CN116371359A - Formaldehyde adsorbent containing active manganese and preparation method thereof - Google Patents
Formaldehyde adsorbent containing active manganese and preparation method thereof Download PDFInfo
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 183
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 239000011572 manganese Substances 0.000 title claims abstract description 52
- 229910052748 manganese Inorganic materials 0.000 title claims abstract description 51
- 239000003463 adsorbent Substances 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 67
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 47
- 238000001035 drying Methods 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000011230 binding agent Substances 0.000 claims abstract description 11
- 238000004898 kneading Methods 0.000 claims abstract description 7
- 238000005303 weighing Methods 0.000 claims abstract description 7
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- 230000001070 adhesive effect Effects 0.000 claims abstract description 4
- 239000000843 powder Substances 0.000 claims abstract description 4
- 239000012798 spherical particle Substances 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims description 11
- 239000012286 potassium permanganate Substances 0.000 claims description 11
- 229940099596 manganese sulfate Drugs 0.000 claims description 9
- 235000007079 manganese sulphate Nutrition 0.000 claims description 9
- 239000011702 manganese sulphate Substances 0.000 claims description 9
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 claims description 9
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 7
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 7
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 7
- 238000005119 centrifugation Methods 0.000 claims description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 4
- 239000006228 supernatant Substances 0.000 claims description 4
- 239000003245 coal Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 150000002696 manganese Chemical class 0.000 claims description 2
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 abstract description 16
- 238000001179 sorption measurement Methods 0.000 abstract description 12
- 230000003197 catalytic effect Effects 0.000 abstract description 6
- 238000004108 freeze drying Methods 0.000 abstract description 4
- 230000003647 oxidation Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 7
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 6
- 239000000463 material Substances 0.000 description 5
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- 238000003756 stirring Methods 0.000 description 4
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- 230000002776 aggregation Effects 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002149 energy-dispersive X-ray emission spectroscopy Methods 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- -1 2:1 Chemical compound 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 230000010718 Oxidation Activity Effects 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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- 231100000053 low toxicity Toxicity 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3042—Use of binding agents; addition of materials ameliorating the mechanical properties of the produced sorbent
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- B01D2255/00—Catalysts
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Abstract
The invention discloses a formaldehyde adsorbent containing active manganese and a preparation method thereof. The formaldehyde adsorbent containing active manganese comprises the following components in parts by weight: 50 parts of loaded active manganese powder carbon; 50-70 parts of powdered carbon; 10-20 parts of adhesive; 160-180 parts of water. A method for preparing an active manganese-containing formaldehyde adsorbent, comprising: weighing active manganese powder carbon, powder carbon and binder according to a proportion, adding water, kneading, forming 3mm spherical particles by a granulator, and drying to obtain the formaldehyde adsorbent containing active manganese. The formaldehyde adsorbent containing active manganese provided by the invention has the advantages that the structure is reserved to the greatest extent through freeze drying, formaldehyde is decomposed by utilizing the catalytic oxidation function of manganese oxide, and meanwhile, the formaldehyde removal rate can be effectively improved by utilizing the physical adsorption of active carbon, so that the formaldehyde adsorbent containing active manganese has great market application value.
Description
Technical Field
The invention relates to the field of formaldehyde adsorption materials, in particular to a formaldehyde adsorbent containing active manganese and a preparation method thereof.
Background
Formaldehyde is one of the most common indoor air pollutants, and is mainly derived from household articles such as indoor furniture, paint, wallpaper and the like. At present, formaldehyde is mainly removed by physical adsorption and other methods, but the method has the defects of limited adsorption capacity, easy saturation and the like, needs to be replaced regularly and has low formaldehyde removal efficiency.
In consideration of practical application, the activated carbon is widely used as a catalyst carrier and an adsorbent component because of the characteristics of low cost and easy availability, and the high specific surface area and the developed pore structure of the activated carbon can promote the uniform dispersion of metal ions in the activated carbon on one hand and also show strong adsorption removal capability on gas pollutants on the other hand.
The prior art is still further replete with research into activated carbon-based formaldehyde adsorbents.
Disclosure of Invention
Based on this, the invention aims to provide a formaldehyde adsorbent containing active manganese and a preparation method thereof.
In a first aspect, the invention provides a formaldehyde adsorbent containing active manganese, comprising, in parts by weight:
50 parts of loaded active manganese powder carbon;
50-70 parts of powdered carbon;
10-20 parts of adhesive;
160-180 parts of water.
In one embodiment, the method for preparing the activated manganese powder-loaded carbon comprises the following steps: mixing 100 parts of potassium permanganate solution and 50 parts of manganese sulfate solution, regulating the pH value to 9, adding 20 parts of powdered carbon, turning over and mixing for 10 hours, centrifuging by a centrifugal machine, washing by pure water, repeating the operation of centrifugal washing for 4-5 times, pouring out supernatant and drying to obtain the loaded active manganese powdered carbon.
In one embodiment of the above technical scheme, the concentration of the potassium permanganate solution is 0.228mol/L.
In one embodiment of the above technical scheme, the concentration of the manganese sulfate solution is 0.66mol/L.
In one embodiment, the centrifugation conditions are as follows: the centrifugation speed is 5000r/min, and the time is 5min.
In one embodiment, the drying conditions are as follows: drying by using a freeze dryer at the drying temperature of minus 60 ℃ for 8 to 12 hours.
In one embodiment, the powdered carbon is coal-based carbon powder.
In one embodiment of the above technical solution, the binder is one of sodium carboxymethyl cellulose, and polyvinyl alcohol.
In a second aspect, the present invention provides a method for preparing an active manganese-containing formaldehyde adsorbent, for preparing an active manganese-containing formaldehyde adsorbent as described in any one of the above, comprising: weighing active manganese powder carbon, powder carbon and binder according to a proportion, adding water, kneading, forming 3mm spherical particles by a granulator, and drying to obtain the formaldehyde adsorbent containing active manganese.
In one embodiment of the above technical scheme, the drying condition is that the temperature is 80 ℃ and the time is 8-16 hours.
Compared with the prior art, the formaldehyde adsorbent containing active manganese provided by the invention has the advantages that the structure is reserved to the greatest extent through freeze drying, formaldehyde is decomposed by utilizing the catalytic oxidation function of manganese oxide, and meanwhile, the formaldehyde removal rate can be effectively improved by utilizing the physical adsorption of active carbon, so that the formaldehyde adsorbent containing active manganese has great market application value.
For a better understanding and implementation, the present invention is described in detail below with reference to the drawings.
Drawings
FIG. 1 is one of graphs showing the experimental results of comparative example 1 and example 1.
FIG. 2 is a second diagram of the experimental results of comparative example 1 and example 1.
FIG. 3 is a graph showing the result of the electron microscope in example 2.
FIG. 4 shows the result of EDS-Mapping analysis in example 2.
FIG. 5 is an electron micrograph of the active manganese containing formaldehyde adsorbent of example 2.
Fig. 6 is an EDS analysis chart in example 2.
Detailed Description
Terms of orientation such as up, down, left, right, front, rear, front, back, top, bottom, etc. mentioned or possible mentioned in this specification are defined with respect to their construction, and they are relative concepts. Therefore, the position and the use state of the device may be changed accordingly. These and other directional terms should not be construed as limiting terms.
The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of methods consistent with some aspects of the disclosure as detailed in the accompanying claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
In a first aspect, the invention provides a formaldehyde adsorbent containing active manganese, comprising, in parts by weight:
50 parts of loaded active manganese powder carbon;
50-70 parts of powdered carbon;
10-20 parts of adhesive;
160-180 parts of water.
Active manganese is a generic term for oxides of manganese having catalytic oxidation activity, manganese of whichThe element valence state is between 3.3 and 4.0, and the method has good application prospect in indoor air purification due to the advantages of high low-temperature catalytic activity, low toxicity and low cost. The synthesis method is various, and active manganese with different structures and shapes can be prepared by controlling the temperature, the solution proportion, the drying condition and the like in the reaction process. When manganese oxide exists as a catalyst, O is formed on the surface of the manganese oxide by surface oxygen 2 - And OH and other active groups can oxidize formaldehyde and decompose into water and carbon dioxide. Meanwhile, the manganese oxide has rich structure, developed pores and certain adsorption capacity to formaldehyde.
The preparation method of the active manganese powder loaded carbon comprises the following steps: mixing 100 parts of potassium permanganate solution and 50 parts of manganese sulfate solution, regulating the pH value to 9, adding 20 parts of powdered carbon, turning over and mixing for 10 hours, centrifuging by a centrifugal machine, washing by pure water, repeating the operation of centrifugal washing for 4-5 times, pouring out supernatant and drying to obtain the loaded active manganese powdered carbon.
In one embodiment, the potassium permanganate solution has a concentration of 0.228mol/L. The solubility of the potassium permanganate is 3-6 g, and experiments show that the solubility of 3.6g of potassium permanganate is better, and the corresponding concentration is 0.228mol/L.
In one embodiment, the manganese sulfate solution concentration is 0.66mol/L. The preparation principle of the active manganese is that the reaction is as follows: 2KMnO 4 +3MnSO 4 +2H 2 O＝＝5MnO 2 ↓+2H 2 SO 4 The dosage is 100 parts of potassium permanganate and 50 parts of manganese sulfate, namely 2:1, and the concentration of the manganese sulfate can be obtained to be 0.66mol/L according to the stoichiometric number of 2:3 and the concentration of the potassium permanganate of 0.228mol/L.
In one embodiment, the centrifugation conditions are: the centrifugation speed is 5000r/min, and the time is 5min. Thus, the powdered carbon loaded with active manganese and water can be separated well.
In one embodiment, the drying conditions are: drying by using a freeze dryer at the drying temperature of minus 60 ℃ for 8 to 12 hours.
The freeze dryer is used for removing moisture in the sample through sublimation, and the agglomeration state of solid particles cannot be influenced in the gasification process of ice, so that the original particles can be ensured not to be compacted and agglomerated. Therefore, the freeze dryer is used for drying the active manganese, so that the agglomeration of the nano material can be reduced, and the full exposure of the active sites on the surface of the catalyst is facilitated.
Illustratively, the preparation method of the activated manganese powder-loaded carbon comprises the following steps: according to parts by weight, firstly mixing 100 parts of 0.228mol/L potassium permanganate solution and 50 parts of 0.66mol/L manganese sulfate solution, adjusting the pH value to 9, adding 20 parts of active carbon powder, turning over and mixing for 10 hours, centrifuging by a centrifuge, washing by pure water, wherein the speed of the centrifuge is 5000r/min, the time is 5min, repeating the operation of centrifuging and washing for 4-5 times, pouring out supernatant liquid, and then placing in a freeze dryer, and drying at-60 ℃ for 8-12 hours to prepare the active manganese powder-loaded carbon.
In one embodiment, the powdered carbon is a coal-based carbon powder.
In one embodiment, the binder is one of sodium carboxymethyl cellulose, polyvinyl alcohol.
In a second aspect, the present invention provides a method for preparing an active manganese-containing formaldehyde adsorbent, comprising: weighing active manganese powder carbon, powder carbon and binder according to a proportion, adding water, kneading, forming 3mm spherical particles by a granulator, and drying to obtain the formaldehyde adsorbent containing active manganese.
In one embodiment, the drying conditions are at a temperature of 80℃for a period of 8 to 16 hours.
Exemplary, a method for preparing an active manganese-containing formaldehyde adsorbent comprises: weighing powdered carbon loaded with active manganese, untreated powdered carbon and a binder according to a proportion, pouring the powdered carbon, the untreated powdered carbon and the binder into a container, uniformly mixing, adding a proper amount of water according to the degree of dryness and humidity while stirring, kneading, treating by a granulator, and drying the materials in an oven at 80 ℃ for 8-16 hours to obtain the spherical formaldehyde adsorbent with the diameter of 3 mm. The modified activated carbon comprises, by weight, 50 parts of activated manganese-loaded activated carbon, 50-70 parts of powdered carbon, 10-20 parts of a binder and 160-180 parts of water, wherein the binder is one of sodium carboxymethyl cellulose, carboxymethyl cellulose and polyvinyl alcohol.
The formaldehyde adsorbent containing active manganese provided by the invention has the advantages that the structure is reserved to the greatest extent through freeze drying, formaldehyde is decomposed by utilizing the catalytic oxidation function of manganese oxide, and the removal rate of formaldehyde can be effectively improved by utilizing the physical adsorption of active carbon.
Comparative example 1:
100 parts of powdered carbon and 10 parts of sodium carboxymethylcellulose are weighed according to parts by weight, poured into a container and uniformly mixed, 160 parts of water is added while stirring, the mixture is kneaded and then treated by a granulator, and the material is placed in an oven at 80 ℃ and dried for 12 hours, so that the formaldehyde adsorbent is obtained.
Example 1:
weighing 50 parts of powdered carbon loaded with active manganese, 60 parts of powdered carbon and 10 parts of sodium carboxymethylcellulose by weight, pouring into a container, uniformly mixing, adding 170 parts of water while stirring, kneading, treating by a granulator, and drying the material in a freeze dryer at the temperature of minus 60 ℃ for 12 hours to prepare the formaldehyde adsorbent containing active manganese.
Comparative example 1 and example 1 the formaldehyde adsorption curve in 1h is shown in fig. 1, and it is clear from the comparative curve that the formaldehyde adsorption efficiency of the active manganese-containing formaldehyde adsorbent of example 1 in 1h is significantly better than that of comparative example 1.
The quasi-first-order kinetic equation within 1h is shown in figure 2, and the slope of the quasi-first-order kinetic equation represents the reaction speed. As can be seen from the comparison of the slopes, the slope of the quasi-first-order kinetic equation of the formaldehyde adsorbent containing active manganese in example 1 is larger than that in comparative example 1 within 1h, which indicates that the formaldehyde adsorption reaction speed is high.
Example 2:
weighing 50 parts of powdered carbon loaded with active manganese, 70 parts of powdered carbon and 15 parts of sodium carboxymethylcellulose by weight, pouring into a container, uniformly mixing, adding 180 parts of water while stirring, kneading, treating by a granulator, and drying the material in a freeze dryer at the temperature of minus 60 ℃ for 10 hours to prepare the formaldehyde adsorbent containing active manganese.
The electron microscopy results of the powdered carbon loaded with active manganese are shown in fig. 3. As can be seen from SEM image, the clustered manganese oxide crystal particles are attached to the surface of the activated carbon, and the surface of the activated carbon presents a geometrical polyhedron shape and has an agglomeration phenomenon. In combination with EDS-Mapping analysis results (FIG. 4) of this area, it was found that the manganese element distribution was good, further illustrating the realization of active manganese payload on powdered carbon. The electron microscope image of the formaldehyde adsorbent containing active manganese is shown in fig. 5, the surface of the adsorbent is rough, the porous structure is in a cave shape, the pores are rich, irregular polyhedron attachment in the pore channels can be observed in a right partial area enlarged image, after EDS analysis is carried out on the area (fig. 6), the weight ratio of Mn species in the carrier is found to be 16.5%, which indicates that the active manganese and the carbon powder can be fully mixed in the granulating process.
Compared with the prior art, the formaldehyde adsorbent containing active manganese provided by the invention has the advantages that the structure is reserved to the greatest extent through freeze drying, formaldehyde is decomposed by utilizing the catalytic oxidation function of manganese oxide, and meanwhile, the formaldehyde removal rate can be effectively improved by utilizing the physical adsorption of active carbon, so that the formaldehyde adsorbent containing active manganese has great market application value.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.
Claims (10)
1. The formaldehyde adsorbent containing active manganese is characterized by comprising the following components in parts by weight:
50 parts of loaded active manganese powder carbon;
50-70 parts of powdered carbon;
10-20 parts of adhesive;
160-180 parts of water.
2. The active manganese-containing formaldehyde adsorbent according to claim 1, wherein the method for preparing the active manganese-loaded powdered carbon comprises: mixing 100 parts of potassium permanganate solution and 50 parts of manganese sulfate solution, regulating the pH value to 9, adding 20 parts of powdered carbon, turning over and mixing for 10 hours, centrifuging by a centrifugal machine, washing by pure water, repeating the operation of centrifugal washing for 4-5 times, pouring out supernatant and drying to obtain the loaded active manganese powdered carbon.
3. The active manganese-containing formaldehyde adsorbent according to claim 2, wherein the potassium permanganate solution has a concentration of 0.228mol/L.
4. The active manganese-containing formaldehyde adsorbent according to claim 2, wherein the manganese sulfate solution concentration is 0.66mol/L.
5. The active manganese-containing formaldehyde adsorbent according to claim 2, wherein the centrifugation conditions are: the centrifugation speed is 5000r/min, and the time is 5min.
6. The active manganese-containing formaldehyde adsorbent according to claim 2, wherein the drying conditions are: drying by using a freeze dryer at the drying temperature of minus 60 ℃ for 8 to 12 hours.
7. The activated manganese-containing formaldehyde adsorbent of any one of claims 1 to 6, wherein the powdered carbon is a coal-based carbon powder.
8. The active manganese-containing formaldehyde adsorbent according to any one of claims 1 to 6, wherein the binder is one of sodium carboxymethyl cellulose, polyvinyl alcohol.
9. A method for preparing the active manganese-containing formaldehyde adsorbent, which is used for preparing the active manganese-containing formaldehyde adsorbent according to any one of claims 1 to 8, and is characterized by comprising: weighing active manganese powder carbon, powder carbon and binder according to a proportion, adding water, kneading, forming 3mm spherical particles by a granulator, and drying to obtain the formaldehyde adsorbent containing active manganese.
10. The method for preparing an active manganese-containing formaldehyde adsorbent according to claim 9, wherein the drying condition is a temperature of 80 ℃ for 8-16 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310305774.4A CN116371359A (en) | 2023-03-24 | 2023-03-24 | Formaldehyde adsorbent containing active manganese and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202310305774.4A CN116371359A (en) | 2023-03-24 | 2023-03-24 | Formaldehyde adsorbent containing active manganese and preparation method thereof |
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| CN107754785A (en) * | 2016-08-23 | 2018-03-06 | 中国科学院理化技术研究所 | A kind of graphene manganese oxide composite catalyst for low-temperature catalytic oxidation formaldehyde and preparation method thereof |
| CN111569847A (en) * | 2019-11-08 | 2020-08-25 | 成都易态科技有限公司 | Formaldehyde adsorption-catalytic decomposition composite material, preparation method and application |
| CN112588294A (en) * | 2020-12-12 | 2021-04-02 | 莱西市济蓝环境生态科技院 | Composite material for air purification |
| CN112619607A (en) * | 2021-01-07 | 2021-04-09 | 深圳市奇信集团股份有限公司 | Formaldehyde adsorbent |
| CN115254029A (en) * | 2022-09-28 | 2022-11-01 | 佛山市芯耀环保科技有限公司 | Plant-based carbon rod material and preparation method and application thereof |
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| CN107754785A (en) * | 2016-08-23 | 2018-03-06 | 中国科学院理化技术研究所 | A kind of graphene manganese oxide composite catalyst for low-temperature catalytic oxidation formaldehyde and preparation method thereof |
| CN111569847A (en) * | 2019-11-08 | 2020-08-25 | 成都易态科技有限公司 | Formaldehyde adsorption-catalytic decomposition composite material, preparation method and application |
| CN112588294A (en) * | 2020-12-12 | 2021-04-02 | 莱西市济蓝环境生态科技院 | Composite material for air purification |
| CN112619607A (en) * | 2021-01-07 | 2021-04-09 | 深圳市奇信集团股份有限公司 | Formaldehyde adsorbent |
| CN115254029A (en) * | 2022-09-28 | 2022-11-01 | 佛山市芯耀环保科技有限公司 | Plant-based carbon rod material and preparation method and application thereof |
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| JINGE LI ET AL.: "Birnessite-Type Manganese Oxide on Granular Activated Carbon for Formaldehyde Removal at Room Temperature", 《J. PHYS. CHEM. C》, vol. 120, pages 24121 - 24129 * |
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