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Purificant for adsorbing formaldehyde and method of preparing the same

An adsorption purifier and formaldehyde adsorption technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of inability to purify indoor air, low adsorption capacity of polar substances, limited adsorption effect of activated carbon, etc., and achieve stable metal binding. high stability of crystal phase, good adsorption performance and stable adsorption effect

Inactive Publication Date: 2008-10-08
刘永能
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, activated carbon is a non-polar adsorbent, which has a strong ability to adsorb non-polar substances, but has a small ability to adsorb polar substances, so its adsorption is only a physical adsorption, so although it can adsorb formaldehyde, Benzene, toluene, xylene, ammonia, carbon monoxide, sulfur dioxide, benzodiazepines and a large number of different types of pollutants, but the effect is not significant, so the indoor air cannot meet the purification requirements
Especially for substances with small molecules and acidic properties such as formaldehyde, the adsorption effect of activated carbon is very limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Prepare the formaldehyde adsorption purifying agent according to the following steps:

[0025] (1) Weigh 37.5g aluminum nitrate and 19.9g copper acetate, add 200ml water and heat in a water bath at 30°C for stirring and dissolving to obtain a mixed solution of aluminum nitrate and copper acetate;

[0026] (2) Take by weighing 20g sodium hydroxide, add 100ml water and dissolve, obtain sodium hydroxide solution;

[0027] (3) Place the mixed solution of aluminum nitrate and copper acetate and sodium hydroxide solution in the dropping funnel respectively, place a beaker with 100mL water below the dropping funnel, place the stirring paddle in the beaker, open the stirrer, and Perform co-current co-precipitation titration under continuous stirring, control the flow rate to ensure that the titration of the two solutions is completed at the same time, after the titration is completed, continue to fully stir, and age at room temperature for 4 hours;

[0028] (4) Suction filter ...

Embodiment 2

[0031] Prepare the formaldehyde adsorption purifying agent according to the following steps:

[0032] (1) Weigh 23.5g aluminum nitrate and 19.9g copper acetate, add 200ml water and heat in a water bath at 35°C for stirring and dissolving to obtain a mixed solution of aluminum nitrate and copper acetate;

[0033] (2) Take by weighing 32.01g sodium carbonate, add 100ml water and dissolve, obtain sodium carbonate solution;

[0034] (3) Metal salt mixed solution and sodium carbonate solution are placed in the dropping funnel respectively, a beaker with 100mL water is placed under the dropping funnel, the stirring paddle is placed in the beaker, the stirrer is opened, and the mixture is carried out under constant stirring. Flow co-precipitation titration, control the flow rate to ensure that the titration of the two solutions is completed at the same time, after the titration, continue to fully stir, and age at 20 ° C for 4 hours;

[0035] (4) Suction filter the suspension, wash t...

Embodiment 3

[0038] Prepare the formaldehyde adsorption purifying agent according to the following steps:

[0039] (1) Weigh 37.5g aluminum nitrate and 9.9g copper acetate, add 200ml water and heat in a water bath at 30°C for stirring and dissolving to obtain a mixed solution of aluminum nitrate and copper acetate;

[0040] (2) Take by weighing 16g sodium hydroxide, add 100ml water and dissolve, obtain sodium hydroxide solution;

[0041](3) Put the metal salt mixed solution and sodium hydroxide solution in the dropping funnel respectively, place a beaker with 100mL water under the dropping funnel, place the stirring paddle in the beaker, turn on the stirrer, and carry out under constant stirring. Co-current co-precipitation titration, control the flow rate to ensure that the titration of the two solutions is completed at the same time, after the titration is completed, continue to fully stir, and age at 40 ° C for 4 hours;

[0042] (4) Suction filter the suspension, wash the filter residu...

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PUM

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Abstract

The invention discloses a formaldehyde purificatory absorbent and a preparation method thereof. The main adsorption active component of the formaldehyde adsorption purificant is an aluminum bronze multiple oxide provided with aluminate bronze crystal phase. As a further improvement of the invention, the adsorption active component of the formaldehyde adsorption purificant also comprises a tantalum that is a mixture of one or more of manganese, cobalt, zinc, nickel and iron. The method of the invention adopts the aluminum bronze multiple oxide provided with aluminate bronze crystal phase as the active component of the formaldehyde adsorption purificant; the oxide is of developed pore structure, large specific surface, good thermal stability and is more suitable for the formaldehyde adsorption than alumina as a absorbent owing to the pore structure, thus having better adsorptive performance to the micromolecule of formaldehyde, while the copper atom in the oxide has strong electron adsorption ability and can be combined with the carbonyl group of formaldehyde, thus further improving the adsorption effect to formaldehyde.

Description

technical field [0001] The invention relates to an adsorption purification agent, in particular to a formaldehyde adsorption purification agent, and also relates to a preparation method of the formaldehyde adsorption purification agent. Background technique [0002] In recent years, a large number of harmful chemical gases produced and released by humans have seriously polluted the ambient air on which people live. In relatively closed indoor environments such as residential buildings and passenger vehicles, air pollution is particularly serious due to the extensive use of building materials, decoration materials, furniture adhesives, home appliances, and office equipment. According to statistics, indoor air chemical pollution is generally dozens of times that of outdoor pollution, and it can reach hundreds of times under special circumstances. There are as many as 300 kinds of harmful volatile organic compounds that can be detected, and nearly 20 kinds of them have strong c...

Claims

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Application Information

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IPC IPC(8): B01J20/06B01J20/30
Inventor 刘永能
Owner 刘永能
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