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Formaldehyde absorbent and preparation method thereof

A formaldehyde adsorption, red pyroxene zeolite technology, applied in chemical instruments and methods, other chemical processes, silicates, etc., can solve the problems of poor adsorption performance, large particles, etc., and achieve high whiteness, small particles, and low prices. Effect

Inactive Publication Date: 2012-07-04
GUANGXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current activated carbon adsorbent has large particles and poor adsorption performance. Generally, the adsorption capacity of formaldehyde is 5-10mg / g, and the price is relatively expensive.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The main raw materials for preparing hematilite formaldehyde adsorbent are natural hematilite mineral and hydrochloric acid solution. Manufacturing process: washing?? dry crushing?? modification? stirring? washing? drying? finished product packaging. Concrete preparation method comprises the following steps:

[0018] 1. Use the hematilite ore produced by Guangxi Resources as the main raw material, and wash the raw material;

[0019] 2. Crushing and processing to 600 mesh;

[0020] 3. Using 45g of zeolite 3M hydrochloric acid 250ml as a ratio, modify zeolite, stir at room temperature for 2-3 hours, improve the effective channel structure of zeolite, and place it at room temperature for 2 hours;

[0021] 4. Wash until neutral;

[0022] 5. Drying to obtain hematite formaldehyde adsorbent. The adsorption capacity of the modified zeolite is significantly improved, and the zeolite formaldehyde adsorbent is made of the zeolite.

Embodiment 2

[0024] The main raw materials for preparing hematilite formaldehyde adsorbent are natural hematilite mineral and hydrochloric acid solution. Manufacturing process: elutriation?? dry crushing?? modification? stirring? washing? drying? finished product packaging. Concrete preparation method comprises the following steps:

[0025] 1. Use the hematilite ore produced by Guangxi Resources as the main raw material, and wash the raw material;

[0026] 2. Crushing and processing to 800 mesh;

[0027] 3. Using 60g of zeolite 3M hydrochloric acid 400ml as a ratio, modify zeolite, stir at room temperature for 2-3 hours, improve the effective channel structure of zeolite, and place it at room temperature for 2 hours;

[0028] 4. Wash until neutral;

[0029] 5. Drying to obtain hematite formaldehyde adsorbent. The adsorption capacity of the modified zeolite is significantly improved, and the zeolite formaldehyde adsorbent is made of the zeolite.

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Abstract

The invention discloses a formaldehyde absorbent and a preparation method thereof. Natural resource stellerite ore in Guangxi is taken as a raw material, and the formaldehyde absorbent is prepared by elutriation, dry grinding, modification, stirring, washing, drying and finished product packaging. The formaldehyde absorbent which is prepared from stellerite has the advantages of: 1) small granule, high purity and high whiteness; 2) existence of continuous hollow channels in a three-dimensional skeleton structure, relatively more uniform aperture, large specific surface area and relatively higher ion exchange capacity; 3) high thermal stability and safe use; and 4) low cost.

Description

technical field [0001] The invention relates to an adsorbent, in particular to a formaldehyde adsorbent and a preparation method thereof. Background technique [0002] Formaldehyde is a moderately toxic substance. Modern scientific research shows that formaldehyde is very harmful to human health. Formaldehyde has a strong stimulating effect on human skin and mucous membranes, can coagulate and denature proteins in cells, and inhibit all cell functions; because formaldehyde produces methanol in the body, it has a strong damage to vision and retina. The lot of documents record, formaldehyde mainly shows aspects such as allotriosmia, stimulation, allergy, abnormal pulmonary function, abnormal liver function, abnormal immunologic function to health effects, but there are very large individual differences. Formaldehyde has been identified as a suspected carcinogen by WHO. Indoor formaldehyde mainly comes from artificial particleboard, fiberboard, large core board, plywood for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/16B01J20/30
Inventor 崔天顺李云亭周文剑
Owner GUANGXI NORMAL UNIV