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Preparation method for adsorption catalyst for removing indoor formaldehyde

A formaldehyde adsorption and catalyst technology, applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of small gas molecule adsorption, non-persistence, secondary pollution, etc., and improve utilization The effect of increasing the rate, enhancing the adsorption capacity, and increasing the contact area

Inactive Publication Date: 2015-11-25
ANHUI KEPU ENVIRONMENT TECH CO LTD
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  • Description
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Problems solved by technology

[0003] There are many treatment methods for formaldehyde, such as adsorption method, chemical method, photocatalytic method, etc. Among them, the adsorption method is widely used. The commonly used adsorbents mainly include activated carbon, silica gel, zeolite, etc., but are limited by the pore size and pore permeability. At present, the adsorption capacity of the adsorbent materials used for small gas molecules is small, and the study found that although the formaldehyde scavenger can quickly and effectively remove indoor formaldehyde, it is easy to cause secondary pollution and has no persistence.

Method used

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  • Preparation method for adsorption catalyst for removing indoor formaldehyde

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preparation example Construction

[0022] refer to figure 1 , a kind of preparation method that the present invention proposes is used for indoor removal formaldehyde adsorption catalyst, comprises the steps:

[0023] S1. Add zeolite powder into concentrated nitric acid solution and stir evenly, then add hydrogen peroxide for stirring, and then filter to obtain the first material;

[0024] S2. Add the first material into the sucrose solution, stir evenly, let stand, filter, sinter, and pulverize to obtain the second material;

[0025] S3, adding manganese nitrate and cerium nitrate into water to dissolve completely to obtain a mixed solution, then adding the second material into the mixed solution and stirring evenly, sintering after standing, taking out, pulverizing and then placing in ammonium chloride solution and stirring, and standing , and then dried to obtain an adsorption catalyst for indoor formaldehyde removal.

Embodiment 1

[0028] A kind of preparation method that the present invention proposes is used for indoor removal formaldehyde adsorption catalyst, comprises the steps:

[0029] S1. Add 45 parts of 200 mesh zeolite powder in parts by weight to 24 parts of concentrated nitric acid solution with a mass fraction of 68wt% and stir evenly, then add 80 parts of hydrogen peroxide with a mass fraction of 16wt% and stir for 2 hours. During the process of adding hydrogen peroxide and stirring , maintaining the temperature at 40°C, and then filtering to obtain the first material;

[0030] S2. Add 100 parts of the first material in parts by weight to 80 parts of sucrose solution with a mass fraction of 55wt%, stir evenly, let stand for 12 hours, filter and sinter at 440°C for 1.5 hours, and pulverize to obtain the first Two materials;

[0031] S3, adding manganese nitrate and cerium nitrate into water to dissolve completely to obtain a mixed solution, the concentration of manganese ions in the mixed so...

Embodiment 2

[0033] A kind of preparation method that the present invention proposes is used for indoor removal formaldehyde adsorption catalyst, comprises the steps:

[0034] S1. Add 55 parts of 160 mesh zeolite powder in parts by weight to 36 parts of concentrated nitric acid solution with a mass fraction of 65wt% and stir evenly, then add 88 parts of hydrogen peroxide with a mass fraction of 10wt% and stir for 4 hours. During the process of adding hydrogen peroxide and stirring , maintaining the temperature at 30°C, and then filtering to obtain the first material;

[0035] S2. Add 100 parts of the first material in parts by weight to 88 parts of sucrose solution with a mass fraction of 50wt%, stir evenly, let stand for 16 hours, filter and sinter at 400°C for 2 hours, and pulverize to obtain the second materials;

[0036] S3, adding manganese nitrate and cerium nitrate into water to dissolve completely to obtain a mixed solution, the concentration of manganese ions in the mixed solutio...

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Abstract

The invention discloses a preparation method for an adsorption catalyst for removing indoor formaldehyde. The method comprises the following steps that zeolite powder is added into a thick salpeter solution for even stirring, hydrogen peroxide is added for stirring, and then filtering is performed to obtain a first material; the first material is added into a sucrose solution for even stirring and standing, sintering is performed after filtering, and smashing is performed to obtain a second material; manganese nitrate and cerium nitrate are added into water to be dissolved thoroughly to obtain a mixed solution, the second material is added into the mixed solution for even stirring, sintering is performed after standing is performed, the material is taken out, smashed and put into an ammonium chloride solution for stirring and standing, and then drying is performed to obtain the adsorption catalyst for removing indoor formaldehyde. The preparation method is simple, raw materials are easy to obtain, the obtained adsorption catalyst for removing indoor formaldehyde is high in formaldehyde adsorption capacity, the formaldehyde can be oxidized and degraded while being adsorbed, and the formaldehyde removal effect is good.

Description

technical field [0001] The invention relates to the technical field of indoor formaldehyde removal, in particular to a preparation method of an adsorption catalyst for indoor formaldehyde removal. Background technique [0002] In recent years, with the vigorous development of my country's real estate industry, my country's architectural decoration industry has also developed very rapidly, with an annual growth rate of about 20%, which is much higher than the growth rate of GDP in the same period. A large number of artificial synthetic materials are widely used in interior decoration and finished furniture. The volatile toxic compounds such as formaldehyde released by them have caused serious pollution to the indoor environment and are the main cause of many diseases. The case has seriously affected the physical and mental health and normal life of the people. Indoor air pollution has become another killer that damages human health. [0003] There are many treatment methods...

Claims

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Application Information

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IPC IPC(8): B01J29/04B01D53/86B01D53/72B01D53/02
Inventor 柯锐
Owner ANHUI KEPU ENVIRONMENT TECH CO LTD
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