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Preparation method for SSZ-13 molecular sieve

A molecular sieve and seed crystal technology, which is applied in the field of preparation of SSZ-13 molecular sieve, can solve the problem of high synthesis temperature of SSZ-13 molecular sieve, achieve low production cost, be conducive to industrial production, and reduce energy consumption.

Inactive Publication Date: 2019-01-01
SHANDONG SINOCERA FUNCTIONAL MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to improve the problem of high synthesis temperature of the existing SSZ-13 molecular sieve and achieve the result of energy saving

Method used

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  • Preparation method for SSZ-13 molecular sieve
  • Preparation method for SSZ-13 molecular sieve
  • Preparation method for SSZ-13 molecular sieve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The present embodiment provides a kind of preparation method of SSZ-13 molecular sieve:

[0024] 20.17g template agent (mass fraction is 25%) and 1.10g boehmite (containing Al 2 o 3 The mass fraction is 86%) and 28ml of deionized water were mixed and stirred for 15min, NaOH 0.08g was added to the solution, and 0.81g of SSZ-13 seed crystal was added after continuing to stir to room temperature, and 15.01g of coarse-porous silicon balls (96wt.% ), finally add 2ml of ethanol, after stirring for 6h, transfer the sol to a hydrothermal kettle, crystallize at 120°C for 48h, cool, filter, wash to pH=7~8, dry at 120°C for 12h, and then Calcined at 600°C for 10 hours to obtain SSZ-13 molecular sieve.

Embodiment 2

[0026] The present embodiment provides a kind of preparation method of SSZ-13 molecular sieve:

[0027] 25.12g templating agent (25wt.%) and aluminum sulfate 1.68g (containing Al 2 o 3 The mass fraction is 51%) and 20ml deionized water were mixed and stirred for 15min, NaOH 2.50g was added to the solution, and SSZ-13 seed crystal 1g was added after continuing to stir to room temperature, and 37.51g (40wt.%) of silica sol was added after stirring evenly , finally add 5ml of ethanol, after stirring for 2h, transfer the sol to a hydrothermal kettle, crystallize at 120°C for 48h, cool, filter, wash to pH=7~8, dry at 120°C for 12h, and then in 600°C Calcined at ℃ for 10h to obtain SSZ-13 molecular sieve.

[0028] The XRD phase diagram of the SSZ-13 prepared in this embodiment is as attached figure 1 shown.

[0029] The SEM figure of the SSZ-13 prepared in this embodiment is as attached image 3 shown.

Embodiment 3

[0031] The present embodiment provides a kind of preparation method of SSZ-13 molecular sieve:

[0032] 19.36g template agent (25wt.%) and pseudo-boehmite 1.11g (containing Al 2 o 3 The mass fraction is 75.56%) and 30ml of deionized water were mixed and stirred for 15min, NaOH 0.07g was added to the solution, and 0.40g of SSZ-13 seed crystal was added after continuing to stir to room temperature, and 15.02g of coarse-porous silicon balls (96wt.% ), finally add 6ml of ethanol, after stirring for 8h, transfer the sol to a hydrothermal kettle, crystallize at 110°C for 36h, cool, filter, wash to pH=7~8, dry at 120°C for 12h, and then Calcined at 600°C for 8 hours to obtain SSZ-13 molecular sieve.

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Abstract

The invention relates to the field of material chemistry, and in particular to a preparation method for an SSZ-13 molecular sieve. The SSZ-13 molecular sieve can be used in the chemical processes of SCR, MTO, gas separation and the like. The preparation method adopts ethanol to replace part of water to be served as a solvent; and the volume of added ethanol accounts for 1 to 10 percent of the total volume of water. The invention provides the SSZ-13 synthesis method which can decrease hydrothermal temperature by adding ethanol. By replacing part of water with ethanol, the pressure in a kettle is increased, so that high pressure is achieved at low temperature, the condition of SSZ-13 synthesis is achieved. Energy consumption is effectively reduced by the method, the production cost is low, and moreover, the method is safe and favorable for industrial production.

Description

technical field [0001] The invention relates to the field of material chemistry, in particular to a preparation method of SSZ-13 molecular sieve. Background technique [0002] SSZ-13 molecular sieve has good thermal stability and can be used as a carrier for adsorbents or catalysts, such as air purifiers, automobile exhaust catalysts, etc. At the same time, SSZ-13 molecular sieve also has cation exchange and acidity adjustable. Its unique eight-membered ring structure and ellipsoidal cage also make it have high selectivity, so it is suitable for various reaction processes such as the catalysis of hydrocarbons. Cracking, hydrocracking and olefins and aromatics structuring reactions all have good catalytic properties, and can be used as catalysts in applications, such as automobile exhaust catalyst supports or alcohol-to-olefin catalysts, and can also be used for adsorption or separation, such as Air purifier etc. In catalysis, its catalytic performance is not only much high...

Claims

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Application Information

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IPC IPC(8): C01B39/48
CPCC01B39/48C01P2002/72C01P2004/03
Inventor 宋锡滨艾辽东穆岩岩焦英训潘光军
Owner SHANDONG SINOCERA FUNCTIONAL MATERIAL CO LTD