Methanal disintegrant and preparation thereof

A formaldehyde decomposition and activated carbon technology, applied in separation methods, chemical instruments and methods, other chemical processes, etc., can solve the problems of high price, difficulty, small adsorption capacity, etc., and achieve the effect of good effect, convenient and safe use

Inactive Publication Date: 2005-10-12
潘晓明
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

At present, there are some technical defects in the materials or methods for treating formaldehyde pollution, such as: the static adsorption method of activated carbon or molecular sieve has low rate and small adsorption capacity, and cannot chemically react with formaldehyde, that is, it cannot fundamentally remove formaldehyde. The indoor formaldehyde removal is not obvious; the use of photocatalyst or cold catalyst and other devices is expensive, the efficiency of formaldehyde decomposition is not high, and it is not easy to be accepted by people; the formaldehyde remover in liquid form is inconvenient and unsafe to use. , and may cause secondary pollution, which is inconvenient to promote; moreover, due to the long release period of formaldehyde in adhesives, paints, furniture and other paints, some can last for decades, therefore, the method of ventilation and ventilation cannot be used at all. Completely eliminate the pollution of harmful gases

Method used

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  • Methanal disintegrant and preparation thereof
  • Methanal disintegrant and preparation thereof

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Embodiment Construction

[0012] Formaldehyde decomposing agent, composed of activated carbon and Tollen's reagent (Ag(NH 3 ) 2 + Oh - ) composition; wherein activated carbon is used as a carrier, Ag(NH 3 ) 2 + Oh - Coated on the carrier to absorb and decompose formaldehyde. Activated carbon, Ag(NH 3 ) 2 + Oh - The sources are plentiful.

[0013] The preparation method of formaldehyde decomposing agent comprises the steps:

[0014] 1) Dry and cool the activated carbon at 200, 210, 220 or 230°C;

[0015] 2) placed in Ag(NH 3 ) 2 + Oh - Soak in the solution for 8h, 10h or 12h, then filter and air-dry;

[0016] 3) Dry at 80-100°C.

[0017] Ag(NH 3 ) 2 + Oh - For conventional saturated solution. Ag(NH 3 ) 2 + Oh - And activated charcoal can be formulated or purchased directly.

[0018] Basic principle of the present invention: activated carbon is a porous substance similar to a sponge structure. Activated carbon can be divided into: coal, wood, fruit shell, and coconut shell ca...

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Abstract

A formaldehyde decomposing agent is prepared through baking activated carbon at 200-230 deg.c, cooling, immersing it in the solution of Ag(NH3)2OH for 8-12 hr, filtering, drying in air and baking at 80-100 deg.C.

Description

technical field [0001] The invention relates to a formaldehyde decomposing agent for purifying air, in particular to a modified activated carbon and a preparation method thereof. Background technique [0002] With the continuous improvement of people's living standards, house decoration and furniture replacement are becoming more and more frequent. Because many adhesives, coatings, paints, etc. volatilize pollutants based on formaldehyde to varying degrees, causing varying degrees of harm to the human body. Therefore, the requirements for controlling formaldehyde pollution are becoming more and more urgent. At present, there are some technical defects in the materials or methods for treating formaldehyde pollution, such as: the static adsorption method of activated carbon or molecular sieve has low rate and small adsorption capacity, and cannot chemically react with formaldehyde, that is, it cannot fundamentally remove formaldehyde. The indoor formaldehyde removal is not o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/04B01D53/72B01D53/81B01D53/86B01J20/20
Inventor 潘晓明姜和
Owner 潘晓明
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