Synthetic method of high-silicon zeolite

A synthesis method and high-silica zeolite technology are applied in the directions of crystalline aluminosilicate zeolite, borocarbonane silicone crystalline aluminosilicate zeolite, etc. to achieve the effects of avoiding heterocrystalline phases, improving product purity, and shortening synthesis reaction time.

Inactive Publication Date: 2016-01-27
FUYU ZHANGJIAGANG NEW MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The report of using glass powder as silico

Method used

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  • Synthetic method of high-silicon zeolite
  • Synthetic method of high-silicon zeolite
  • Synthetic method of high-silicon zeolite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Use quartz glass powder as silicon source, ethylamine (EA) as template, add FER (ferrierite) molecular sieve crystal (SAR=20) as seed crystal, according to EA: 0.1Na 2 O: SiO 2 : 12H 2 Mix O: 0.05FER evenly, put it into a stainless steel pressure-resistant reactor with a capacity of 100ml, place the reactor in an oven at 180°C, and perform a hydrothermal reaction under self-generated pressure for 24 hours. The reaction product is filtered, washed, and dried. , to obtain MTN zeolite crystals.

Embodiment 2

[0030] Use quartz glass powder as silicon source, ethylamine as template, add MOR (mordenite) molecular sieve crystal (SAR=13) as seed crystal, according to EA: 0.1Na 2 O: SiO 2 : 12H 2 Mix O: 0.05MOR evenly, put it into a stainless steel pressure-resistant reactor with a capacity of 100ml, place the reactor in an oven at 180°C, and perform a hydrothermal reaction under self-generated pressure for 24 hours. The reaction product is filtered, washed, and dried. , to obtain MTN zeolite crystals.

Embodiment 3

[0032] Using quartz glass powder as the silicon source, ethylamine as the template, and FAU (high silicon Y zeolite) molecular sieve crystal (SAR=90) as the seed crystal, according to EA: 0.1Na 2 O: SiO 2 : 12H 2 Mix O: 0.05FAU evenly, put it into a stainless steel pressure-resistant reactor with a capacity of 100ml, place the reactor in an oven at 180°C, and perform a hydrothermal reaction under self-generated pressure for 24 hours. The reaction product is filtered, washed, and dried. , to obtain MRE zeolite crystals.

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Abstract

The invention belongs to the technical field of microporous materials and particularly relates to a synthetic method of high-silicon zeolite. According to the synthetic method, glass powder is taken as a silicon source, crystalline-state aluminosilicate (zeolite), AlPO or SAPO (silicoaluminophosphate) molecular sieve, or a natural mineral molecular sieve crystal is taken as a seed crystal, alkylamine is taken as a structure-directing agent, accordingly, a reaction mixture is formed, and high-silicon MRE (ZSM-48), MFI (ZSM-5) and MTN (ZSM-39) zeolite molecular sieves are synthesized through a hydrothermal reaction under the guiding action of out-phase crystal nucleus. By means of the method, the synthetic reaction time can be shortened, generation of mixed crystal phases is avoided, the product purity is improved, and crystal grains of synthesized product zeolite have small sizes and are relatively uniformly distributed.

Description

technical field [0001] The invention belongs to the technical field of microporous materials, and in particular relates to a method for synthesizing high silica zeolite materials by heterogeneous nucleation. Background technique [0002] Silica zeolite molecular sieves are important shape-selective catalysts and adsorbent materials. Common silicon sources for the synthesis of high silica zeolites include liquid water glass, silica sol, solid silica gel, precipitated silica, white carbon black, silicon-rich natural mineral kaolin, montmorillonite, etc. The aluminum source is liquid aluminum salt, metaaluminate, solid alumina, aluminum hydroxide, pseudo-diaspore and the like. There are very few reports on the synthesis of zeolites using glass powder as a silicon source. Two papers in Acta Chemica Sinica in 2003 (61, 2, 251-255) and 2004 (62, 19, 1912-1916) respectively reported that boron-containing microporous glass powder was mixed with ethylamine-water or methylamine-wate...

Claims

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Application Information

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IPC IPC(8): C01B39/04C01B39/40
Inventor 龙英才魏岩
Owner FUYU ZHANGJIAGANG NEW MATERIALS TECH CO LTD
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