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A kind of large-size analcime and its synthesis method

A synthesis method, the technology of analcite, applied in the direction of crystalline aluminosilicate zeolite, etc., can solve the problem of high cost of the preparation method, achieve the effect of simple and easy preparation method, promote the growth of crystals, and promote the continued growth

Active Publication Date: 2020-09-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with conventional heating methods, the cost of its preparation method is higher

Method used

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  • A kind of large-size analcime and its synthesis method
  • A kind of large-size analcime and its synthesis method
  • A kind of large-size analcime and its synthesis method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Take 5 g of sodium hydroxide and 5 g of sodium aluminate in 50 mL of distilled water, and stir until they are completely dissolved. Then add 12 g of white carbon black and stir evenly. Then take out 50% of the whole material and place it in an oven at 50°C for aging for 30h. Then mix it with the rest of the material evenly, put it into a closed reaction kettle, and crystallize it in an oven at 180°C for 72h. The obtained product was washed 4 times with distilled water to neutrality, and dried at 120°C for 12 hours. The obtained sample number was CL1, and the obtained sample was as follows: figure 1 As shown, it is pure analcime without other impurities.

Embodiment 2

[0032] Take 1 g of potassium hydroxide and 5 g of aluminum nitrate in 60 mL of distilled water, and stir until they are completely dissolved. Then add 12 g of silica gel and stir evenly. Then take out 40% of the whole material and place it in an oven at 55°C for aging for 35h. Then mix it with the rest of the materials evenly, put it into a closed reaction kettle, and crystallize it in an oven at 170°C for 35h. The obtained product was washed 4 times with distilled water to neutrality, and dried at 120°C for 12 hours. The obtained sample was analcime, coded as CL2.

Embodiment 3

[0034] Take 8.5 g of sodium hydroxide and 8 g of aluminum sulfate in 25 mL of distilled water, and stir until they are completely dissolved. Then add 20g of silica sol (silica content 25%) and stir evenly. Then 45% of the whole material was taken out and aged in an oven at 60°C for 28h. Then mix it with the remaining materials evenly, put it into a closed reaction kettle, and crystallize it in an oven at 190°C for 40h. The obtained product was washed 4 times with distilled water to neutrality, and dried at 120°C for 12 hours. The obtained sample was analcime, coded as CL3.

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Abstract

The invention discloses large-size analcite and a synthesis method thereof, wherein the type of the crystal is analcite, the morphology comprises a bulk shape and a spherical shape, and the large-sizeanalcite has a large particle size. The synthesis method comprises: uniformly mixing an inorganic alkali, a silicon source, an aluminum source and water according to a certain ratio to obtain a silicon-aluminum gel, carrying out aging treatment on part of the obtained silicon-aluminum gel, mixing the aged silicon-aluminum gel and the remaining part, carrying out crystallization treatment, separating, washing, and drying to obtain analcime. According o the present invention, the prepared analcite has large particle size, and the preparation method is simple and easy to perform.

Description

technical field [0001] The invention belongs to the field of synthesis of porous inorganic materials, in particular to analcime and a synthesis method thereof. Background technique [0002] Analcime has the characteristics of strong ion exchange capacity, strong surface adsorption, good anti-fouling and anti-redeposition effects, non-toxic, non-polluting, good stability, etc., and can be used in the fields of detergents, catalysts, adsorption and separation; especially in water purification In the field of remediation and contaminated soil, analcime can lock and remove toxic heavy metal ions, and plays a huge role in environmental governance. At present, heavy metal pollution in domestic river soil is becoming more and more serious, and analcime is an extremely important adsorption material to solve this problem. [0003] At present, the particle size of analcime synthesized by conventional methods is on the order of microns, ranging from one to more than ten microns, which...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B39/02
Inventor 范峰凌凤香张会成王少军杨春雁
Owner CHINA PETROLEUM & CHEM CORP
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