CN108939910B - Sticking film for catalyzing and oxidizing indoor formaldehyde and preparation and application methods thereof - Google Patents
Sticking film for catalyzing and oxidizing indoor formaldehyde and preparation and application methods thereof Download PDFInfo
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Abstract
The invention discloses a sticking film for catalyzing and oxidizing indoor formaldehyde and a preparation and application method thereof, which are obtained by using a nano mineral material (natural manganese-rich limonite ore or attapulgite clay loaded manganese oxide) as a raw material, adding a binder to process the raw material into a coating, and coating the coating on the surface of paper, a plastic film or a fiber fabric; when in use, the adhesive tape is adhered, hung or flatly placed at a required position. The adhesive film can completely convert formaldehyde into carbon dioxide and water at room temperature, and is convenient to use.
Description
Technical Field
The invention belongs to the technical field of air purification, and particularly relates to a film for catalyzing and oxidizing formaldehyde at room temperature, and preparation and application methods thereof
Background
Formaldehyde (HCHO) is one of the main indoor air pollutants, has strong irritation and human toxicity to eye, nasal cavity and respiratory mucosa tissues, and is listed as a first-class carcinogenic substance by the international cancer center and the world health organization. Is the third marked air pollution period of 'indoor air pollution' after the pollution of 'soot type' and 'photochemical smog type' which is generated after the industrial revolution. Therefore, how to eliminate the formaldehyde pollutants efficiently, cheaply and without secondary pollution has important significance on human health. Currently, there are three types of indoor formaldehyde pollution control: the source controls and enhances ventilation and air purification. Due to the reasons of cost of substitutes and the like, formaldehyde as a preservative, an additive and a binder component is still widely applied to various industrial products and building materials in the future, and the pollution of formaldehyde to indoor air is difficult to completely eliminate from the source. Even if the ventilation is enhanced, the indoor air is inevitably generatedThe problem of excessive formaldehyde (GB/T18883-2002, limit value of indoor air formaldehyde concentration is 0.1mg/m3). The purification of formaldehyde in indoor air becomes a technical requirement for ensuring the quality of indoor air and protecting the health of people.
The mature technology for purifying formaldehyde at room temperature in the current market is as follows: adsorption, photocatalytic catalyst and catalytic oxidation. An adsorption method, for example, patent CN104209093 discloses a preparation method of a modified activated carbon fiber for formaldehyde adsorption, which comprises the steps of soaking the activated carbon fiber in 20% -40% hydrogen peroxide solution for 2-4h, air-drying, and drying at 120 ℃ to obtain the modified activated carbon fiber formaldehyde adsorbent. The activated carbon material can only purify formaldehyde by a physical adsorption method, can not effectively eliminate the formaldehyde, and has the problems of limited adsorption capacity, secondary pollution caused by easy desorption of the formaldehyde at room temperature and the like. A photocatalysis catalyst method, for example, patent CN103446878B discloses a formaldehyde-removing wallpaper based on photocatalysis technology of an additional ultraviolet light source and a preparation method thereof, which comprises the following steps: the device comprises a substrate layer, a conductive layer, a lead, a semiconductor refrigerating layer, a titanium dioxide photocatalytic layer, an ultraviolet LED lamp and active carbon particles. After the formaldehyde removing wallpaper is connected with a power supply device, the semiconductor refrigeration layer can form air heat flow, the formaldehyde adsorption process is accelerated, and then the titanium dioxide photocatalysis layer is utilized to decompose formaldehyde into carbon dioxide and water. Although the photocatalytic catalyst method can realize the degradation elimination of formaldehyde at room temperature, the photocatalytic catalyst method has the problems of needing an ultraviolet light excitation light source, low utilization efficiency of visible light and the like, and limits the application range of the photocatalytic catalyst method. The catalytic oxidation method can completely degrade formaldehyde into water and carbon dioxide at room temperature without illumination or other energy input sources, and is currently recognized as a formaldehyde purification technology with the most application potential.
Patent CN1795970A discloses a catalyst capable of completely oxidizing formaldehyde at room temperature with high efficiency. The main active components of the catalyst are metal oxide and a small amount of noble metal, wherein the metal oxide is a main component and a carrier of the catalyst, and the noble metal is loaded on the metal oxide carrier. The metal oxide component is at least one of the following metal oxides: cerium dioxide, calcium oxide, magnesium oxide, aluminum oxide, zirconium dioxide, titanium dioxide, lanthanum oxide, zinc oxide and copper oxide; the noble metal group is: gold, platinum, rhodium, palladium.
Patent CN102198404A discloses a silver-loaded nano manganese dioxide catalyst and a preparation method thereof. The active component of the catalyst is a silver-doped manganese dioxide molecular sieve (OMS-2) which is formed by doping metallic silver into a manganese dioxide pore channel structure. The loading of the metallic silver is between 1% and 25%. The catalyst can completely oxidize the formaldehyde into carbon dioxide and water at a low temperature (0-120 ℃), thereby achieving the effect of purifying the formaldehyde.
Patent CN106010057A discloses a preparation method of formaldehyde-removing paint. The coating comprises: titanium oxide and manganese oxide are taken as formaldehyde elimination agents, graphene oxide is taken as formaldehyde adsorbent, polyvinyl alcohol is taken as dispersing agent, and acrylic emulsion and surfactant are compounded to prepare the formaldehyde removing coating. The coating achieves the purpose of adsorbing and degrading formaldehyde at room temperature by using the composite graphene oxide as an adsorbent and using titanium oxide and manganese oxide as formaldehyde catalysts.
Patent CN107187159A discloses a degradable formaldehyde automobile film with good adhesion. The formaldehyde-degrading automobile film comprises a PET composite film and an ETFE composite film, wherein a formaldehyde-degrading catalyst (nano titanium dioxide and nano metal oxide) is loaded between the PET composite film and the ETFE composite film.
Most of the catalysts capable of catalyzing, oxidizing and degrading formaldehyde at room temperature are noble metal-based catalysts, which are expensive and the preparation method of the oxide used as the carrier is complicated. The non-noble metal-based catalysts such as formaldehyde purifying paint, film pasting and the like are low in price, but have the problems of high ignition temperature for converting formaldehyde, need of additionally doping a photocatalyst catalyst (titanium dioxide), complex preparation process, incomplete formaldehyde conversion at room temperature and the like.
Therefore, the search for a room temperature formaldehyde catalyst which is low in price, simple in process and high in efficiency has remarkable economic and environmental benefits.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the sticking film for catalyzing and oxidizing the formaldehyde at room temperature, which has the advantages of convenient production, low cost and convenient use, and the preparation and application methods thereof, and aims to realize the purification of the low-concentration formaldehyde at room temperature.
In order to solve the problems of the prior art, the invention adopts the following technical scheme:
the invention firstly discloses a film for catalyzing and oxidizing indoor formaldehyde, which is characterized in that: the preparation method comprises the steps of taking a nano mineral material as a catalyst for catalyzing and oxidizing formaldehyde at room temperature, adding a binder into the nano mineral material to prepare a coating, and coating the coating on the surface of one side or both sides of paper, a plastic film or a fiber fabric to obtain a single-side or double-side adhesive film for catalyzing and oxidizing the formaldehyde in the room; the sticking film can adsorb and catalytically oxidize and degrade indoor low-concentration formaldehyde at room temperature.
Wherein the nano mineral material is powder of natural manganese-rich limonite ore or powder of attapulgite clay loaded manganese oxide.
When the nano mineral material is powder of natural manganese-rich limonite ore, the method for preparing the film for catalyzing formaldehyde in the oxidation chamber by using the nano mineral material is marked as a method A, and the method comprises the following steps:
(1) selecting manganese-rich limonite ore as a nano mineral material; the manganese-rich limonite ore has a nano-micron hierarchical pore structure and the specific surface area is not less than 25m2The material is composed of nano goethite and nano manganese oxide minerals with the total mass percent of not less than 80%, the mass ratio of the iron oxide to the manganese oxide is 1-6:1, and the crystal diameters of the nano goethite and the manganese oxide are not more than 50 nm;
selecting water-soluble glue as a film-forming binder;
(2) grinding the selected manganese-rich limonite ore into powder of 200 meshes and 400 meshes;
(3) mixing and stirring the mineral powder and the water-soluble glue uniformly according to the mass ratio of the mineral powder to the water-soluble glue of 1:4-10 to obtain a mixture;
adding attapulgite clay or bentonite serving as a suspension thickening agent into the mixture, and stirring and grinding for 1-2h to obtain a liquid coating; the suspension thickening agent accounts for 3-10% of the mass of the mixture;
(4) coating the liquid coating on one side surface of paper, a plastic film or a fiber fabric in a brush coating or roll coating manner to obtain a single-side pad pasting for formaldehyde in the catalytic oxidation chamber;
or: and coating the liquid coating on the two sides of paper, plastic film or fiber fabric in a brush coating or roll coating manner to obtain the double-sided adhesive film for catalyzing and oxidizing the formaldehyde in the chamber.
When the nano mineral material is attapulgite clay loaded manganese oxide powder, the method for preparing the film for catalyzing formaldehyde in the oxidation chamber by using the nano mineral material is marked as method B, and comprises the following steps:
(1) selecting attapulgite clay with the mass percent of attapulgite not less than 50% and the total mass percent of attapulgite and montmorillonite not less than 90%;
selecting water-soluble glue as a film-forming binder;
(2) mixing attapulgite clay and water according to the mass percentage of 1:10-50, aging for 2-24h, and stirring for 0.5-2h to obtain a mixed solution A;
adding a potassium permanganate solution with the mass concentration of 5-10% into the mixed solution A to enable the potassium permanganate to account for 1-50% of the weight of the attapulgite clay, and stirring for 10-30min to obtain a mixed solution B;
adding a reducing agent into the mixed solution B, stirring for 1-4h, adding alkali liquor to adjust the pH value to 9-11, continuously stirring for 1-5h, standing and aging for 2-10h to obtain a mixed solution C;
dehydrating, washing, drying and grinding the mixed solution C to obtain powder of attapulgite clay loaded with manganese oxide of 200-400 meshes;
(3) mixing and stirring the mineral powder and the water-soluble glue uniformly according to the mass ratio of the mineral powder to the water-soluble glue of 1:4-10 to obtain a mixture;
adding attapulgite clay or bentonite serving as a suspension thickening agent into the mixture, and stirring and grinding for 1-2h to obtain a liquid coating; the suspension thickening agent accounts for 3-10% of the mass of the mixture;
(4) coating the liquid coating on one side surface of paper, a plastic film or a fiber fabric in a brush coating or roll coating manner to obtain a single-side pad pasting for formaldehyde in the catalytic oxidation chamber;
or: and coating the liquid coating on the two sides of paper, plastic film or fiber fabric in a brush coating or roll coating manner to obtain the double-sided adhesive film for catalyzing and oxidizing the formaldehyde in the chamber.
The water-soluble glue in the method A and the method B is 107 glue or polyvinyl alcohol aqueous solution with the mass concentration of 2-8%.
The reducing agent in the method B is any one of methanol, ammonium oxalate or divalent manganese salt. When the reducing agent is methanol, the mass ratio of the addition amount of the methanol to the potassium permanganate is 5-15: 1; when the reducing agent is ammonium oxalate, the mass ratio of the addition amount of the ammonium oxalate to the potassium permanganate is 1: 1-5; when the reducing agent is a divalent manganese salt solution, the mass concentration of the divalent manganese salt solution is 1-10%, and the addition amount is 8:5 according to the molar ratio of the divalent manganese salt to the potassium permanganate.
The application method of the adhesive film for catalyzing and oxidizing formaldehyde at room temperature comprises but is not limited to:
when the film is a single-side film, a non-drying adhesive layer is arranged on the other side surface of the paper, the plastic film or the fiber fabric, and then the non-drying adhesive layer is used by pasting, or the non-drying adhesive layer is directly used by pasting through glue, and the specific mode is as follows: when the furniture is manufactured, the single-sided adhesive film is adhered to the surface of a used blockboard, a shaving board or a fiber board through a non-drying adhesive layer on the other side or glue; or the single-sided adhesive film is adhered to the inner surface and/or the outer surface of the indoor furniture through the non-drying adhesive layer on the other surface or glue;
when the film is a double-sided film, the film is hung or flatly placed for use, and the specific mode is as follows: the double-faced film is hung on the wall, the back of a door and/or the surface of a shutter, or is flatly placed on the indoor floor and/or the top surface of furniture.
The invention has the beneficial effects that:
1. the adhesive film for catalyzing and oxidizing indoor formaldehyde can completely degrade indoor formaldehyde with low concentration of less than 5ppm into carbon dioxide and water at 15-40 ℃, has higher activity of catalyzing and oxidizing formaldehyde than the existing widely used noble metal-based formaldehyde catalyst, and has the advantages of simple preparation method, low price and the like.
2. Compared with non-noble metal-based formaldehyde purification catalysts (such as titanium dioxide and active carbon) widely applied to the market, the formaldehyde purification catalyst has the advantages of no need of an additional excitation light source, no secondary pollution in formaldehyde purification, no need of frequent replacement, long service life and the like, and can be widely used for decoration and building materials or active carbon bags.
3. The raw material of the film for catalyzing and oxidizing the formaldehyde in the room prepared by the invention is derived from natural specific type manganese-rich limonite ore (figure 1), has a natural nano-micron hierarchical pore structure, and has a specific surface area of not less than 25m2The catalyst is mainly composed of nano goethite and nano manganese oxide (figure 2), the crystal diameters of the goethite and the manganese oxide are not more than 50nm, part of manganese in the goethite exists in a similar substitution mode, and the natural iron-manganese nano composite material is composed of the manganese-containing goethite and the manganese oxide (figure 3), so that the catalyst has the efficiency of efficiently catalyzing and oxidizing formaldehyde.
4. The raw material of the film for catalyzing and oxidizing the indoor formaldehyde is derived from an attapulgite clay loaded manganese oxide catalyst. Through the nano composite precipitation, the particle size of the attapulgite manganese-loaded composite catalyst is less than 100nm (figure 4), and the surface of the attapulgite rod-shaped crystal beam is uniformly coated with the manganese oxide (figure 5). The attapulgite has special nano rod-shaped structure effect, large internal and external surface area and high stacking porosity, has certain adsorption capacity on polar VOCs molecules such as formaldehyde, and can adsorb and catalyze formaldehyde to be oxidized into carbon dioxide and water at room temperature by loading manganese oxide with catalytic capacity and combining adsorption and catalytic oxidation technologies in order.
5. The catalytic oxidation formaldehyde adhesive film does not contain toxic and harmful elements, and can avoid secondary pollution possibly brought in the final treatment process of the adhesive film.
Drawings
Fig. 1 is a photograph of a natural manganese-rich limonite ore used in example 1.
Fig. 2 is an XRD pattern of the natural manganese-rich limonite ore used in example 1, showing characteristic diffraction peaks for goethite, weak diffraction peaks showing low crystallinity, consistent with the nanometer size in the TEM image of fig. 3.
FIG. 3 is a Transmission Electron Micrograph (TEM) of the natural manganese-rich limonite ore used in example 1 showing iron and manganese oxide particle sizes less than 50 nm.
FIG. 4 is a Transmission Electron Microscope (TEM) image of the attapulgite clay-supported manganese oxide prepared in example 2, showing that the catalyst particle size is less than 100 nm.
FIG. 5 is an energy spectrum analysis (EDS) of the attapulgite clay-supported manganese oxide prepared in example 2, showing that the manganese oxide is uniformly coated on the surface of the attapulgite rod-shaped crystal bundles.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, specific embodiments thereof will be described in detail with reference to the following examples. The following is merely exemplary and illustrative of the inventive concept and various modifications, additions and substitutions of similar embodiments may be made to the described embodiments by those skilled in the art without departing from the inventive concept or exceeding the scope of the claims defined thereby.
Example 1
In the embodiment, natural manganese-rich limonite ore powder is used as a nano mineral material, and the sticking film for formaldehyde in the catalytic oxidation chamber is prepared according to the following steps:
(1) the natural manganese-rich limonite ore (the photo is shown in figure 1, the XRD pattern is shown in figure 2, the TEM pattern is shown in figure 3) is collected, and the main chemical composition is as follows: fe2O368％、MnO217％、SiO26.4％、Al2O31.4 percent, 7.2 percent of loss on ignition, 4:1 mass ratio of iron oxide to manganese oxide, about 91 percent of nano goethite and nano manganese oxide, and the balance of amorphous SiO2And quartz; has a nano-micron hierarchical pore structure and the specific surface area of the ore is 28m2/g。
And selecting a polyvinyl alcohol aqueous solution with the mass concentration of 5% as the water-soluble glue.
(2) The selected manganese-rich limonite ore is ground into 300-mesh powder.
(3) Mixing and stirring the mineral powder and the water-soluble glue uniformly according to the mass ratio of the mineral powder to the water-soluble glue of 1:4 to obtain a mixture;
adding attapulgite clay serving as a suspension thickening agent into the mixture, and stirring and grinding for 2 hours to obtain a liquid coating; the suspension thickening agent accounts for 3% of the mass of the mixture;
(4) and coating the liquid coating on one side of the plastic film in a brush coating and roll coating manner, drying and cutting to obtain the single-sided adhesive film for formaldehyde in the catalytic oxidation chamber.
In order to test the formaldehyde purifying performance of the film, the catalytic oxidation reaction of the film on formaldehyde was performed at room temperature as follows:
the adhesive film in this example was cut into a size of 1m × 1m, and was attached to a 4m × 5m × 2.8m closed space wall by glue, and the same room to which no adhesive film was attached was used as a control group. And detecting the concentration of formaldehyde in the room by using a formaldehyde detector.
The results show that: the original formaldehyde concentration of the closed space is 1.68mg/m3. After 24h, the formaldehyde concentration of the closed space with the film of the embodiment is lower than 0.01mg/m3While the concentration of formaldehyde in the closed space to which the patch of this example was not attached was 1.54mg/m3. The patch of this example was demonstrated to exhibit excellent catalytic activity.
Example 2
In the embodiment, attapulgite clay loaded manganese oxide powder is used as a nano mineral material, and the sticking film for catalyzing and oxidizing indoor formaldehyde is prepared according to the following steps:
(1) collecting attapulgite clay with the mass percent of 65 percent of attapulgite and the total mass percent of 90 percent of attapulgite and montmorillonite, crushing and sieving with a 200-mesh sieve;
glue 107 was chosen as the water soluble glue.
(2) Mixing attapulgite clay and water according to the mass percentage of 1:20, aging for 24h, and stirring at high speed for 2h to obtain a mixed solution A;
adding a potassium permanganate solution with the mass concentration of 10% into the mixed solution A to enable the potassium permanganate to account for 30% of the attapulgite clay, and stirring for 30min to obtain a mixed solution B;
adding a reducing agent methanol (the mass ratio of the added methanol to the potassium permanganate is 5:1) into the mixed solution B, stirring for 4h, adding alkali liquor to adjust the pH value to 9-10, continuing stirring for 3h, standing and aging for 10h to obtain a mixed solution C;
dehydrating, washing, drying and grinding the mixed solution C to obtain 200-mesh attapulgite clay supported manganese oxide powder;
FIG. 4 is a Transmission Electron Microscope (TEM) image of attapulgite clay loaded manganese oxide, showing that the catalyst particle size is less than 100 nm. Fig. 5 is an energy spectrum analysis (EDS) of the attapulgite clay loaded with manganese oxide, showing that the manganese oxide is uniformly coated on the surface of the attapulgite rod-shaped crystal bundle.
(3) Mixing and stirring the mineral powder and the water-soluble glue uniformly according to the mass ratio of the mineral powder to the water-soluble glue of 1:10 to obtain a mixture;
adding attapulgite clay serving as a suspension thickening agent into the mixture, and stirring and grinding for 2 hours to obtain a liquid coating; wherein the suspension thickening agent accounts for 5% of the mass of the mixture;
(4) and coating the liquid coating on one side of the plastic film in a brush coating manner, drying and cutting to obtain the sticking film for catalyzing and oxidizing the formaldehyde in the chamber.
In order to test the formaldehyde purifying performance of the film, the catalytic oxidation reaction of the film on formaldehyde was performed at room temperature as follows: the film in the embodiment is pasted on the surface of a 60 cm-40 cm blockboard, and the blockboard pasted with the film is placed at the formaldehyde concentration of 1.5mg/m3And the length, the width and the height are 100cm x 60cm in the closed space. Detecting the formaldehyde concentration lower than 0.04mg/m by using a formaldehyde detector after 24 hours3。
The present invention is not limited to the above exemplary embodiments, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A preparation method of a film for catalyzing and oxidizing indoor formaldehyde is characterized by comprising the following steps: the preparation method comprises the steps of taking a nano mineral material as a catalyst for catalyzing and oxidizing formaldehyde at room temperature, adding a binder into the nano mineral material to prepare a coating, and coating the coating on the surface of one side or two sides of paper, a plastic film or a fiber fabric to obtain a single-side or double-side adhesive film for catalyzing and oxidizing the formaldehyde in the room; the nano mineral material is powder of natural manganese-rich limonite ore or powder of attapulgite clay loaded manganese oxide;
when the nano mineral material is powder of natural manganese-rich limonite ore, the preparation method of the adhesive film of formaldehyde in the catalytic oxidation chamber comprises the following steps:
(11) selecting manganese-rich limonite ore as a nano mineral material; the manganese-rich limonite ore has a nano-micron hierarchical pore structure and the specific surface area is not less than 25m2The material is composed of nano goethite and nano manganese oxide minerals with the total mass percent of not less than 80%, the mass ratio of the iron oxide to the manganese oxide is 1-6:1, and the crystal diameters of the nano goethite and the manganese oxide are not more than 50 nm;
selecting water-soluble glue as a film-forming binder;
(12) grinding the selected manganese-rich limonite ore into powder of 200 meshes and 400 meshes;
(13) mixing and stirring the mineral powder and the water-soluble glue uniformly according to the mass ratio of the mineral powder to the water-soluble glue of 1:4-10 to obtain a mixture;
adding attapulgite clay or bentonite serving as a suspension thickening agent into the mixture, and stirring and grinding for 1-2h to obtain a liquid coating; the suspension thickening agent accounts for 3-10% of the mass of the mixture;
(14) coating the liquid coating on one side surface of paper, a plastic film or a fiber fabric in a brush coating or roll coating manner to obtain a single-side pad pasting for formaldehyde in the catalytic oxidation chamber;
or: coating the liquid coating on the two sides of paper, plastic film or fiber fabric by brushing and rolling to obtain a double-sided adhesive film for catalyzing and oxidizing indoor formaldehyde;
when the nano mineral material is attapulgite clay loaded manganese oxide powder, the preparation method of the adhesive film for formaldehyde in the catalytic oxidation chamber comprises the following steps:
(21) selecting attapulgite clay with the mass percent of attapulgite not less than 50% and the total mass percent of attapulgite and montmorillonite not less than 90%;
selecting water-soluble glue as a film-forming binder;
(22) mixing attapulgite clay and water according to the mass percentage of 1:10-50, aging for 2-24h, and stirring for 0.5-2h to obtain a mixed solution A;
adding a potassium permanganate solution with the mass concentration of 5-10% into the mixed solution A to enable the potassium permanganate to account for 1-50% of the weight of the attapulgite clay, and stirring for 10-30min to obtain a mixed solution B;
adding a reducing agent into the mixed solution B, stirring for 1-4h, adding alkali liquor to adjust the pH value to 9-11, continuously stirring for 1-5h, standing and aging for 2-10h to obtain a mixed solution C;
dehydrating, washing, drying and grinding the mixed solution C to obtain powder of attapulgite clay loaded with manganese oxide of 200-400 meshes;
(23) mixing and stirring the mineral powder and the water-soluble glue uniformly according to the mass ratio of the mineral powder to the water-soluble glue of 1:4-10 to obtain a mixture;
adding attapulgite clay or bentonite serving as a suspension thickening agent into the mixture, and stirring and grinding for 1-2h to obtain a liquid coating; the suspension thickening agent accounts for 3-10% of the mass of the mixture;
(24) coating the liquid coating on one side surface of paper, a plastic film or a fiber fabric in a brush coating or roll coating manner to obtain a single-side pad pasting for formaldehyde in the catalytic oxidation chamber;
or: and coating the liquid coating on the two sides of paper, plastic film or fiber fabric in a brush coating or roll coating manner to obtain the double-sided adhesive film for catalyzing and oxidizing the formaldehyde in the chamber.
2. The method of claim 1, wherein: in the step (11) and the step (21), the water-soluble glue is 107 glue or a polyvinyl alcohol aqueous solution with the mass concentration of 2-8%.
3. The method of claim 1, wherein: in the step (22), the reducing agent is any one of methanol, ammonium oxalate or a divalent manganese salt solution.
4. The production method according to claim 3, characterized in that:
when the reducing agent is methanol, the mass ratio of the addition amount of the methanol to the potassium permanganate is 5-15: 1;
when the reducing agent is ammonium oxalate, the mass ratio of the addition amount of the ammonium oxalate to the potassium permanganate is 1: 1-5;
when the reducing agent is a divalent manganese salt solution, the mass concentration of the divalent manganese salt solution is 1-10%, and the addition amount is 8:5 according to the molar ratio of the divalent manganese salt to the potassium permanganate.
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| CN110292855A (en) * | 2019-07-05 | 2019-10-01 | 江苏清荷材料科技有限公司 | A kind of air purifying filter mesh and preparation method thereof for administering formaldehyde |
| CN110420635A (en) * | 2019-08-07 | 2019-11-08 | 山东卓高新材料有限公司 | A kind of indoor furniture formaldehyde closing catalysis material and preparation method thereof |
| CN111266129B (en) * | 2020-02-01 | 2021-04-23 | 浙江大学 | Solid-phase OMS-2 molecular sieve catalyst for room-temperature formaldehyde purification and preparation method thereof |
| CN111672478A (en) * | 2020-04-29 | 2020-09-18 | 南京尚易环保科技有限公司 | Formaldehyde-removing manganese oxide three-dimensional porous material and preparation method thereof |
| CN112851991A (en) * | 2021-01-08 | 2021-05-28 | 江苏厚生新能源科技有限公司 | Diaphragm and preparation method and application thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201633441U (en) * | 2010-04-12 | 2010-11-17 | 田颖刚 | Formaldehyde removing paster |
| CN105013502A (en) * | 2015-06-29 | 2015-11-04 | 中国科学院广州地球化学研究所 | Manganese-doped maghemite catalyst used for thermal catalytic oxidation of formaldehyde, and preparation method thereof |
| CN106311172A (en) * | 2016-08-31 | 2017-01-11 | 北京博浩致远科技有限责任公司 | Removing coating for indoor air purification and preparation method of removing coating |
| CN106988158A (en) * | 2017-05-03 | 2017-07-28 | 刘艳丽 | A kind of indoor air purification paster |
| CN107537473A (en) * | 2017-07-20 | 2018-01-05 | 中山大学 | A kind of nanometer Mn catalyst of room temperature catalytic oxidation formaldehyde and preparation method thereof |
| CN107617313A (en) * | 2017-11-07 | 2018-01-23 | 成都新柯力化工科技有限公司 | A kind of filtering glued membrane for the middle organic pollution that purifies the air of a room and preparation method thereof |
-
2018
- 2018-08-09 CN CN201810901482.6A patent/CN108939910B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201633441U (en) * | 2010-04-12 | 2010-11-17 | 田颖刚 | Formaldehyde removing paster |
| CN105013502A (en) * | 2015-06-29 | 2015-11-04 | 中国科学院广州地球化学研究所 | Manganese-doped maghemite catalyst used for thermal catalytic oxidation of formaldehyde, and preparation method thereof |
| CN106311172A (en) * | 2016-08-31 | 2017-01-11 | 北京博浩致远科技有限责任公司 | Removing coating for indoor air purification and preparation method of removing coating |
| CN106988158A (en) * | 2017-05-03 | 2017-07-28 | 刘艳丽 | A kind of indoor air purification paster |
| CN107537473A (en) * | 2017-07-20 | 2018-01-05 | 中山大学 | A kind of nanometer Mn catalyst of room temperature catalytic oxidation formaldehyde and preparation method thereof |
| CN107617313A (en) * | 2017-11-07 | 2018-01-23 | 成都新柯力化工科技有限公司 | A kind of filtering glued membrane for the middle organic pollution that purifies the air of a room and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 凹凸棒石吸附氧化催化剂对甲醛的脱除研究;李澜等;《环境科学学报》;20120731;第32卷(第7期);第1736-1742页 * |
| 铁矿石尾矿渣制备催化剂催化氧化甲醛;郑昭等;《过程工程学报》;20151015;第15卷(第5期);第871-875页 * |
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