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Preparation method of formaldehyde scavenger

A formaldehyde scavenger and a certain amount of technology are applied in the field of preparation of formaldehyde scavengers to achieve the effect of effectively removing formaldehyde

Inactive Publication Date: 2018-01-26
南京市雨花台区绿宝工业设计服务中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are few reports on the preparation of formaldehyde scavengers by combining proteins and inorganic materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1: prepare a kind of formaldehyde scavenger according to the following specific steps.

[0010] Step 1. In 100mL of water, add 1g of protein gelatin, 0.8g of surfactant sodium dodecylsulfonate and 0.5g of dispersant polyethylene glycol PEG-2000, and control the temperature of the water bath at 60°C o C. Stir for 1h to obtain solution A;

[0011] Step 2. In 50mL of ethanol, add 20mL of hydrochloric acid HCl with a mass concentration of 37%, and slowly add 24.6g of butyl titanate Ti(OC 4 h 9 ) 4 , 1g ferric chloride hexahydrate FeCl 3 ·6H 2 O and 1g zinc chloride ZnCl 2 , stirred and hydrolyzed for 2h to obtain solution B;

[0012] Step 3, solution A and solution B are mixed, 60 o Under the condition of C water bath, ultrasonic reaction was performed for 12 hours, and at the same time, a sodium acetate solution with a mass concentration of 30% was added dropwise to adjust the pH value to 6.5 to obtain a uniform formaldehyde scavenger.

Embodiment 2

[0013] Embodiment 2: prepare a kind of formaldehyde scavenger according to the following specific steps.

[0014] Step 1. In 100mL of water, add 3g of protein gelatin, 1.5g of surfactant sodium dodecylsulfonate and 1g of dispersant PEG-4000, and control the temperature of the water bath at 80 o C, stirred for 2h to obtain solution A;

[0015] Step 2. In 50mL of ethanol, add 50mL of HCl with a mass concentration of 37%, and slowly add 82gTi(OC 4 h 9 ) 4 , 6.5g FeCl 3 ·6H 2 O and 6.5g ZnCl 2 , stirred and hydrolyzed for 4h to obtain solution B;

[0016] Step 3, solution A and solution B are mixed, 80 o Under the condition of C water bath, ultrasonic reaction was performed for 24 hours, and at the same time, a sodium acetate solution with a mass concentration of 30% was added dropwise to adjust the pH value to 5.0 to obtain a uniform formaldehyde scavenger.

Embodiment 3

[0017] Embodiment 3: prepare a kind of formaldehyde scavenger according to the following specific steps.

[0018] Step 1. In 100mL of water, add 2g of protein gelatin, 1.2g of surfactant sodium dodecylsulfonate and 0.7g of dispersant PEG-6000, and control the temperature of the water bath at 70 o C. Stir for 1.5h to obtain solution A;

[0019] Step 2, in 50mL ethanol, add 30mL mass concentration and be the hydrochloric acid HCl of 37%, under stirring condition, slowly add 45g Ti(OC 4 h 9 ) 4 , 3.5g FeCl 3 ·6H 2 O and 3.5g ZnCl 2 , stirred and hydrolyzed for 3h to obtain solution B;

[0020] Step 3, solution A and solution B are mixed, 70 o Under the condition of C water bath, ultrasonic reaction was performed for 18 hours, and at the same time, a sodium acetate solution with a mass concentration of 30% was added dropwise to adjust the pH value to 6.0 to obtain a uniform formaldehyde scavenger.

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PUM

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Abstract

The invention discloses a preparation method of a formaldehyde scavenger. The invention adopts the technical key points as follows: the preparation method comprises the following steps: firstly, adding protein gelatin, a surfactant sodium dodecyl sulfate and a dispersant polyethylene glycol into a certain amount of water, controlling water bath temperature, and stirring to obtain a solution A; secondly, adding hydrochloric acid into a certain amount of ethanol, sequentially and slowly adding butyl titanate, ferric chloride hexahydrate and zinc chloride under a stirring condition, stirring andhydrolyzing to obtain a solution B; mixing the solution A and the solution B, performing an ultrasonic reaction under a water bath condition, and dropwise adding a sodium acetate solution, and adjusting the pH value to obtain a uniform formaldehyde scavenger. The formaldehyde scavenger contains acetic acid and ethanol, has the effects of sterilizing and effectively adsorbing formaldehyde, and caneffectively scavenge formaldehyde by combining the photocatalytic formaldehyde degrading functions of inorganic titanium dioxide and composite oxide of iron oxide and zinc oxide as well as the proteingelatin.

Description

technical field [0001] The invention relates to the technical field of environmental protection materials, in particular to a preparation method of a formaldehyde scavenger. Background technique [0002] Formaldehyde, also known as formaldehyde, is a colorless gas with a strong pungent smell. Formaldehyde reacts with proteins in the human body to cause harm, such as affecting the human digestive tract, respiratory tract and skin, thereby causing cancer, Deformity and many other issues. [0003] As an excellent photocatalyst, titanium dioxide is harmless to the human body and has been widely used in the field of catalytic degradation of formaldehyde. For example, CN103613129B reports a nanoscale titanium dioxide sol and its preparation method and method for removing formaldehyde. Gelatin (Gelatin) is partially degraded by collagen in connective tissues such as animal skin, bone, and sarcolemma to become white or light yellow, translucent, and slightly shiny flakes or powders...

Claims

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Application Information

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IPC IPC(8): B01D53/86B01D53/78B01D53/72A01N31/02A01N37/02A01P3/00A01P1/00
Inventor 季红军
Owner 南京市雨花台区绿宝工业设计服务中心
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