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Synthetic method of ZSM-12 type zeolite molecular sieve

A technology of ZSM-12 and zeolite molecular sieve, which is applied in the direction of ZSM-12 crystalline aluminosilicate zeolite and crystalline aluminosilicate zeolite, and can solve the problems of ZSM-12 zeolite molecular sieve with many impurities and low feasibility of template agent , to achieve the effect of high purity, high feasibility and fine grain

Active Publication Date: 2017-04-26
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0007] Technical problem to be solved by this invention In the prior art, the feasibility of the template agent for synthesizing the ZSM-12 type zeolite molecular sieve is low, and the obtained ZSM-12 type zeolite molecular sieve has more impurities. A quaternary ammonium salt or quaternary ammonium Alkali is template agent, the method for synthesizing ZSM-12 type zeolite molecular sieve

Method used

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  • Synthetic method of ZSM-12 type zeolite molecular sieve
  • Synthetic method of ZSM-12 type zeolite molecular sieve
  • Synthetic method of ZSM-12 type zeolite molecular sieve

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Effect test

Embodiment 1

[0024] Mix 0.021 gram of sodium metaaluminate, 0.29 gram of sodium hydroxide, 1.46 gram of template Q1, 7.21 gram of 40% silica sol and 10.8 gram of water, move the above mixture into a reaction kettle and crystallize at 170°C for 100 hours, react After washing and drying, it was identified as molecular sieve with ZSM-12 structure by XRD. The related structure of template agent Q1 is shown in Table 1.

Embodiment 2

[0026] Mix 0.041 grams of sodium metaaluminate, 0.58 grams of sodium hydroxide, 2.91 grams of template Q2, 14.42 grams of 40% silica sol and 3.6 grams of water, move the above mixture into a reaction kettle and crystallize at 170°C for 120 hours. After washing and drying, the product was identified by XRD as a molecular sieve with a ZSM-12 structure. The related structure of template agent Q2 is shown in Table 1.

Embodiment 3

[0028] Mix 0.041 grams of sodium metaaluminate, 1.18 grams of sodium hydroxide, 2.91 grams of template agent Q2, 14.42 grams of 40% silica sol and 3.6 grams of water, move the above mixture into a reaction kettle and crystallize at 160 ° C for 120 hours, and react After washing and drying, it was identified by XRD as a molecular sieve with ZSM-12 structure, accompanied by a small amount of layered material Kenyaite. The related structure of template agent Q2 is shown in Table 1.

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Abstract

The invention relates to a synthetic method of ZSM-12 type zeolite molecular sieve. The method mainly solves the problems that a template for synthesis of the ZSM-12 type zeolite molecular sieve has low feasibility and the amount of impurities in the obtained ZSM-12 type zeolite molecular sieve is more in the prior art. The initial mole ratio of SiO2:Al2O3:alkaline substance A:template Q is 10:(0.5-4.5):(0.2-4.0):(0.5-5.0):(80-400), the silicon source, the aluminium source, the template Q and water are uniformly mixed in order to obtain a mixture, hydrothermal crystallization is carried out for the mixture at 95-180 DEG C for 20-200 hours, the products are washed and dried, and the ZSM-12 type zeolite molecular sieve is obtained. The technical scheme better solves the technical problem, and can be applied to industrial catalytic application.

Description

technical field [0001] The invention relates to a method for synthesizing ZSM-12 zeolite molecular sieve. Background technique [0002] Zeolite molecular sieves are widely used due to their unique pore shape selectivity, unique solid acid properties and excellent ion exchange properties, and have shown their great commercial application value in adsorption, separation and catalysis. For example, in the field of petroleum refining and chemical industry, the application of Y zeolite has brought a sudden revolution to petroleum catalytic cracking technology, while other molecular sieve catalysts, such as ZSM-5 zeolite, mordenite, β zeolite, MCM-22 zeolite , The application of SAPO-34 molecular sieves has also brought substantial breakthroughs to important petroleum refining and chemical technologies such as cracking, reforming, isomerization, aromatics disproportionation and alkylation, methanol conversion, etc. Therefore, in view of the important role of molecular sieves in m...

Claims

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Application Information

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IPC IPC(8): C01B39/42
Inventor 沈少春杨为民袁志庆陶伟川
Owner CHINA PETROLEUM & CHEM CORP
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