicate solution having a silica to sodium oxide molar ratio of about 2.4:1; (b) activating said sodium silicate solution with about 500 ppm alumina at room temperature for at least 10 minutes; (c) heating said sodium silicate solution to a temperature of about 90° C.; (d) forming a sodium aluminate solution; (e) heating said sodium aluminate solution to a temperature of about 90° C.; (f) adding said sodium aluminate solution to said activated sodium silicate solution within 30 seconds to produce a reaction mixture comprising a sodium silicate mother liquor and an amorphous sodium alumino silicate pigment, in total having a sodium oxide to silica molar ratio of about 0.56:1; a silica to alumina molar ratio of about 7.8:1; and a water to sodium oxide molar ratio of about 20:1; (g) heating said mixture to a temperature of about 90° C.; (h) reacting said mixture at a temperature of about 100° C. until crystalline zeolite Y is formed; and (i) recovering said zeolite Y.
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) | 1984-04-27 | 1984-10-27 | 1985-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-27 | 1988-10-27 | 1989-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-27 | 1992-10-27 | 1993-04-28 | $7700.00 | Window Closed / Lapsed |