3A molecular sieve and processing technology thereof

A processing technology and molecular sieve technology, applied in the direction of A-type crystalline aluminosilicate zeolite, crystalline aluminosilicate zeolite, etc., can solve the problems of unfavorable industrialized production and high production cost, achieve abundant reserves, simple method, and improve ion exchange rate. Effect

Inactive Publication Date: 2017-08-18
MINGGUANG FEIZHOU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method needs to adjust the ratio of various atoms in the raw material, and the raw material required for production is relatively expensive compared to the cheap mineral production, which is not conducive to industrial production

Method used

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  • 3A molecular sieve and processing technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Mix 10 parts of kaolin with 4 parts of KCl, and calcinate at 700°C for 5 hours to obtain a precursor mixture; take a clean beaker and add 3g KOH and 10g NaOH, add 100ml deionized water to the beaker, and after it is completely dissolved, weigh the precursor mixture 4Og, added to the beaker. After mixing evenly, the mixture was transferred to an Erlenmeyer flask, and the Erlenmeyer flask was placed in a water bath for heating reaction. After reacting at 90°C for 6 hours, the reaction product was taken out, and the 3A molecular sieve product was obtained after suction filtration and drying.

Embodiment 2

[0023] Example 2: Mix 10 parts of kaolin with 4 parts of KCl, and calcinate at 700°C for 4 hours to obtain a precursor mixture; take a clean beaker and add 2.4g KOH and 10g NaOH, and add 100ml of deionized water to the beaker, after completely dissolving , weighed 37g of the precursor mixture, and added it to the beaker. After mixing evenly, the mixture was transferred to an Erlenmeyer flask, and the Erlenmeyer flask was placed in a water bath for heating reaction. After reacting at 85°C for 8 hours, the reaction product was taken out, and the 3A molecular sieve product was obtained after suction filtration and drying.

Embodiment 3

[0024] Example 3: Mix 10 parts of kaolin with 4 parts of KCl, and calcinate at 600°C for 4 hours to obtain a precursor mixture; take a clean beaker and add 3g KOH and 10g NaOH, and add 100ml deionized water to the beaker. After completely dissolving, Weigh 42g of the precursor mixture and add it into the beaker. After mixing evenly, the mixture was transferred to an Erlenmeyer flask, and the Erlenmeyer flask was placed in a water bath for heating reaction. After reacting at 85°C for 6.5 hours, the reaction product was taken out, and the 3A molecular sieve product was obtained after suction filtration and drying.

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Abstract

The invention discloses a 3A molecular sieve and a processing technology thereof. The 3A molecular sieve is prepared by using kaolin as a raw material and directly reacting with lye after being calcined with salt, and specifically includes the following steps: mixing and calcining KC1 and kaolin to obtain an active Precursor mixture, then react the prepared mixture in lye, make K during the formation of 4A molecular sieve + directly with Na + The exchange effect occurs, and the 3A molecular sieve is directly obtained in one step. The present invention explores a simple method for directly synthesizing molecular sieves from cheap raw materials, and at the same time avoids the complex process of preparing 4A molecular sieves first and then preparing them by ion exchange in the traditional synthesis method.

Description

technical field [0001] The invention relates to a 3A molecular sieve and a processing technology thereof, belonging to the field of molecular sieve synthesis. Background technique [0002] Molecular sieve is a kind of aluminosilicate compound with cubic lattice. It is mainly composed of silicon and aluminum connected by oxygen bridges to form a hollow skeleton structure. In addition, it also contains metal ions with low electricity price and large ionic radius and combined water. Because the water molecules lose continuously after heating, but the crystal skeleton structure remains unchanged, many cavities of the same size are formed, and the cavities are connected with many micropores of the same diameter. Molecules with small diameters are adsorbed into the interior of the pores, and molecules larger than the pores are excluded, so molecules with different shapes and diameters, molecules with different polarities, molecules with different boiling points, and molecules wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B39/18
CPCC01B39/18
Inventor 胡睿顾文宇
Owner MINGGUANG FEIZHOU NEW MATERIAL
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