CN105565332A - Preparation method of Beta/SBA-15 composite molecular sieve - Google Patents
Preparation method of Beta/SBA-15 composite molecular sieve Download PDFInfo
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- CN105565332A CN105565332A CN201510777913.9A CN201510777913A CN105565332A CN 105565332 A CN105565332 A CN 105565332A CN 201510777913 A CN201510777913 A CN 201510777913A CN 105565332 A CN105565332 A CN 105565332A
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- molecular sieve
- sba
- beta
- composite molecular
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B39/00—Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
The invention relates to a preparation method of a composite molecular sieve, in particular to a preparation method of Beta/SBA-15 composite molecular sieve, comprising the following steps: (1), weighing 4 g of P123, and adding into 98.0 g of deionized water; (2), stirring at 42 DEG C for 1 h until full dissolution; (3), adding hydrochloric acid of certain concentration for adjusting to an acid environment, and stirring for 2 h; (4), adding a Beta molecular sieve, and continuing stirring for 2 h; (5), dropwise adding 8.48 g of TEOS (tetraethyl orthosilicate) slowly with a pipette, and stirring for 24 h; (6), pouring in a polytetrafluoroethylene-lined reactor; (7), standing and crystallizing in an oven at 110 DEG C for 48 h; (8), cooling and suction filtering, and drying for 3 h; (9), calcining at 500 DEG C for 5 h to obtain the Beta/SBA-15 composite molecular sieve. The Beta/SBA-15 molecular sieve described in the invention has good long-range orderliness, good cooperativity and good stability.
Description
Technical field
The present invention relates to a kind of preparation method of composite molecular screen.
Background technology
Micro porous molecular sieve has the advantages such as acid strong, good hydrothermal stability, but the aperture of micro porous molecular sieve is little, limits its application in macromolecular reaction.Mesopore molecular sieve aperture is large, be conducive to entering and the diffusion of product of macromolecular reaction thing, but its acidity is weak, hydrothermal stability is poor.Composite molecular screen combines micropore and the advantage of the lonely L molecular sieve that is situated between, and makes both have complementary advantages, and is the new catalytic material that a kind of acidity is strong, have the lonely L footpath of adjustable gradient, gets more and more people's extensive concerning in recent years.Li Meng etc. for silicon and aluminum source, have synthesized the Z-SBA-15 composite molecular screen that hole wall contains secondary building units of zeolite with ZSM-5 molecular sieve degradation solution.SBA-15 molecular sieve be impregnated in obtained β/SBA-15 composite molecular screen in beta-molecular sieve precursor solution by Lin Sen etc., characterization result shows, the secondary structure unit of beta-molecular sieve precursor enters SBA-15 molecular sieve pore passage, and this composite molecular screen has very high activity and very long life-span in alkylated reaction.
Summary of the invention
The present invention proposes a kind of preparation method of β/SBA-15 composite molecular screen.
The preparation method of β/SBA-15 composite molecular screen of the present invention, comprises the following steps: the P123 that (1) takes 4g joins in 98.0g deionized water; (2) at 42 DEG C, 1h is stirred to dissolving completely; (3) add certain density hydrochloric acid and be adjusted to sour environment stirring 2h; (4) then add beta-molecular sieve, continue to stir 2h; (5) slowly drip 8.48gTEOS with transfer pipet, stir 24h, (6) are poured in the reactor of inner liner polytetrafluoroethylene, and (7) leave standstill crystallization 48h in an oven at 110 DEG C; (8) cool suction filtration, dry 3h, (9) are roasting 5h at 500 DEG C, obtains β/SBA-15 composite molecular screen.
The preparation method of β/SBA-15 composite molecular screen of the present invention, has good long-range order and good synergetic property, good stability.
Embodiment:
The preparation method of β/SBA-15 composite molecular screen of the present invention, comprises the following steps: the P123 that (1) takes 4g joins in 98.0g deionized water; (2) at 42 DEG C, 1h is stirred to dissolving completely; (3) add certain density hydrochloric acid and be adjusted to sour environment stirring 2h; (4) then add beta-molecular sieve, continue to stir 2h; (5) slowly drip 8.48gTEOS with transfer pipet, stir 24h, (6) are poured in the reactor of inner liner polytetrafluoroethylene, and (7) leave standstill crystallization 48h in an oven at 110 DEG C; (8) cool suction filtration, dry 3h, (9) are roasting 5h at 500 DEG C, obtains β/SBA-15 composite molecular screen.
Claims (1)
1. the preparation method of β/SBA-15 composite molecular screen, is characterized in that comprising the following steps: the P123 that (1) takes 4g joins in 98.0g deionized water; (2) at 42 DEG C, 1h is stirred to dissolving completely; (3) add certain density hydrochloric acid and be adjusted to sour environment stirring 2h; (4) then add beta-molecular sieve, continue to stir 2h; (5) slowly drip 8.48gTEOS with transfer pipet, stir 24h, (6) are poured in the reactor of inner liner polytetrafluoroethylene, and (7) leave standstill crystallization 48h in an oven at 110 DEG C; (8) cool suction filtration, dry 3h, (9) are roasting 5h at 500 DEG C, obtains β/SBA-15 composite molecular screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510777913.9A CN105565332A (en) | 2015-11-16 | 2015-11-16 | Preparation method of Beta/SBA-15 composite molecular sieve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510777913.9A CN105565332A (en) | 2015-11-16 | 2015-11-16 | Preparation method of Beta/SBA-15 composite molecular sieve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105565332A true CN105565332A (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510777913.9A Pending CN105565332A (en) | 2015-11-16 | 2015-11-16 | Preparation method of Beta/SBA-15 composite molecular sieve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113023745A (en) * | 2019-12-25 | 2021-06-25 | 中国石油化工股份有限公司 | Beta/Al-SBA-15 composite molecular sieve and preparation method and application thereof |
-
2015
- 2015-11-16 CN CN201510777913.9A patent/CN105565332A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113023745A (en) * | 2019-12-25 | 2021-06-25 | 中国石油化工股份有限公司 | Beta/Al-SBA-15 composite molecular sieve and preparation method and application thereof |
| CN113023745B (en) * | 2019-12-25 | 2022-08-12 | 中国石油化工股份有限公司 | Beta/Al-SBA-15 composite molecular sieve and preparation method and application thereof |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160511 |
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| WD01 | Invention patent application deemed withdrawn after publication |