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A preparation method of a spherical material for removing formaldehyde gas molecules by double catalytic color development

A technology for removing formaldehyde and gas molecules, which is applied in the field of preparation of spherical materials for removing formaldehyde gas molecules by double-catalysis and color development, can solve the problems of limited application range and conditions, inability to remove formaldehyde, complicated by-products, etc., and achieve low price and easy Observation and Confirmation, Type Common Effects

Active Publication Date: 2021-06-25
JIANGSU INST OF METROLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the formaldehyde reaction in the liquid environment requires more corresponding substances, the accompanying by-products are complicated, and the color change caused will change in a short period of time in the liquid environment and cannot remain unchanged for a long time, thus Misjudgment is caused, and at the same time only the detection effect can not be achieved to remove formaldehyde, so the prior art method is limited in the scope of application and conditions

Method used

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  • A preparation method of a spherical material for removing formaldehyde gas molecules by double catalytic color development
  • A preparation method of a spherical material for removing formaldehyde gas molecules by double catalytic color development
  • A preparation method of a spherical material for removing formaldehyde gas molecules by double catalytic color development

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Embodiment 1

[0048] The preparation method of the double-catalyzed and color-developed formaldehyde gas molecular scavenging spherical material of the present invention comprises the following steps:

[0049] (1) Preparation of silica mesoporous materials

[0050] Dissolve 10g of cetyltrimethylammonium bromide (CTAB) in 30ml (30g) of pure water, pour it into a 150ml single-necked flask and stir at 50°C, then add 15g of tetraethyl orthosilicate (TEOS), and continue mechanically Stir so that the mixture is evenly mixed, the mixed solution is stirred under mechanical stirring for 30 minutes to disperse and mix evenly, add TEOS at 50°C and continue to mechanically stir for 6 hours, and then stand still for 2 hours; the product is reflux extracted with acetone solution for 3 times to remove the template agent CTAB, and the boiling point is After washing with petroleum ether at 30°C-60°C for 6 times, vacuum-dry it for later use. The specific surface area of ​​the material determined by nitrogen...

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Abstract

The invention provides a method for preparing a spherical material for removing formaldehyde gas molecules through catalysis and color development, which is characterized in that it comprises the following steps: combining an ethanol solution of phloroglucinol and a silica sol of a silica mesoporous material containing ammonia The ratio is poured into the sodium hydroxide solution, fully stirred and mixed to form a viscous paste, and then the paste is poured into a spherical mold, and after a period of time, it solidifies and forms a spherical shape. Among them, ammonia water is No. 1 catalyst, hydrogen Sodium oxide is the No. 2 catalyst. The invention has a spherical material with the function of removing indoor formaldehyde and is accompanied by a pink color indication function, which can effectively remove formaldehyde molecules, make up for the fatal defect that the physical adsorption material becomes a secondary release source after absorbing formaldehyde, and minimize the impact of indoor formaldehyde on family members, especially children. Harm caused by human body, so it has high creativity, novelty and practical application value.

Description

technical field [0001] The invention relates to the technical field of novel material preparation, in particular to a preparation method of a spherical material for removing formaldehyde gas molecules through double-catalysis and color development, that is, a phloroglucinol based on the adsorption of formaldehyde gas molecules and the surface of silica mesoporous materials The invention discloses a preparation method of a novel spherical material that changes color and removes formaldehyde molecules after a chemical reaction occurs under the action of two catalysts. Background technique [0002] Formaldehyde, also known as formaldehyde, is colorless and odorless. It is a protoplasmic poison that destroys the protein of biological cells. It can cause damage to human skin, respiratory tract and internal organs, anesthetize the central nervous system of humans, and can cause pulmonary edema, hepatic coma, and kidney failure. Wait. The World Health Organization confirms that fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/86B01D53/72A62D3/30B01J27/24G01N21/78A62D101/28
CPCA62D3/30A62D2101/28B01D53/8668B01J27/24G01N21/783
Inventor 郑海富毛朔南马宇明蔡冶强宋栋梁任坚邢金京孙磊
Owner JIANGSU INST OF METROLOGY
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