CN109499041B - Efficient and environment-friendly formaldehyde scavenger - Google Patents
Efficient and environment-friendly formaldehyde scavenger Download PDFInfo
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- CN109499041B CN109499041B CN201811545205.2A CN201811545205A CN109499041B CN 109499041 B CN109499041 B CN 109499041B CN 201811545205 A CN201811545205 A CN 201811545205A CN 109499041 B CN109499041 B CN 109499041B
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
- A62D3/30—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
- A62D2101/20—Organic substances
- A62D2101/28—Organic substances containing oxygen, sulfur, selenium or tellurium, i.e. chalcogen
Abstract
The embodiment of the invention discloses a high-efficiency environment-friendly formaldehyde scavenger, which comprises 100 parts by weight of a Y-type molecular sieve subjected to high-temperature steam treatment, 5-15 parts by weight of nano titanium dioxide, 1-20 parts by weight of sesbania gum, 3000 parts by weight of acetic acid-sodium acetate buffer solution, 4-20 parts by weight of nano iron oxide, 5-30 parts by weight of nano molybdenum disulfide, 100 parts by weight of organic solvent and 50-200 parts by weight of foaming agent. The inventor of the invention unexpectedly finds that the Y-type molecular sieve is treated by high-temperature water vapor and then mixed with the nano titanium dioxide, the nano iron oxide and the nano molybdenum disulfide for removing formaldehyde, so that the effective time and the removing effect of the formaldehyde remover can be prolonged. In addition, sesbania gum, acetic acid-sodium acetate buffer solution and organic solvent are added into the formaldehyde scavenger, so that the dispersion effect of the powder in the formaldehyde scavenger can be improved, and the spraying effect and the effect of contacting with the artificial board can be improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of air purification, and particularly relates to a high-efficiency environment-friendly formaldehyde scavenger.
Background
The formaldehyde scavenger is a liquid treatment product which is specially used for removing pollution sources and formaldehyde in air. The main chemical components are anion thermoelectric effect reaction solution, surface sealant, active amino and the like.
The prior art discloses a formaldehyde scavenger which is an amino acid under alkaline conditions. The formaldehyde scavenger can be carried on paper and cloth, and can also be solid or aqueous solution. The formaldehyde scavenger is used for scavenging formaldehyde in the air, and can also be used for sealing formaldehyde release of furniture and decoration materials. The formaldehyde scavenger is tasteless, nontoxic, nonvolatile, safe and environment-friendly.
The prior art discloses a formaldehyde scavenger for an artificial board and a preparation method thereof, wherein the formaldehyde scavenger is a film forming material covered on the surface layer of the artificial board in a brushing, spraying or rolling way, and comprises the following components in percentage by weight: ethylene urea: 10-40%; film-forming agent: 20-30%; penetrant: 0.1-10%; accelerator (b): 0.1-10%; solvent water: 15-60%, the preparation method is simple, the ethylene urea is an effective component for removing free formaldehyde in the artificial board, the ethylene diamine, the urea and the water can be used for removing the free formaldehyde in the artificial board through simple operation, and the rest components are respectively dissolved in the water, so that the method not only can remove the free formaldehyde in the artificial board, but also can effectively prevent the free formaldehyde from overflowing, has the characteristics of high removal rate, strong timeliness, no secondary pollution and the like, and has social benefits.
The prior art discloses a method for preparing an environment-friendly formaldehyde scavenger by using natural substances, which is to crush aloe, chlorophytum comosum and ivy as raw materials and then use a supercritical method to prepare a liquid CO scavenger2The natural amino acid is extracted as a solvent under a supercritical state, and then the sodium dodecyl benzene sulfonate aqueous solution is added and stirred uniformly, so that the finished product of the environment-friendly formaldehyde scavenger is obtained. The preparation method has high extraction efficiency, high utilization rate of raw materials and environment-friendly extractant liquid CO2The method has the advantages of no pollution to surrounding human bodies and environment, no harm to human bodies due to natural extraction, short production period of the extraction process and easy continuous and stable production.
The existing formaldehyde scavenger has good air purification effect, but has poor formaldehyde removal effect and short formaldehyde removal duration when being used for the artificial board.
Disclosure of Invention
Therefore, the efficient and environment-friendly formaldehyde scavenger provided by the embodiment of the invention has a good scavenging effect on the artificial board and has long formaldehyde scavenging duration.
In order to achieve the above object, an embodiment of the present invention provides the following:
in a first aspect of embodiments of the present invention, a high-efficiency and environment-friendly formaldehyde scavenger is provided, which is characterized in that the formaldehyde scavenger comprises, by weight, 100 parts of a high-temperature steam-treated Y-type molecular sieve, 5 to 15 parts of nano titanium dioxide, 1 to 20 parts of sesbania gum, 1000 parts of acetic acid-sodium acetate buffer solution, 4 to 20 parts of nano iron oxide, 5 to 30 parts of nano molybdenum disulfide, 100 parts of organic solvent, and 50 to 200 parts of a foaming agent.
Optionally, the preparation method of the high-temperature steam-treated Y-type molecular sieve comprises the following steps: mixing SiO2/Al2O3The Y-type molecular sieve with the molar ratio of 5.1-20 is treated for 5-180 hours under the steam of 500-1000 ℃.
Optionally, the particle size of the nano titanium dioxide, the nano iron oxide and the nano molybdenum disulfide is 1-100 nanometers.
Optionally, by weight, the formaldehyde scavenger comprises 100 parts of a Y-type molecular sieve subjected to high-temperature steam treatment, 8-12 parts of nano titanium dioxide, 5-18 parts of sesbania gum, 2500 parts of acetic acid-sodium acetate buffer solution, 6-18 parts of nano iron oxide, 8-20 parts of nano molybdenum disulfide, 200-400 parts of an organic solvent and 70-160 parts of a foaming agent.
Optionally, the foaming agent is sodium lauryl sulfate.
Optionally, the pH value of the acetic acid-sodium acetate buffer solution is 4-6.
Optionally, the preparation method of the formaldehyde scavenger comprises the following steps: uniformly mixing the Y-shaped molecular sieve treated by high-temperature steam with nano titanium dioxide, nano iron oxide and nano molybdenum disulfide, and then grinding to obtain a powder material; uniformly mixing the pH acetic acid-sodium acetate buffer solution with the organic solvent, the foaming agent and the sesbania gum, adding the powder material at 40-60 ℃, uniformly stirring, and then cooling to room temperature.
Optionally, the organic solvent is ethanol and/or propanol.
According to the embodiment of the invention, the following advantages are provided
The inventor of the invention unexpectedly finds that the Y-type molecular sieve is treated by high-temperature water vapor and then mixed with the nano titanium dioxide, the nano iron oxide and the nano molybdenum disulfide for removing formaldehyde, so that the effective time and the removing effect of the formaldehyde remover can be prolonged. In addition, sesbania gum, acetic acid-sodium acetate buffer solution and organic solvent are added into the formaldehyde scavenger, so that the dispersion effect of the powder in the formaldehyde scavenger can be improved, and the spraying effect and the effect of contacting with the artificial board can be improved.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a high-efficiency environment-friendly formaldehyde scavenger, which comprises, by weight, 100 parts of a Y-type molecular sieve subjected to high-temperature steam treatment, 5-15 parts of nano titanium dioxide, 1-20 parts of sesbania gum, 1000-3000 parts of acetic acid-sodium acetate buffer solution, 4-20 parts of nano iron oxide, 5-30 parts of nano molybdenum disulfide, 100 parts of organic solvent and 50-200 parts of foaming agent; preferably, the formaldehyde scavenger comprises 100 parts by weight of Y-type molecular sieve treated by high-temperature steam, 8-12 parts by weight of nano titanium dioxide, 5-18 parts by weight of sesbania gum, 2500 parts by weight of acetic acid-sodium acetate buffer solution, 6-18 parts by weight of nano iron oxide, 8-20 parts by weight of nano molybdenum disulfide, 200-400 parts by weight of organic solvent and 70-160 parts by weight of foaming agent. The inventor of the invention unexpectedly finds that the Y-type molecular sieve is treated by high-temperature water vapor and then mixed with the nano titanium dioxide, the nano iron oxide and the nano molybdenum disulfide for removing formaldehyde, so that the effective time and the removing effect of the formaldehyde remover can be prolonged. In addition, sesbania gum, acetic acid-sodium acetate buffer solution and organic solvent are added into the formaldehyde scavenger, so that the dispersion effect of the powder in the formaldehyde scavenger can be improved, and the spraying effect and the effect of contacting with the artificial board can be improved.
In the invention, the Y-type molecular sieve is a molecular sieve with an FAU structure, the interior of the molecular sieve is provided with a nano-scale pore channel, formaldehyde can enter the molecular sieve for catalytic reaction, the Y-type molecular sieve can generate a large number of micron-scale pore channels after being treated by high-temperature water vapor, so that the nano-titanium dioxide, the nano-iron oxide and the nano-molybdenum disulfide can enter the molecular sieve, and the formaldehyde is in contact with the catalyst center of the molecular sieve and the active sites of each nano-particle for rapid reaction, thereby accelerating the process of formaldehyde → formic acid → water + carbon dioxide, and improving the quality of the productAnd (4) catalytic effect. Specifically, the preparation step of the high-temperature water vapor-treated Y-type molecular sieve may include: mixing SiO2/Al2O3The Y-type molecular sieve with the molar ratio of 5.1-20 is treated for 5-180 hours under the steam of 500-1000 ℃, the steam treatment can be carried out in a hydrothermal roasting furnace, the flow rate of the steam and the weight ratio of the Y-type molecular sieve are 5-15 kg water/(kg molecular sieve. hours), and the Y-type molecular sieve after the steam treatment can be washed by dilute hydrochloric acid to remove aluminum fragments.
In the invention, the nanometer titanium dioxide, the nanometer iron oxide and the nanometer molybdenum disulfide are well known to those skilled in the art, the nanometer titanium dioxide and the nanometer molybdenum disulfide can synergistically act to promote the oxidation of formaldehyde into formic acid, the nanometer iron oxide can accelerate the catalyst formic acid into water and carbon dioxide together with the Y-type molecular sieve, so that the effective time for removing formaldehyde is prolonged, and the particle size of the nanometer titanium dioxide, the nanometer iron oxide and the nanometer molybdenum disulfide can be 1-100 nanometers, preferably 1-50 nanometers, and more preferably 1-20 nanometers.
In the invention, the foaming agent is used for improving the foaming effect of the spraying of the scavenging agent and increasing the contact area of each powder and the artificial board, and the foaming agent can be sodium dodecyl sulfate. The sesbania gum can improve the viscosity of the formaldehyde scavenger so as to improve the dispersion effect of each powder in the formaldehyde scavenger, and the acetic acid-sodium acetate buffer solution can be used for keeping the pH value of the formaldehyde scavenger stable so as to keep the viscosity of the formaldehyde scavenger in a proper range, for example, the pH value of the acetic acid-sodium acetate buffer solution can be 4-6. The organic solvent can be matched with a foaming agent to improve the foaming effect of the formaldehyde scavenger, is favorable for quickly drying the formaldehyde scavenger after being sprayed and accelerating the performance of the function of the formaldehyde scavenger, and can be ethanol and/or propanol
In the present invention, the preparation of the formaldehyde scavenger may include: uniformly mixing the Y-shaped molecular sieve treated by high-temperature steam with nano titanium dioxide, nano iron oxide and nano molybdenum disulfide, and then grinding to obtain a powder material; uniformly mixing the pH acetic acid-sodium acetate buffer solution with the organic solvent, the foaming agent and the sesbania gum, adding the powder material at 40-60 ℃, uniformly stirring, and then cooling to room temperature.
The invention will now be further illustrated by the following examples, but is not limited thereto.
In the examples, the Y-type molecular sieve was obtained from NaY-type molecular sieve available from Nay environmental protection technology Co., Ltd, Mingze, Henan, and the silica-alumina ratio was 5.3; the titanium dioxide, the nano iron oxide and the nano molybdenum trisulfide are all purchased from Beijing Deke island gold science and technology Limited, the nano titanium oxide is anatase type nano titanium dioxide, the average grain diameter is 5nm, the nano iron oxide is nano gamma-iron oxide, the average grain diameter is 20nm, and the average grain diameter of the nano molybdenum trisulfide is 50 nm; sesbania gum, ethanol and sodium dodecyl sulfate are all analytically pure; the acetic acid in the acetic acid-sodium acetate buffer solution is 1mol/L, and the pH value is 5.
Example 1
15 g of NaY type molecular sieve is put into a crucible and slowly heated to 800 ℃ in a roasting furnace (Malvern company), then water vapor is introduced at the speed of 8 kg of water/(kg of molecular sieve. h) for treatment for 20 h, then the temperature is reduced to room temperature, and the Y type molecular sieve treated by the high-temperature water vapor is obtained by washing, filtering and drying the mixture by using 1 weight percent of dilute hydrochloric acid. 10 g of the Y-type molecular sieve treated by high-temperature steam, 1 g of nano titanium dioxide, 1 g of nano iron oxide and 1 g of nano molybdenum disulfide are mixed and ground for 5 minutes by adopting a mortar, so as to obtain a powder material. Mixing 200 g of acetic acid-sodium acetate buffer solution, 1 g of sesbania gum, 20 g of ethanol and 6 g of lauryl sodium sulfate, uniformly stirring, heating to 45 ℃ in a water bath, adding the powder material, uniformly stirring to form uniform liquid, and cooling to room temperature to obtain the formaldehyde scavenger S1.
Example 2
This example was substantially the same as example 1 except that the temperature of the hydrothermal treatment of the NaY type molecular sieve was 500 ℃ and the time was 60 hours, to obtain a formaldehyde scavenger S2.
Example 3
This example was substantially the same as example 1 except that the temperature of the hydrothermal treatment with the NaY type molecular sieve was 1000 ℃ for 10 hours, to obtain a formaldehyde scavenger S3.
Example 4
The present example is substantially the same as example 1, except that the weight ratio of the Y-type molecular sieve subjected to high-temperature steam treatment, the nano titanium dioxide, the sesbania gum, the acetic acid-sodium acetate buffer solution, the nano iron oxide, the nano molybdenum disulfide, the organic solvent and the foaming agent is 100:5:1:1000:4:5:100:50, and the formaldehyde scavenger S4 is obtained.
Example 5
The present example is substantially the same as example 1, except that the weight ratio of the Y-type molecular sieve subjected to high-temperature steam treatment, the nano titanium dioxide, the sesbania gum, the acetic acid-sodium acetate buffer solution, the nano iron oxide, the nano molybdenum disulfide, the organic solvent and the foaming agent is 100:15:20:3000:20:30:500:200, and the formaldehyde scavenger S5 is obtained.
Comparative example 1
Substantially the same as in example 1 except that the high-temperature steam-treated Y-type molecular sieve was replaced with the same weight of NaY-type molecular sieve (calcined at 450 ℃ C. for 3 hours), the formaldehyde scavenger D1 was obtained.
Comparative example 2
Substantially the same as in example 1 except that the nano titanium dioxide was replaced with nano iron oxide of the same weight, the formaldehyde scavenger D2 was obtained.
Comparative example 3
Substantially the same as in example 1, except that the nano iron oxide was replaced with nano molybdenum disulfide of the same weight, the formaldehyde scavenger D3 was obtained.
Comparative example 3
Basically the same as example 1, except that the nano molybdenum disulfide was replaced with nano titanium dioxide of the same weight, the formaldehyde scavenger D4 was obtained.
Comparative example 5
Substantially the same as in example 1, except that sesbania gum was replaced with the same weight of acetic acid-sodium acetate buffer solution, the formaldehyde scavenger D5 was obtained.
Comparative example 6
Substantially the same as in example 1 except that the organic solvent was replaced with the same weight of acetic acid-sodium acetate buffer solution, a formaldehyde scavenger D6 was obtained.
Comparative example 7
Substantially the same as in example 1 except that the foaming agent was replaced with the same weight of acetic acid-sodium acetate buffer solution, the formaldehyde scavenger D7 was obtained.
Comparative example 8
Substantially the same as in example 1 except that the acetic acid-sodium acetate buffer solution was replaced with the same weight of water, a formaldehyde scavenger D8 was obtained.
The formaldehyde removal rate is measured by adopting a test method of removing capacity of formaldehyde removing agents for artificial boards and products thereof with GB/T35239 and 2017, the standing time after spraying is respectively 24 hours, 48 hours, 120 hours, 240 hours and 480 hours according to the national standard during the test, and the sealing time of the sprayed sample and the comparative sample in a vinyl resin sealing bag is 24 hours. The artificial board has water content of 14.5%, size of 1.8cm × 10cm × 10cm, and density of 0.65cm3The formaldehyde emission was 15.4mg/100 g. The specific test results are shown in table 1.
TABLE 1
As can be seen from Table 1, the formaldehyde scavenger provided by the invention has good formaldehyde scavenging effect on the artificial board and has long lasting effective time.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (2)
1. The efficient and environment-friendly formaldehyde scavenger is characterized by comprising 100 parts by weight of high-temperature steam treated formaldehyde scavengerThe preparation method comprises the following steps of Y-type molecular sieve, 5-15 parts by weight of nano titanium dioxide, 1-20 parts by weight of sesbania gum, 3000 parts by weight of acetic acid-sodium acetate buffer solution of 1000-20 parts by weight of nano iron oxide, 5-30 parts by weight of nano molybdenum disulfide, 500 parts by weight of organic solvent of 100-200 parts by weight of foaming agent, wherein the preparation step of the Y-type molecular sieve treated by high-temperature water vapor comprises the following steps: mixing SiO2/Al2O3Treating the Y-type molecular sieve with the molar ratio of 5.1-20 for 5-180 hours under the steam of 500-1000 ℃;
the particle size of the nano titanium dioxide, the nano iron oxide and the nano molybdenum disulfide is 1-100 nanometers; the foaming agent is sodium dodecyl sulfate; the pH value of the acetic acid-sodium acetate buffer solution is 4-6; the preparation method of the formaldehyde scavenger comprises the following steps: uniformly mixing the Y-shaped molecular sieve treated by high-temperature steam with nano titanium dioxide, nano iron oxide and nano molybdenum disulfide, and then grinding to obtain a powder material; uniformly mixing the pH acetic acid-sodium acetate buffer solution with an organic solvent, a foaming agent and sesbania gum, adding the powder material at 40-60 ℃, uniformly stirring, and then cooling to room temperature; the organic solvent is ethanol and/or propanol.
2. The formaldehyde scavenger as defined in claim 1, wherein the formaldehyde scavenger comprises 100 parts by weight of Y-type molecular sieve treated by high-temperature steam, 8-12 parts by weight of nano-titanium dioxide, 5-18 parts by weight of sesbania gum, 2500 parts by weight of acetic acid-sodium acetate buffer solution 1500-18 parts by weight of nano-iron oxide, 8-20 parts by weight of nano-molybdenum disulfide, 200-400 parts by weight of organic solvent and 70-160 parts by weight of foaming agent.
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| US4952385A (en) * | 1987-03-02 | 1990-08-28 | Georgia Tech Research Corp. | Ferrisilicate molecular sieve and use as a catalyst |
| CN101590403A (en) * | 2009-06-11 | 2009-12-02 | 上海交通大学 | Multifunctional coupling catalyst and preparation method thereof |
| CN101979480B (en) * | 2010-10-27 | 2013-10-30 | 合肥学院 | Molybdenum disulfide nanosphere/titanium dioxide composite material and preparation method thereof |
| CN103418421B (en) * | 2012-05-17 | 2015-12-16 | 北京宝塔三聚能源科技有限公司 | A kind of Catalysts and its preparation method synthesizing paraxylene for coking benzene and methanol alkylation |
| CN104888701A (en) * | 2015-05-21 | 2015-09-09 | 安徽凤凰滤清器股份有限公司 | Adsorbent capable of purifying air |
| CN106110884A (en) * | 2016-07-13 | 2016-11-16 | 吴美燕 | A kind of preparation method with the air purifying preparation removing harmful gas and abnormal flavour |
| CN106824256B (en) * | 2017-03-28 | 2020-01-17 | 上海鼎颉纳米技术有限公司 | Formaldehyde degradation catalyst and preparation method thereof |
| CN107626204A (en) * | 2017-11-16 | 2018-01-26 | 南京市雨花台区绿宝工业设计服务中心 | A kind of preparation method of formaldehyde scavenger |
| CN108970397A (en) * | 2018-08-09 | 2018-12-11 | 四川舒慈新材料有限公司 | A kind of air purifying composition, preparation and preparation method thereof |
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