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SSZ-13/SSZ-39 composite structure molecular sieve as well as synthesis method thereof

A technology of SSZ-39 and composite structure, applied in molecular sieve catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve unrelated problems and achieve good stability and good technical effects

Active Publication Date: 2019-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The second technical problem to be solved by the present invention is that the prior art does not involve the synthesis method of the above-mentioned SSZ-13 / SSZ-39 composite structure molecular sieve, and a new preparation method of SSZ-13 / SSZ-39 composite structure molecular sieve is provided

Method used

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  • SSZ-13/SSZ-39 composite structure molecular sieve as well as synthesis method thereof
  • SSZ-13/SSZ-39 composite structure molecular sieve as well as synthesis method thereof
  • SSZ-13/SSZ-39 composite structure molecular sieve as well as synthesis method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Synthesis of SSZ-13 / SSZ-39 Composite Molecular Sieves

[0041] 10.58g of silica sol [SiO 2 , 40wt.%, 0.07mol] was dissolved in 60.74mL of water, mixed to make solution S, and then the solution was divided into two parts by mass, 75% and 25%, respectively, and recorded as solution S c and solution S a , 3.27g sodium aluminate [NaAlO 2 , purity ≥98wt.%, 0.04mol], 15.78g amantadine [TMAdaOH, purity ≥98wt.%, 0.10mol] into S c solution, stirred for 0.5h to obtain solution S c '; 1.73g of sodium aluminate [NaAlO 2 , purity≥98wt.%,, 0.02mol] and 0.62g of USY molecular sieve, 0.23g of Beta molecular sieve and 8.19g of N,N-dimethyl-2-ethylpiperidinium bromide [DMEPBr, 0.06mol] and 3.13 g of 1-methyl-4-aminopiperidine [MAP, 0.04mol] was put into S a In the solution, after fully stirring for 0.2h, add 3.64g of sodium hydroxide [NaOH, 0.09mol] into the above solution to adjust the pH value of the solution between 8 and 9, and continue stirring for 0.3h to obtain solution S a...

Embodiment 2

[0043] Synthesis of SSZ-13 / SSZ-39 Composite Molecular Sieves

[0044] 4414.85g of silica sol [SiO 2 , 60wt.%, 44.15mol] was dissolved in 34651.86mL of water, mixed to make solution S, and then the solution was divided into two parts by mass, 35% and 65%, respectively, and recorded as solution S c and solution Sa , 995.99g of aluminum sulfate [Al 2 (SO 4 ) 3 18H 2 O, purity ≥98wt.%, 1.49mol], 530.64g choline [Choline, 50wt.%, 2.19mol] and 119.39g amantadine [TMAdaOH, purity ≥98wt.%, 0.37mol] were put into S c solution, stirred for 3.5h to obtain solution S c '; 1004.01g of aluminum sulfate [Al 2 (SO 4 ) 3 18H 2 O, purity ≥98wt.%, 1.51mol] and 99.68g of USY molecular sieves, 50.55g of MOR molecular sieves and 535.91g of 1-benzyl-4-hydroxypiperidine [BeOP, 3.26mol], 463.13g of N,N -Dimethyl-2-ethylpiperidinium chloride [DMEPCl, 2.21mol] into S a In the solution, 909.89g of potassium hydroxide [KOH, 16.23mol] was added to the above solution to adjust the pH value of the...

Embodiment 3

[0046] Synthesis of SSZ-13 / SSZ-39 Composite Molecular Sieves

[0047] 666.78g of white carbon black [SiO 2 , 99wt.%, 11.10mol] was dissolved in 5520.88mL of water, mixed to make solution S, and then the solution was divided into two parts by mass, 50% and 50%, respectively, and recorded as solution S c and solution S a , 82.33g of aluminum nitrate [Al(NO 3 ) 3 9H 2 O, purity ≥98wt.%, 0.22mol], 127.98g amantadine [TMAdaOH, purity ≥98wt.%, 0.85mol] into S c solution, stirred for 3.3h to obtain solution S c '; 56.21g of aluminum nitrate [Al(NO 3 ) 3 9H 2 O, purity ≥98wt.%, 0.15mol], 33.22g of USY molecular sieves, and 135.30g of 2,2,4,6,6-pentamethyl-2-azabicyclo[3.2.1]octane [PMNO , 0.66mol] and 90.65g of N,N-dimethyl-3,5-dimethylpiperidinium bromide [DMDMPBr, 0.41mol] into S a In the solution, after fully stirring for 2.9 hours, add 2656.56 g of lithium hydroxide [LiOH, 110.69 mol] to the above solution to adjust the pH value of the solution between 11 and 12, and con...

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Abstract

The invention relates to an SSZ-13 / SSZ-39 composite structure molecular sieve as well as a synthesis method thereof, and mainly solves the problems of single structures, less strong and weak acid centers and low catalytic activity of molecular sieve porous materials in the prior art. The SSZ-13 / SSZ-39 composite structure molecular sieve is characterized by comprising the SSZ-13 and SSZ-39 two phases, the problems are well solved, and the SSZ-13 / SSZ-39 composite structure molecular sieve can be applied to industrial production of hydrocarbon downstream products from a synthesis gas.

Description

technical field [0001] The invention relates to a SSZ-13 / SSZ-39 compound structure molecular sieve and a synthesis method thereof. Background technique [0002] Due to the wide range of internal pore size distribution and the rich diversity of topological structures, zeolite molecular sieve materials are widely used in the fields of adsorption, heterogeneous catalysis, carriers of various guest molecules, and ion exchange. They are mainly characterized by selective adsorption, and their unique pore system enables them to sieve molecules of different sizes, which is why this type of material is called "molecular sieve". According to the definition of the International Union of Pure and Applied Chemistry (IUPAC), porous materials can be divided into the following three categories according to their pore diameters: materials with a pore diameter less than 2 nm are microporous materials; materials with a pore diameter between 2 and 50 nm Materials are mesopore materials; materi...

Claims

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Application Information

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IPC IPC(8): B01J29/80C07C1/04C07C1/20C07C11/02C07C11/04C07C11/06C07C11/09C07C4/06C07C11/12
CPCY02P20/52Y02P30/20Y02P30/40
Inventor 乔健滕加伟袁志庆张铁柱
Owner CHINA PETROLEUM & CHEM CORP
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