CA1059107A - Process for preparing zeolite y - Google Patents
Process for preparing zeolite yInfo
- Publication number
- CA1059107A CA1059107A CA210,625A CA210625A CA1059107A CA 1059107 A CA1059107 A CA 1059107A CA 210625 A CA210625 A CA 210625A CA 1059107 A CA1059107 A CA 1059107A
- Authority
- CA
- Canada
- Prior art keywords
- alumina
- mixture
- temperature
- range
- zeolite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
PROCESS FOR PREPARING ZEOLITE Y
ABSTRACT OF DISCLOSURE
Zeolite Y is prepared by an improved hydro-thermal process which utilizes certain sources of alumina and a reactive solid amorphous silica dispersed in water only, in conjunction with high-shear mixing of these re-actants. Control of the temperature of the alumina reactant and absence of caustic in the silica dispersion are found to be beneficial in increasing the cyrstalli-zation rate. Also, certain reactant aluminas may be used in the form of a slurry of alumina particles in aqueous caustic.
S P E C I F I C A T I O N
ABSTRACT OF DISCLOSURE
Zeolite Y is prepared by an improved hydro-thermal process which utilizes certain sources of alumina and a reactive solid amorphous silica dispersed in water only, in conjunction with high-shear mixing of these re-actants. Control of the temperature of the alumina reactant and absence of caustic in the silica dispersion are found to be beneficial in increasing the cyrstalli-zation rate. Also, certain reactant aluminas may be used in the form of a slurry of alumina particles in aqueous caustic.
S P E C I F I C A T I O N
Claims (3)
1. Process for preparing Type Y crystalline zeolite, which comprises forming an aqueous aluminosilicate reaction mixture having a uniform composition, expressed in terms of oxide-mole ratios, within the range Na2O/SiO2 = 0.36 - 0.46 SiO2/Al2O3 = 8 - 10 H2O/Na2O = 35 - 45, said composition being formed by intensively admixing under high-shear conditions (a) a substantially homogeneous and essentially alkali-free water-medium dispersion of a reactive solid amorphous silica having a particle size of less than one micron formed under high-shear conditions, and (b) a mixture of alumina, water and sodium hydroxide wherein the molal concentration with respect to alumina as Al(OH)3 is between about 4 m and 5.5 m and the conc-entration with respect to NaOH is between about 16 m and 22 m, wherein the temperature of said mixture (b) is between 80° and 95°C
at the time of said admixing, maintaining the composition thus formed for a period of from about 1 to 24 hours at temperature of within the range of 20° to 110°C and recovering the zeolite Y
cyrstals produced thereby.
at the time of said admixing, maintaining the composition thus formed for a period of from about 1 to 24 hours at temperature of within the range of 20° to 110°C and recovering the zeolite Y
cyrstals produced thereby.
2. Process for preparing Type Y crystalline zeolite, which comprises forming an aqueous aluminosilicate reaction mixture having a uniform composition, expressed in terms of oxide-mole ratios, of Na2O/SiO2 = about 0.4 SiO2/Al2O3 = about 10 H2O/Na2O = about 40, said composition being formed by intensively admixing under high-shear conditions (a) a substantially homogeneous alkali-free water-medium dispersion of a reactive solid amorphous silica having a particle size of less than one micron formed under high-shear conditions, and (b) a mixture of alumina, water and sodium hydro-xide wherein the molal concentration with respect to alumina as Al(OH)3 i about 5.4 m and the concentration with respect to NaOH
is about 21 m, wherein the temperature of said mixture (b) is between 85° and 90°C at the time of said admixing, maintaining thereaction mixture thus formed for a period of about 12 hours ambient temperature, therafter raising the temperature to about 100°C, maintaining said temperature for about 8 hours and recovering the zeolite Y crystals produced thereby.
is about 21 m, wherein the temperature of said mixture (b) is between 85° and 90°C at the time of said admixing, maintaining thereaction mixture thus formed for a period of about 12 hours ambient temperature, therafter raising the temperature to about 100°C, maintaining said temperature for about 8 hours and recovering the zeolite Y crystals produced thereby.
3. A process as in Claim 1, wherein the alumina is incor-porated in mixture (b) in the form of a slurry of solid alumina particles, said particles having a water content within the range of 21-40 wt.% and the Al2O3 content within the range of 60-77 wt.%, a particle size range between 0.04 and 2 microns and an impurity content of not more than 2 wt. %.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US40365373A | 1973-10-04 | 1973-10-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1059107A true CA1059107A (en) | 1979-07-24 |
Family
ID=23596544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA210,625A Expired CA1059107A (en) | 1973-10-04 | 1974-10-02 | Process for preparing zeolite y |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1059107A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0435625A3 (en) * | 1989-12-29 | 1992-01-02 | Mobil Oil Corporation | Synthesis of faujasite |
-
1974
- 1974-10-02 CA CA210,625A patent/CA1059107A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0435625A3 (en) * | 1989-12-29 | 1992-01-02 | Mobil Oil Corporation | Synthesis of faujasite |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3310373A (en) | Method for producing crystalline aluminosilicates | |
| US3313594A (en) | Method for producing crystalline aluminosilicate zeolitic particles of uniform size | |
| US2979381A (en) | Process for producing zeolite x | |
| US3329627A (en) | Synthetic zeolites | |
| US3522066A (en) | Process for preparing aqueous mixed lithium and sodium (and/or potassium) silicate solutions | |
| US3186957A (en) | Method of preparing a nickel oxidealumina catalyst composition and the product thereof | |
| US3443890A (en) | Process for the production of calcium carbonate | |
| US2549549A (en) | Process for producing aluminum trihydrate | |
| GB1476957A (en) | Process for the production of zeolitic molecular sieves | |
| GB1161974A (en) | Synthetic Crystalline Aluminosilicate and method of preparing the same | |
| EP0216312B1 (en) | Process for preparation of synthetic mordenite molded body | |
| CN101745365B (en) | Preparation method of 13X molecular sieve with high adsorption property | |
| GB1430421A (en) | Hydrocarbon cracking catalyst composition containing a faujasite | |
| US3755538A (en) | Preparation of zeolites | |
| GB1342977A (en) | Process for preparing attrition resistant zeolitc particles | |
| US4175059A (en) | Method of preparing a novel platelet-type crystalline form of synthetic faujasite | |
| US2996369A (en) | Zirconium oxide and process of making the same | |
| CA1059107A (en) | Process for preparing zeolite y | |
| US3704147A (en) | Fibrous inorganic materials | |
| JP4194655B2 (en) | Calcium borate and method for producing the same | |
| US2830090A (en) | Production of alcohols and ethers | |
| US2982612A (en) | Process for producing sodium zeolite a | |
| GB1337752A (en) | Zeolite | |
| GB1560223A (en) | Synethesis of favjasite | |
| GB1223592A (en) | Process for the preparation of aluminosilicate ion exchange materials |