Catalyst materials and filter media using the same

Abstract

To provide a catalyst material and a filter material using the same, which achieves precise dispersion of metals at the single-atom level using a simplified process, possesses high catalytic activity, and improves catalytic efficiency. [Solution] The catalyst comprises a carrier, a first transient metal, and a second transient metal, wherein the first transient metal and the second transient metal are each supported on the carrier in the form of single atoms, the carrier is selected from the group consisting of iron nickel oxide, silicon aluminum oxide, aluminum oxide, and titanium oxide, the first transient metal is Fe, Cu, Ir, or Pt, and the second transient metal is Pd, Ni, or Co, when the catalyst material is 100 wt%, the sum of the weight percentages of the first transient metal and the second transient metal is between 0.2 wt% and 2.5 wt%, and when the sum of the mole fractions of the second transient metal and the first transient metal is 100%, the mole fraction of the second transient metal is 1 to 2 times the mole fraction of the first transient metal.

Description

[Technical Field]

[0001] The present invention relates to catalyst materials, and more particularly to catalyst materials used for decomposing molecular pollutants in the air, and to filter materials that utilize the same. [Background technology]

[0002] As the semiconductor industry continues to develop, chemical substances such as acid-alkali solutions and organic solvents, which are used in large quantities in the production process, are collected in exhaust systems as they naturally volatilize or are emitted during etching and cleaning processes. These volatile chemicals are called airborne molecular contamination (AMC). The amount of AMC exhaust continues to increase, not only threatening the health of workers in the work environment but also negatively impacting product yield and potentially causing environmental pollution through exhaust pipelines. For this reason, how to effectively treat and remove these trace amounts (ppb to ppm levels) of contaminants has become a topic of great interest in the industry.

[0003] Various AMC removal technologies that have already been developed and applied include physical methods (gas-phase adsorption, chemical filters, etc.) and chemical methods (solvent immersion, chemical cleaning agent treatment, etc.). While physical methods generally offer advantages such as efficiency and environmental friendliness, these technologies may have problems with incomplete removal when dealing with trace amounts (ppb levels) of AMC contaminants. While chemical methods offer stronger removal capabilities, their time-consuming post-treatment processes can have negative environmental impacts. Furthermore, for certain volatile organic compounds (VOCs), these conventional methods have limited effectiveness, and treatment methods relying on simple filter adsorption or high-temperature incineration consume a lot of energy, making them unsuitable for long-term implementation. Therefore, there is now an urgent need to address the problem of how to treat these pollutants using highly efficient catalysts in a mild environment.

[0004] Most catalyst technologies currently in use focus on catalyst materials at the micron (μm) or nanometer (nm) level. However, while catalysts of this size can provide effective catalytic activity in some applications, their effectiveness is limited when faced with even smaller amounts of contaminants (e.g., VOCs at ppb concentrations). Therefore, designing catalysts as small as a single atom has become a crucial research topic for improving catalytic performance. Single-atom catalysts have a large number of dispersed, highly active metal centers, theoretically providing more active sites and significantly improving catalytic efficiency.

[0005] Conventionally, Patent Document 1 discloses a method for producing a single-atom catalyst, which involves producing a mesoporous transient metal oxide using a mesoporous mold method and then immobilizing a single-atom noble metal to produce a catalyst. However, this process uses mesoporous molds, making it labor-intensive and increasing manufacturing costs and time. Furthermore, the production of mesoporous supports requires precise mold control and removal processes, which pose a problem of reduced efficiency in large-scale industrial production. Therefore, while this technology offers advantages in the production of single-atom catalysts, its application in actual production is somewhat limited. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Taiwan patent specification TWI733200B [Overview of the project] [Problems that the invention aims to solve]

[0007] To overcome the above technical problems, an object of the present invention is to directly synthesize and manufacture a high-performance single-atom catalyst material using a simplified process without using the mesoporous templating method, realizing accurate dispersion of metals at the single-atom level, while having extremely high catalytic activity, being able to treat volatile pollutants with concentrations in the ppb to ppm level, and significantly improving the catalytic efficiency. The present invention provides a catalyst material and a filter medium applying the same.

Means for Solving the Problems

[0008] To achieve the above object, the catalyst material of the present invention includes a carrier and a first transition metal and a second transition metal, where the first transition metal and the second transition metal are each supported on the carrier in the form of single atoms (loaded in or supported on), the carrier is selected from the group consisting of iron nickel oxide (Fe x Ni y O z ), silicon aluminum oxide (Al x Si y O z ), aluminum oxide (Al2O3), and titanium oxide (TiO2). The first transition metal is Fe, Cu, Ir, or Pt, and the second transition metal is Pd, Ni, or Co. When the catalyst material is 100 wt%, the sum of the weight percentages of the first transition metal and the second transition metal is between 0.2 wt% and 2.5 wt%, and when the sum of the molar fraction of the second transition metal and the molar fraction of the first transition metal is 100%, the molar fraction of the second transition metal is 1 to 2 times the molar fraction of the first transition metal.

[0009] In the present invention, when the carrier is iron nickel oxide (Fe x Ni y O z ), when x = 1, y = 1 or 2, z = 3 or 4; when x = 2, y = 1, z = 4; when x = 5, y = 1, z = 8. In one embodiment, Fex Ni y O z Specifically, this could be FeNiO3, FeNi2O4, Fe2NiO4, or Fe5NiO8.

[0010] In the present invention, the carrier is aluminum silicon oxide (Al x Si y O z When x=1, y=1, 2, 3 or 4, and z=3, 6, 8 or 10; when x=2, y=1 or 2, and z=5, 6, 7 or 9. In one embodiment, Al x Si y O z Specifically, these are AlSiO3, AlSi2O6, AlSi3O8, and AlSi4O 10 Al2SiO5, Al2SiO6, Al2Si2O6, Al2Si2O7, or Al2Si2O9 may also be used.

[0011] In the present invention, the carrier is aluminum silicon oxide (Al x Si y O z When this is the case, the first transient metal may be selected from Fe or Cu, and the second transient metal may be selected from Pd, Ni or Co.

[0012] In the present invention, when the support is titanium oxide (TiO2), the first transient metal may be Ir, and the second transient metal may be Pd.

[0013] In the present invention, the carrier is iron nickel oxide (Fe x Ni y O z When this is the case, the first transient metal may be Pt, and the second transient metal may be Pd.

[0014] In the present invention, when the carrier is aluminum oxide (Al2O3), the first transient metal may be Pt, and the second transient metal may be Pd, and the Pt is deposited on the surface of the Pd or coats the surface of the Pd.

[0015] In one embodiment, when the first transient metal is Fe, the Fe precursor may be selected from Fe(NO3)3·9H2O (Iron nitrate), FeCl3 (Ferric chloride), FeSO4·7H2O (Ferrous sulfate heptahydrate), FeCl2·4H2O (Ferrous chloride tetrahydrate), Fe(CH3COO)2 (Ferrous acetate), Fe(CO)5 (Iron pentacarbonyl), or Fe2(SO4)3 (Ferric sulfate).

[0016] In one embodiment, when the first transient metal is Cu, the Cu precursor may be selected from Cu(NO3)2 (Copper(II)nitrate), CuSO4·5H2O (Copper sulfate pentahydrate), CuCl2·2H2O (Copper chloride dihydrate), Cu(CH3COO)2 (Copper acetate), Cu(acac)2 (Copper acetylacetonate), CuBr2 (Copper bromide), or Cu(CO)4 (Coppercarbonyl).

[0017] In one embodiment, when the first transient metal is Ir, the precursor of Ir may be selected from IrCl3·xH2O (Iridium trichloride hydrate), Ir(NO3)3 (Iridium(III) nitrate), Ir(CO)2Cl (Iridium(III) dichlorocarbonyl), Ir(acac)3 (Iridium(III) acetylacetonate), IrBr3 (Iridium(III) bromide), IrI3 (Iridium(III) iodide), Ir(OH)3 (Iridium(III) hydroxide), Ir(CO)4 (Iridium(I) carbonyl), or IrCl4 (Iridium(IV) chloride).

[0018] In one embodiment, when the first transient metal is Pt, the precursor of Pt may be selected from H2PtCl6·6H2O (chloroplatinic acid hexahydrate), Pt(C5H7O2)2 (Platinum acetylacetonate), PtCl2 (Platinum chloride), PtBr2 (Platinum bromide), PtI2 (Platinum iodide), Pt(NH3)2Cl2 (cis-diamminedichloroplatinum), Na2PtCl6·6H2O (sodium hexachloroplatinate hexahydrate), or K2PtCl6·6H2O (potassium hexachloroplatinate hexahydrate).

[0019] In one embodiment, when the second transient metal is Pd, the Pd precursor may be selected from Pd(C5H7O2)2 (Palladium acetylacetonate), PdCl2 (Palladium chloride), PdBr2 (Palladium bromide), PdI2 (Palladium iodide), K2PdCl4 (Potassium chloropalladite), K2PdCl6 (Palladium hexachloroplatinate), Pd(NO3)2·2H2O (Palladium nitrate dihydrate), Na2PdCl4·xH2O (Sodium tetrachloropalladate(II) hydrate), or Na2PdCl6·4H2O (Sodium hexachloropalladate(IV) tetrahydrate).

[0020] In one embodiment, when the second transient metal is Ni, the Ni precursor may be selected from Ni(NO3)2·6H2O (Nickel nitrate hexahydrate), NiCl2·6H2O (Nickel chloride hexahydrate), NiSO4·6H2O (Nickel sulfate hexahydrate), Ni(CH3COO)2·4H2O (Nickel acetate tetrahydrate), Ni(CO)4 (Nickel tetracarbonyl), Ni(OH)2 (Nickel hydroxide), or Ni(acac)2 (Nickel acetylacetonate).

[0021] In one embodiment, when the second transient metal is Co, the precursor of Co may be selected from Co(NO3)2·6H2O (Cobaltous(II)nitrate hexahydrate), CoCl2·6H2O (Cobalt(II)chloride hexahydrate), CoSO4·7H2O (Cobalt(II)sulfate heptahydrate), Co(CH3COO)2·4H2O (Cobalt(II)acetate tetrahydrate), Co(acac)2 (Cobalt(II)acetylacetonate), CoBr2 (Cobalt(II)bromide), Co(OH)2 (Cobalt(II)hydroxide), or Co(CO)4 (Cobalt(I)carbonyl).

[0022] In the present invention, the carrier is iron nickel oxide (Fe x Ni y O zWhen this is the case, the Fe precursor of the support may be selected from FeCl3 (Ferric chloride), FeSO4·7H2O (Ferrous sulfate heptahydrate), FeCl2·4H2O (Ferrous chloride tetrahydrate), Fe(CH3COO)2 (Ferrous acetate), Fe(CO)5 (Iron pentacarbonyl), or Fe2(SO4)3 (Ferric sulfate), and the Ni precursor of the support may be selected from NiCl2·6H2O (Nickel chloride hexahydrate), NiSO4·6H2O (Nickel sulfate hexahydrate), Ni(CH3COO)2·4H2O (Nickel acetate tetrahydrate), Ni(CO)4 (Nickel tetracarbonyl), Ni(OH)2 (Nickel hydroxide), or Ni(acac)2 (Nickel acetylacetonate).

[0023] In one embodiment, iron nickel oxide (Fe x Ni y O z The surfactant used in the manufacturing of ) is Triton TM X-100 (Polyethylene glycol tert-octylphenyl ether), Triton TM X-114(Polyethylene glycol n-dodecyl ether), Triton TM X-405 (Polyethylene glycol n-dodecyl ether), Tween20 (Polysorbate 20), Tween80 (Polysorbate 80), Pluronic (R) F-127 (Polyethylene glycol-polypropylene glycol block copolymer), Brij (R) 35(Polyoxyethylene lauryl ether), Myrj (R)The following may be selected: 52 (Polyoxyethylene sorbitan monolaurate), sorbitan esters (Span series), SDS (Sodium dodecyl sulfate), CTAB (Cetyltrimethylammonium bromide), Brij 35 (Polyoxyethylene lauryl ether), Span 80 (Sorbitan monooleate), or dodecylbenzene sulfonic acid (DBSA).

[0024] According to the present invention, the carrier is aluminum silicon oxide (Al x Si y O z When this is the case, the Al precursor of the support may be selected from Al(NO3)3·9H2O (Aluminum nitrate), Al(OC3H7)3 (Aluminum isopropoxide), Al2(SO4)3 (Aluminum sulfate), AlCl3 (Aluminum chloride), Al(OH)3 (Aluminum hydroxide), NaAlO2 (Sodium aluminate), or Al(OC4H9)3 (Aluminum sec-butoxide), and the Si precursor of the support may be selected from Si(OC2H5)4 (Tetraethyl orthosilicate, TEOS), SiO2 (Fumed silica, Colloidal silica), Si(OH)4 (Silicic acid), Na2SiO3 (Sodium metasilicate), or SiCl4 (Silicon tetrachloride).

[0025] In one embodiment, aluminum silicon oxide (Al x Si y O zThe mold additives used in the manufacture of ) are [(C3H7)4N]OH (Tetra-n-propylammonium hydroxide, TPAH), N(CH3)4OH (Tetramethylammonium hydroxide, TMAH), N(C4H9)4OH (Tetrabutylammonium hydroxide, TBAH), C6H 12 N4(Hexamethylenetetramine, HMTA), C2H5NH2(Ethylamine), (C2H5)2NH(Diethylamine), (C2H5)3N(Triethylamine), C4H9N(Pyrrolidine), R4N + X - (Quaternary ammonium salts, where R is an alkyl group and X is a halogen) or C 16 H 33 N(CH3)3Br (Cetyltrimethylammonium bromide, CTAB) may be selected.

[0026] In the present invention, when the carrier is aluminum oxide (Al2O3), the carrier has a specific surface area (BET) of 200 m². 2 Commercial aluminum oxide with a value greater than / g may be used, and the brand of commercial aluminum oxide may be selected from Alfa Aesar, Sigma-Aldrich, or BASF.

[0027] In the present invention, when the support is titanium oxide (TiO2), the specific surface area (BET) of the support is 50 m². 2 Commercial titanium dioxide with a value greater than / g may be used, and the brand of commercial titanium dioxide may be selected from Chemors or Evonik.

[0028] In one embodiment, when the catalyst material is 100 wt%, the sum of the weight percentages of the first transient metal and the second transient metal may be selectively 0.2 wt%, 0.4 wt%, 0.6 wt%, 0.8 wt%, 1 wt%, 1.2 wt%, 1.4 wt%, 1.6 wt%, 1.8 wt%, 2 wt%, 2.2 wt%, 2.4 wt%, or 2.5 wt%, and the sum of the weight percentages of the first transient metal and the second transient metal may be within the range of any two values ​​mentioned above, but is not limited thereto.

[0029] In one embodiment, when the sum of the mole fractions of the second transient metal and the first transient metal is taken as 100%, the ratio of the mole fractions of the second transient metal to the first transient metal may be selectively 1:1, 1.1:1, 1.2:1, 1.3:1, 1.4:1, 1.5:1, 1.6:1, 1.7:1, 1.8:1, 1.9:1, or 2:1, and the ratio of the mole fractions of the second transient metal to the first transient metal may be within the range composed of any two of the above values, but is not limited thereto.

[0030] In the present invention, the first transient metal and the second transient metal may both be single-atom metals.

[0031] In one embodiment, the sizes of the first transient metal and the second transient metal may be independently between 0.2 nm and 3.0 nm. Selectively, the sizes of the first transient metal and the second transient metal may be independently between 0.2 nm, 0.4 nm, 0.6 nm, 0.8 nm, 1 nm, 1.2 nm, 1.4 nm, 1.6 nm, 1.8 nm, 2 nm, 2.2 nm, 2.4 nm, 2.6 nm, 2.8 nm, or 3 nm, and the sizes of the first transient metal and the second transient metal may be independently within the range of any two of the above values, but are not limited thereto.

[0032] In one embodiment, the size of the catalyst material may be 29 nm to 412 nm, D 50 The wavelength can be 37.9nm to 337.3nm.

[0033] Selectively, the size of the catalyst material may be 29 nm, 30 nm, 90 nm, 120 nm, 150 nm, 180 nm, 210 nm, 240 nm, 270 nm, 300 nm, 330 nm, 360 nm, 390 nm, 400 nm, or 412 nm, and the size of the catalyst material may be within the range of any two of the above values, but is not limited thereto.

[0034] Selectively, the size D of the catalyst material 50 The wavelength may be 37.9nm, 40nm, 70nm, 100nm, 130nm, 160nm, 190nm, 220nm, 250nm, 280nm, 310nm, or 337.3nm, and the size of the catalyst material may be, but is not limited to, a range composed of any two of the above values.

[0035] In one embodiment, the specific surface area (BET) of the catalyst material is 119.4 m². 2 / g~402.1m 2 It may also be / g. Selectively, the specific surface area (BET) of the catalyst material is 119.4 m². 2 / g, 120m 2 / g, 150m 2 / g, 180m 2 / g, 210m 2 / g, 240m 2 / g, 270m 2 / g, 300m 2 / g, 330m 2 / g, 360m 2 / g, 390m 2 / g or 402.1m 2 It may be / g, and the specific surface area (BET) of the catalyst material may be within the range composed of any two of the above values, but is not limited thereto.

[0036] In one embodiment, the total pore volume of the catalyst material is 0.19 cm³. 3 / g~0.81cm 3 It may be / g. Selectively, the total pore volume of the catalyst material is 0.19 cm³. 3 / g, 0.2cm 3 / g, 0.3cm 3 / g, 0.4cm 3 / g, 0.5cm 3 / g, 0.6cm 3 / g, 0.7cm 3 / g, 0.8cm 3 / g or 0.81cm 3 The value may be / g, and the total pore volume of the catalyst material may be, but is not limited to, the range composed of any two of the above values.

[0037] In one embodiment, the pore size of the catalyst material may be between 9.2 nm and 47.2 nm. Selectively, the pore size of the catalyst material may be 9.2 nm, 10 nm, 15 nm, 20 nm, 25 nm, 30 nm, 35 nm, 40 nm, 45 nm, or 47.2 nm, and the pore size of the catalyst material may be, but is not limited to, a range composed of any two of the above values. Another object of the present invention is to provide an application of the catalyst material described above, wherein the catalyst material is added to a support material to jointly form a filter medium used for filtering airborne molecular pollutants (AMCs) by the catalyst material and the support material, and the filter medium is used to decompose the airborne molecular pollutants by coming into contact with them.

[0038] In the present invention, the catalyst material is added to the support material by impregnation, coating, kneading, or spray coating techniques, and the catalyst material and the support material together form a filter material used to contact and decompose airborne molecular pollutants.

[0039] In one embodiment, the support material is manufactured by employing the "Method for Manufacturing an Air Pollutant Filter" disclosed in Taiwan Patent Publication No. TW202404683A. In this embodiment, the support material is a cloth-like material, which is immersed in a co-solvent containing a catalyst material, then dried and molded to form a filter material. Assuming the total weight of the filter material is 100 wt%, the amount of catalyst material added to the cloth-like material is 0.1 wt% to 30 wt%. Specifically, the co-solvent may be a solvent containing ethanol.

[0040] In another embodiment, the support material is selected from a fabric, which is formed from a fiber mixture by a needle-punching method. A filtration area and a plate area are defined in the fabric, the plate area surrounding the filtration area, and a plurality of parallel linear ripples are formed in the filtration area using a vacuum forming process. The fiber mixture is selected from polyester fibers, nylon, rayon, hot-melt cotton, moisture-absorbing cotton, or a combination thereof.

[0041] In yet another embodiment, the total weight of the filter material is 100 wt%, and the filter material is in the form of a nonwoven sheet material, manufactured by uniformly mixing 70 wt% to 99.9 wt% of a polymer composition with 0.1 wt% to 30 wt% of the catalyst material, and then using melt blowing and spinning technology. The polymer composition comprises at least a plastic material and a binder material, the binder material being used to enhance processability during production and stability between dissimilar materials (e.g., between a catalyst material and a plastic material), the binder material may be, but is not limited to, polyvinyl alcohol, polyethylene oxide, polyvinyl acetate, ethylene-vinyl acetate copolymer, polyacrylic acid, or polyurethane, and the plastic material may be, but is not limited to, polyethylene, polypropylene, polyethylene terephthalate, polyethylene terephthalate glycol, cyclohexanedimethanol, or nylon. Specifically, the melt-blown technology involves extruding a uniformly mixed polymer composition and catalyst material from a spinneret through a nozzle surrounded by high-speed blow gas to produce a filter material in the form of a nonwoven fabric sheet in which the catalyst material is randomly deposited. In other words, the support material is a nonwoven fabric composed of a polymer composition, and at least a portion of the catalyst material can cover the surface of the nonwoven fabric and come into contact with molecular pollutants in the air.

[0042] In one embodiment, with a total weight of 100 wt%, the filter material comprises 1.7 to 28.3 wt% of the catalyst material, 0.1 to 5 wt% of the binder material, and 66.7 to 98 wt% of the plastic material.

[0043] In one embodiment, with a total weight of 100 wt%, the filter material comprises 4.8 to 28.3 wt% of the catalyst material, 0.1 to 5 wt% of the binder material, and 66.7 to 95.1 wt% of the plastic material.

[0044] In one embodiment, the total weight of the filter material may be 100 wt%, and the amount of catalyst material added may be greater than 0 wt% and 30 wt% or less. In another period, assuming the total weight of the catalyst material and the support material is 100 wt%, the amount of catalyst material added is 0.1 wt%, 0.5 wt%, 1.5 wt%, 2.5 wt%, 3.5 wt%, 4.8 wt%, 5.5 wt%, 6.5 wt%, 7.5 wt%, 8.5 wt%, 9.5 wt%, 10.5 wt%, 11.5 wt%, 12.5 wt%, 13.5 wt%, 14.5 wt%, 15.5 The amount of catalyst material added may be wt%, 16.5wt%, 17.5wt%, 18.5wt%, 19.5wt%, 20.5wt%, 21.5wt%, 22.5wt%, 23.5wt%, 24.5wt%, 25.5wt%, 26.5wt%, 27.5wt%, 28.3wt%, or 30wt%, and the amount of catalyst material added may be within the range of any two of the above values, but is not limited thereto.

[0045] In the present invention, molecular pollutants in the air include acetone, isopropyl alcohol (IPA), ethanol, ethyl acetate, toluene, xylene, trichloroethylene, propylene glycol monomethyl ether (PGME), propylene glycol monomethyl ether acetate (PGMEA), or dimethyl sulfoxide (DMSO), or N-methylpyrrolidone (NMP). Of particular note is that the catalyst material of the present invention is applicable to the treatment of any airborne molecular pollutants at concentrations of 10 ppb to 5000 ppm. Preferably, the catalyst material of the present invention is applicable to the treatment of any airborne molecular pollutants at concentrations of 10 ppb to 1000 ppm. More preferably, the catalyst material of the present invention is applicable to the treatment of any airborne molecular pollutants at concentrations of 500 ppb to 100 ppm.

[0046] According to the present invention, the removal rate of molecular pollutants in the air by the catalyst material at room temperature reaches 90.5%. In one embodiment, the removal rate of molecular pollutants from the air at room temperature using the catalyst material reaches 32.5% to 90.5%. Specifically, the removal rate of molecular pollutants from the air at room temperature using the catalyst material may reach 32.5%, 37.2%, 38.5%, 39.6%, 40.7%, 42.3%, 46.5%, 49.3%, 49.6%, 54.3%, 59.6%, 66.5%, 76.2%, or 90.5%. The removal rate of molecular pollutants from the air at room temperature using the catalyst material may be, but is not limited to, a range composed of any two of the above-mentioned values.

[0047] According to the present invention, the catalyst material has a reaction temperature (T 90 ) achieves an efficiency of 90% in removing airborne molecular pollutants at temperatures below 171.4℃. In one embodiment, the catalyst material is reacted at a temperature (T 90 ) is 25℃~171.4℃ (25℃≦T 90 At a reaction temperature (T), the efficiency of removing molecular pollutants from the air reaches 90%. Specifically, the catalyst material has a reaction temperature (T 90 The efficiency of removing airborne molecular pollutants may reach 90% at 25°C, 63.2°C, 82.1°C, 92.5°C, 99.5°C, 103.4°C, 117°C, 121°C, 133.2°C, 135°C, 151.2°C, 164.5°C, 167°C, or 171.4°C. The catalyst material has a reaction temperature (T 90The efficiency of removing airborne molecular pollutants may reach 90% within the range of any two of the above values. [Effects of the Invention]

[0048] The catalyst material of this invention expands its potential applications in the field of filter media technology by successfully being applied to filter media. This simplifies the manufacturing process, effectively reducing production costs, and allows for flexible application in large-scale industrial production. With its wide range of application possibilities, it is particularly well-suited to the treatment needs of gaseous pollutants in the modern chemical industry, making it a solution with great potential. [Brief explanation of the drawing]

[0049] [Figure 1] This is a TEM image of the supported metal of the catalyst material in Example 1 of the present invention. [Figure 2] This is a TEM image of the supported metal of the catalyst material in Example 3 of the present invention. [Figure 3] This is a TEM image of the supported metal of the catalyst material in Example 7 of the present invention. [Figure 4] This bar graph shows the isopropyl alcohol removal efficiency when the catalyst material is added to a cloth-like material in different amounts in Example 4 of the present invention. [Modes for carrying out the invention]

[0050] The following describes embodiments of the catalyst material and filter material using the catalyst material of the present invention, with reference to several examples. Those skilled in the art will be able to easily understand the advantages and effects achieved by the present invention based on the following examples and comparative examples. The following description is for illustrative purposes only and does not limit the scope of the present invention. It goes without saying that those skilled in the art can implement or apply the present invention by making various modifications and changes without departing from the spirit of the invention, using their ordinary knowledge.

[0051] "Preparation of Catalyst Materials"

[0052] Table 1 below shows the catalyst materials of Examples 1 - 7 (E1 - E7) and Comparative Examples 1 - 9 (C1 - C9) of the present invention. Taking Example 1 (E1) as an example, the catalyst material is represented as "Pt1Pd1 / Fe" x Ni y O z ", and among them, after " / ", for example, "Fe" x Ni y O z " refers to the composition name of the carrier of the catalyst material, and before " / ", for example, "Pt1Pd1" refers to the composition name of the supported metal of the catalyst material. Taking Example 6 (E6) as an example, the catalyst material is represented as "Pt / PdO / Al2O3", and among them, after the second " / ", for example, "Al2O3" refers to the composition name of the carrier of the catalyst material, and before the second " / ", for example, "Pt / PdO" refers to the composition name of the supported metal of the catalyst material.

[0053] [Table 1] Metal loading and TEM dimensions of the supported metals of the catalyst materials of Examples 1 - 7 (E1 - E7) and Comparative Examples 1 - 9 (C1 - C9) TIFF2026112359000002.tif171142

[0054] The preparation methods of the catalyst materials of Examples 1 - 7 (E1 - E7) and Comparative Examples 1 - 9 (C1 - C9) described in Table 1 below will be explained.

Example

[0055] Example 1 (E1): Pt1Pd1 / Fe x Ni y O z Manufacturing method

[0056] Fe x Ni<> y O z The manufacturing method of the carrier includes the following steps. Dissolve an appropriate amount of nickel nitrate (Ni(NO3)2·6H2O, Sigma - Aldrich, 99.9%) and iron nitrate (Fe(NO3)3·9H2O, Sigma - Aldrich, 99.9%) in an appropriate amount of deionized water. Among them, the weight ratio of nickel nitrate: iron nitrate: deionized water is 28.9:29.7:200, and stir for at least 30 minutes. Then, titrate with a 2N potassium hydroxide (KOH, Sigma - Aldrich, 85% preparation) solution, monitor the redox potential of the mixed solution, and control it to -0.1783V. The mixing process is continuously stirred at 500 rpm and 35°C for 1 hour. Subsequently, perform solid - liquid separation with a continuous centrifuge. After washing with water and drying, dry at 60°C for 1 day. Then, in a high - temperature furnace, heat from room temperature to 400°C - 600°C at a rate of 5°C per minute for calcination, and maintain the temperature for 12 hours of calcination to obtain Fe x Ni y O z powder. The Fe x Ni y O z powder may be a powder composed of FeNiO3, FeNi2O4, Fe2NiO4, Fe5NiO8 or a mixed crystal phase thereof.

[0057] Pt1Pd1 / Fe x Ni y O z The manufacturing method of the catalyst material includes the following steps. Add the aforementioned Fe x Ni y O z powder to an appropriate amount of deionized water, stir at 35°C and 500 rpm for 30 minutes to form an Fe x Ni y O z aqueous solution. Then, use an appropriate amount of Triton X - 100 (Triton TM X - 100, Sigma - Aldrich), hexahydrate chloroplatinic acid (H2PtCl6·6H2O, Sigma - Aldrich, 99.9%), potassium tetrachloropalladate (K2PdCl4, Sigma - Aldrich, 98%) to prepare mother liquors of 2.5 mM, 12.8 mM, and 23.5 mM respectively, and the aforementioned Fex Ni y O z Add the ingredients to the aqueous solution in order and stir continuously for 30 minutes. The temperature is increased at a rate of 5°C per minute until it reaches 65°C. Once the temperature reaches 65°C, 45 mM sodium borohydride (NaBH4, Sigma-Aldrich, 98%) is added. Observe the change in oxidation-reduction potential, and when it reaches 0.057V to 0.065V, cool it to room temperature under a nitrogen atmosphere. Subsequently, a solid-liquid separation process is performed, and after drying at 60°C for one day, the Pt1Pd1 / Fe of Example 1 (E1) is obtained. x Ni y O z A catalyst material is obtained. [Examples]

[0058] Example 2 (E2): Fe1Pd2 / Al x Si y O z manufacturing method

[0059] Al x Si y O z The manufacturing process for the carrier includes the following steps: Dissolve appropriate amounts of aluminum nitrate (Al(NO3)3·9H2O, Sigma-Aldrich, 98%), sodium silicate (Na2SiO3, Sigma-Aldrich, 95%), and tetrapropylammonium hydroxide (TPAH, Sigma-Aldrich, 99%) in appropriate amounts of deionized water. The weight ratio of aluminum nitrate:sodium silicate:tetrapropylammonium hydroxide:deionized water should be 55.62:26.07:5:200, and stir for at least 30 minutes. The mixture is then transferred to a high-pressure reactor, where it is heated at a rate of 5°C per minute to 155°C and maintained for 6 hours. Subsequently, solid-liquid separation is performed using a continuous centrifuge, followed by washing with water and drying, and then drying at 60°C for 1 day. Afterward, the material is fired in a high-temperature furnace, increasing the temperature from room temperature to 450°C-550°C at a rate of 5°C per minute, and maintaining the temperature for 12 hours to produce Al x Si y O zA powder is obtained. x Si y O z The powders are AlSiO3, AlSi2O6, AlSi3O8, and AlSi4O 10 The powder may be composed of Al2SiO5, Al2SiO6, Al2Si2O6, Al2Si2O7, Al2Si2O9, or a mixed crystalline phase thereof.

[0060] Fe1Pd2 / Al x Si y O z The method for producing the catalyst material includes the following steps: As mentioned above, Al x Si y O z Add the powder to an appropriate amount of deionized water, stir at 35°C and 500 rpm for 30 minutes, then add Al x Si y O z It forms an aqueous solution. After that, an appropriate amount of Triton X-100 (Triton TM Using X-100 (Sigma-Aldrich), iron nitrate (Fe(NO3)3·9H2O, Sigma-Aldrich, 99.9%), and potassium tetrachloropalladate (K2PdCl4, Sigma-Aldrich, 98%), mother liquors of 2.5 mM, 16.43 mM, and 23.5 mM were prepared, respectively. x Si y O z Add the ingredients sequentially to the aqueous solution and stir continuously for 30 minutes. Increase the temperature at a rate of 5°C per minute to 65°C, and once the temperature reaches 65°C, add 45 mM sodium borohydride (NaBH4, Sigma-Aldrich, 98%). Observe the change in oxidation-reduction potential, and when it reaches 0.057V to 0.0981V, cool it to room temperature under a nitrogen atmosphere. Subsequently, a solid-liquid separation process is performed, and after drying at 60°C for one day, the Fe1Pd2 / Al of Example 2(E2) is obtained. x Si y O z A catalyst material is obtained. [Examples]

[0061] Example 3 (E3): Cu1Pd2 / Al x Si y O z manufacturing method

[0062] Al x Si y O z The method for producing the carrier is as follows: Al x Si y O z Using the same process as the carrier manufacturing method, Al x Si y O z A powder is obtained. x Si y O z The powders are AlSiO3, AlSi2O6, AlSi3O8, and AlSi4O 10 The powder may be composed of Al2SiO5, Al2SiO6, Al2Si2O6, Al2Si2O7, Al2Si2O9, or a mixed crystalline phase thereof.

[0063] Cu1Pd2 / Al x Si y O z The method for producing the catalyst material includes the following steps: As mentioned above, Al x Si y O z Add the powder to an appropriate amount of deionized water, stir at 35°C and 500 rpm for 30 minutes, then add Al x Si y O z It forms an aqueous solution. After that, an appropriate amount of Triton X-100 (Triton TM Using X-100 (Sigma-Aldrich), copper nitrate (Cu(NO3)2·3H2O, Sigma-Aldrich, 98%), and potassium tetrachloropalladate (K2PdCl4, Sigma-Aldrich, 98%), mother liquors of 2.5 mM, 74.88 mM, and 23.5 mM were prepared, respectively, and the aforementioned Al x Si y O z Add the ingredients to the aqueous solution in order and stir continuously for 30 minutes. The temperature is increased at a rate of 5°C per minute until it reaches 65°C. Once the temperature reaches 65°C, 45 mM sodium borohydride (NaBH4, Sigma-Aldrich, 98%) is added. Observe the change in oxidation-reduction potential, and when it reaches 0.057V to 0.0981V, cool it to room temperature under a nitrogen atmosphere. Subsequently, a solid-liquid separation process is performed, and after drying at 60°C for one day, the Cu1Pd2 / Al of Example 3 (E3) is obtained. x Si y O z A catalyst material is obtained. [Examples]

[0064] Example 4 (E4): Fe1Ni2 / Al x Si y O z manufacturing method

[0065] Al x Si y O z The method for producing the carrier is as follows: Al x Si y O z Using the same process as the carrier manufacturing method, Al x Si y O z A powder is obtained. x Si y O z The powders are AlSiO3, AlSi2O6, AlSi3O8, and AlSi4O 10 The powder may be composed of Al2SiO5, Al2SiO6, Al2Si2O6, Al2Si2O7, Al2Si2O9, or a mixed crystalline phase thereof.

[0066] Fe1Ni2 / Al x Si y O z The method for producing the catalyst material includes the following steps: Al x Si y O z Add the powder to an appropriate amount of deionized water, stir at 35°C and 500 rpm for 30 minutes, then add Al x Si y O z It forms an aqueous solution. After that, an appropriate amount of Triton X-100 (Triton TM Using X-100 (Sigma-Aldrich), iron nitrate (Fe(NO3)3·9H2O, Sigma-Aldrich, 99.9%), and nickel nitrate (Ni(NO3)2·6H2O, Sigma-Aldrich, 99.9%), mother liquors of 2.5 mM, 44.77 mM, and 42.60 mM were prepared, respectively, and the aforementioned Al x Si y O z Add the ingredients to the aqueous solution in order and stir continuously for 30 minutes. The temperature is increased at a rate of 5°C per minute until it reaches 65°C. Once the temperature reaches 65°C, 45 mM sodium borohydride (NaBH4, Sigma-Aldrich, 98%) is added. Observe the change in oxidation-reduction potential, and when it reaches 0.057V to 0.0981V, cool it to room temperature under a nitrogen atmosphere. Subsequently, a solid-liquid separation process is performed, and after drying at 60°C for one day, the Fe1Ni2 / Al of Example 4 (E4) is obtained. x Si y O z A catalyst material is obtained. [Examples]

[0067] Example 5 (E5): Fe1Co2 / Al x Si y O z manufacturing method

[0068] Al x Si y O z The method for producing the carrier is as follows: Al x Si y O z Using the same process as the carrier manufacturing method, Al x Si y O z A powder is obtained. x Si y O z The powders are AlSiO3, AlSi2O6, AlSi3O8, and AlSi4O 10The powder may be composed of Al2SiO5, Al2SiO6, Al2Si2O6, Al2Si2O7, Al2Si2O9, or a mixed crystalline phase thereof.

[0069] Fe1CO2 / Al x Si y O z The method for producing the catalyst material includes the following steps: Al x Si y O z Add the powder to an appropriate amount of deionized water, stir at 35°C and 500 rpm for 30 minutes, then add Al x Si y O z It forms an aqueous solution. After that, an appropriate amount of Triton X-100 (Triton TM Using X-100 (Sigma-Aldrich), iron nitrate (Fe(NO3)3·9H2O, Sigma-Aldrich, 99.9%), and cobalt nitrate (Co(NO3)2·6H2O, Sigma-Aldrich, 99.9%), mother liquors of 2.5 mM, 44.77 mM, and 42.42 mM were prepared, respectively, and the aforementioned Al x Si y O z Add the ingredients to the aqueous solution in order and stir continuously for 30 minutes. The temperature is increased at a rate of 5°C per minute until it reaches 65°C. Once the temperature reaches 65°C, 45 mM sodium borohydride (NaBH4, Sigma-Aldrich, 98%) is added. Observe the change in oxidation-reduction potential, and when it reaches 0.057V to 0.0981V, cool it to room temperature under a nitrogen atmosphere. Subsequently, a solid-liquid separation process is performed, and after drying at 60°C for one day, the Fe1Co2 / Al of Example 5 (E5) is obtained. x Si y O z A catalyst material is obtained. [Examples]

[0070] Example 6 (E6): Method for producing Pt / PdO / Al2O3

[0071] Al2O3 support is commercial aluminum oxide (Al2O3) powder (Alfa Aesar, BET > 200m 2 Use / g).

[0072] The method for producing the Pt / PdO / Al2O3 catalyst material includes the following steps. Add the aforementioned Al2O3 powder to an appropriate amount of deionized water and stir at 35°C and 500 rpm for 30 minutes to form an Al2O3 aqueous solution. After that, an appropriate amount of Triton X-100 (Triton TM Using X-100 (Sigma-Aldrich), chloroplatinic acid hexahydrate (H2PtCl6·6H2O, Sigma-Aldrich, 99.9%), and potassium tetrachloropalladate (K2PdCl4, Sigma-Aldrich, 98%), mother liquors of 2.5 mM, 12.8 mM, and 23.5 mM were prepared, respectively, and added sequentially to the aforementioned Al2O3 aqueous solution, stirring continuously for 30 minutes. The temperature was raised at 5°C per minute to 65°C, and when the temperature reached 65°C, 45 mM sodium borohydride (NaBH4, Sigma-Aldrich, 98%) was added. Observe the change in oxidation-reduction potential, and when it reaches 0.057V to 0.065V, cool it to room temperature under a nitrogen atmosphere. Subsequently, a solid-liquid separation process is performed, and the material is dried at 60°C for one day to obtain the Pt / PdO / Al2O3 catalyst material of Example 6 (E6). [Examples]

[0073] Example 7(E7): Method for producing Ir1Pd1 / TiO2

[0074] The TiO2 support is a commercially available titanium dioxide (TiO2) powder (Chemours, BET>50m). 2 Use / g).

[0075] The method for producing the Ir1Pd1 / TiO2 catalyst material includes the following steps. The aforementioned TiO2 powder is added to an appropriate amount of deionized water / alcohol (in a 1:1 ratio), and stirred at 30°C and 500 rpm for 30 minutes to form an aqueous TiO2 solution. After that, an appropriate amount of Triton X-100 (Triton TM Using X-100 (Sigma-Aldrich), iridium(III) chloride hydrate (IrCl3·xH2O, Sigma-Aldrich, 99.9%), and potassium tetrachloropalladate (K2PdCl4, Sigma-Aldrich, 98%), mother liquors of 2.5 mM, 13.1 mM, and 23.5 mM were prepared, respectively, and added sequentially to the aforementioned TiO2 aqueous solution, with continuous stirring for 30 minutes. The temperature is increased at a rate of 5°C per minute until it reaches 85°C. Once the temperature reaches 85°C, 80 mM urea (Sigma-Aldrich, 99.5%) is added. Observe the change in oxidation-reduction potential, and when it reaches 0.057V to 0.065V, cool it to room temperature under a nitrogen atmosphere. Subsequently, a solid-liquid separation process is performed, and the material is dried at 60°C for one day to obtain the Ir1Pd1 / TiO2 catalyst material of Example 7 (E7). Comparative Example 1

[0076] Comparative example 1 (C1): Pt1 / Fe x Ni y O z manufacturing method

[0077] Fe x Ni y O z The method for producing the carrier is as follows: Fe x Ni y O z Using the same process as the carrier manufacturing method, Fe x Ni y O z A powder is obtained. Fe x Ni y O z The powder may be composed of FeNiO3, FeNi2O4, Fe2NiO4, Fe5NiO8, or a mixed crystalline phase.

[0078] Pt1 / Fe x Ni y O z The method for producing the catalyst material includes the following steps: As mentioned above, Fe x Ni y O zAdd the powder to an appropriate amount of deionized water, stir at 35°C and 500 rpm for 30 minutes, and then add Fe x Ni y O z It forms an aqueous solution. After that, an appropriate amount of Triton X-100 (Triton TM Using X-100 (Sigma-Aldrich) and chloroplatinic acid hexahydrate (H2PtCl6·6H2O, Sigma-Aldrich, 99.9%), mother liquors of 2.5 mM and 12.8 mM were prepared, respectively, and the aforementioned Fe x Ni y O z Add the ingredients to the solution in order and stir continuously for 30 minutes. The temperature is increased at a rate of 5°C per minute until it reaches 65°C. Once the temperature reaches 65°C, 45 mM sodium borohydride (NaBH4, Sigma-Aldrich, 98%) is added. Observe the change in oxidation-reduction potential, and when it reaches 0.35V to 0.36V, cool it to room temperature under a nitrogen atmosphere. Subsequently, a solid-liquid separation process is performed, and the mixture is dried at 60°C for one day. Comparative Example 2

[0079] Comparative example 2 (C2): Pd1 / Fe x Ni y O z manufacturing method

[0080] Fe x Ni y O z The method for producing the carrier is as follows: Fe x Ni y O z Using the same process as the carrier manufacturing method, Fe x Ni y O z A powder is obtained. Fe x Ni y O z The powder may be composed of FeNiO3, FeNi2O4, Fe2NiO4, Fe5NiO8, or a mixed crystalline phase.

[0081] Pd1 / Fe x Ni y O zThe method for producing the catalyst material includes the following steps: As mentioned above, Fe x Ni y O z Add the powder to an appropriate amount of deionized water, stir at 35°C and 500 rpm for 30 minutes, and then add Fe x Ni y O z It forms an aqueous solution. After that, an appropriate amount of Triton X-100 (Triton TM Using X-100 (Sigma-Aldrich) and potassium tetrachloropalladate (K2PdCl4, Sigma-Aldrich, 98%), mother liquors of 2.5 mM and 23.5 mM were prepared, respectively, and the aforementioned Fe x Ni y O z Add the ingredients to the solution in order and stir continuously for 30 minutes. The temperature is increased at a rate of 5°C per minute until it reaches 65°C. Once the temperature reaches 65°C, 45 mM sodium borohydride (NaBH4, Sigma-Aldrich, 98%) is added. Observe the change in oxidation-reduction potential, and when it reaches 0.32V to 0.33V, cool it to room temperature under a nitrogen atmosphere. Subsequently, a solid-liquid separation process is performed, and the mixture is dried at 60°C for one day. Comparative Example 3

[0082] Comparative example 3 (C3): Cu1 / Al x Si y O z manufacturing method

[0083] Al x Si y O z The method for producing the carrier is as follows: Al x Si y O z Using the same process as the carrier manufacturing method, Al x Si y O z A powder is obtained. x Si y O z The powders are AlSiO3, AlSi2O6, AlSi3O8, and AlSi4O 10The powder may be composed of Al2SiO5, Al2SiO6, Al2Si2O6, Al2Si2O7, Al2Si2O9, or a mixed crystalline phase thereof.

[0084] Cu1 / Al x Si y O z The method for producing the catalyst material includes the following steps: Al x Si y O z Add the powder to an appropriate amount of deionized water, stir at 35°C and 500 rpm for 30 minutes, then add Al x Si y O z It forms an aqueous solution. After that, an appropriate amount of Triton X-100 (Triton TM Using X-100 (Sigma-Aldrich) and copper nitrate (Cu(NO3)2.3H2O, Sigma-Aldrich, 98%), mother liquors of 2.5 mM and 74.88 mM were prepared, and the aforementioned Al x Si y O z Add the ingredients to the solution in order and stir continuously for 30 minutes. The temperature is increased at a rate of 5°C per minute until it reaches 65°C. Once the temperature reaches 65°C, 45 mM sodium borohydride (NaBH4, Sigma-Aldrich, 98%) is added. Observe the change in oxidation-reduction potential, and when it reaches 0.35V to 0.37V, cool it to room temperature under a nitrogen atmosphere. Subsequently, a solid-liquid separation process is performed, and the mixture is dried at 60°C for one day. Comparative Example 4

[0085] Comparative example 4 (C4): Pd1 / Al x Si y O z manufacturing method

[0086] Al x Si y O z The method for producing the carrier is as follows: Al x Si y O z Using the same process as the carrier manufacturing method, Al x Si y Oz A powder is obtained. x Si y O z The powders are AlSiO3, AlSi2O6, AlSi3O8, and AlSi4O 10 The powder may be composed of Al2SiO5, Al2SiO6, Al2Si2O6, Al2Si2O7, Al2Si2O9, or a mixed crystalline phase thereof.

[0087] Pd1 / Al x Si y O z The method for producing the catalyst material includes the following steps: As mentioned above, Al x Si y O z Add the powder to an appropriate amount of deionized water, stir at 35°C and 500 rpm for 30 minutes, then add Al x Si y O z It forms an aqueous solution. After that, an appropriate amount of Triton X-100 (Triton TM Using X-100 (Sigma-Aldrich) and potassium tetrachloropalladate (K2PdCl4, Sigma-Aldrich, 98%), mother liquors of 2.5 mM and 23.5 mM were prepared, respectively, and the aforementioned Al x Si y O z Add the ingredients to the solution in order and stir continuously for 30 minutes. The temperature is increased at a rate of 5°C per minute until it reaches 65°C. Once the temperature reaches 65°C, 45 mM sodium borohydride (NaBH4, Sigma-Aldrich, 98%) is added. Observe the change in oxidation-reduction potential, and when it reaches 0.40V to 0.41V, cool it to room temperature under a nitrogen atmosphere. Subsequently, a solid-liquid separation process is performed, and the mixture is dried at 60°C for one day. Comparative Example 5

[0088] Comparative example 5 (C5): Fe1Ni2 / Al x Si y O z manufacturing method

[0089] Al x Si yO z The method for producing the carrier is as follows: Al x Si y O z Using the same process as the carrier manufacturing method, Al x Si y O z A powder is obtained. x Si y O z The powders are AlSiO3, AlSi2O6, AlSi3O8, and AlSi4O 10 The powder may be composed of Al2SiO5, Al2SiO6, Al2Si2O6, Al2Si2O7, Al2Si2O9, or a mixed crystalline phase thereof.

[0090] Fe1Ni2 / Al x Si y O z The method for producing the catalyst material includes the following steps: As mentioned above, Al x Si y O z Add the powder to an appropriate amount of deionized water, stir at 35°C and 500 rpm for 30 minutes, then add Al x Si y O z It forms an aqueous solution. After that, an appropriate amount of Triton X-100 (Triton TM Using X-100 (Sigma-Aldrich), iron nitrate (Fe(NO3)3·9H2O, Sigma-Aldrich, 99.9%), and nickel nitrate (Ni(NO3)2·6H2O, Sigma-Aldrich, 99.9%), mother liquors of 7.5 mM, 134.3 mM, and 42.60 mM were prepared, respectively, and the aforementioned Al x Si y O z Add the ingredients to the solution in order and stir continuously for 30 minutes. The temperature is increased at a rate of 5°C per minute until it reaches 65°C. Once the temperature reaches 65°C, 45 mM sodium borohydride (NaBH4, Sigma-Aldrich, 98%) is added. Observe the change in oxidation-reduction potential, and when it reaches 0.45V to 0.46V, cool it to room temperature under a nitrogen atmosphere. Subsequently, a solid-liquid separation process is performed, and the mixture is dried at 60°C for one day. Comparative Example 6

[0091] Comparative example 6 (C6): Mn1Co2 / Al x Si y O z manufacturing method

[0092] Al x Si y O z The method for producing the carrier is as follows: Al x Si y O z Using the same process as the carrier manufacturing method, Al x Si y O z A powder is obtained. x Si y O z The powders are AlSiO3, AlSi2O6, AlSi3O8, and AlSi4O 10 The powder may be composed of Al2SiO5, Al2SiO6, Al2Si2O6, Al2Si2O7, Al2Si2O9, or a mixed crystalline phase thereof.

[0093] Mn1CO2 / Al x Si y O z The method for producing the catalyst material includes the following steps: As mentioned above, Al x Si y O z Add the powder to an appropriate amount of deionized water, stir at 35°C and 500 rpm for 30 minutes, then add Al x Si y O z It forms an aqueous solution. After that, an appropriate amount of Triton X-100 (Triton TM Using X-100 (Sigma-Aldrich), manganese nitrate (Mn(NO3)2·4H2O, Sigma-Aldrich, 99%), and cobalt nitrate (Co(NO).6H2O, Alfa, 98%), mother liquors of 7.5 mM, 100.4 mM, and 100.6 mM were prepared, respectively, and the aforementioned Al x Si y O z Add the ingredients to the solution in order and stir continuously for 30 minutes. Heat up to 65°C at a rate of 5°C per minute. Once the temperature reaches 65°C, add 45 mM of sodium borohydride (NaBH4, Sigma - Aldrich, 98%). Observe the change in the redox potential. When it reaches 0.41 V - 0.42 V, cool it down to room temperature under a nitrogen atmosphere. After that, perform a solid - liquid separation process and dry it at 60°C for 1 day. Comparative Example 7

[0094] Comparative Example 7 (C7): Preparation method of Pt / PdO / Al2O3

[0095] The Al2O3 support uses commercial aluminum oxide (Al2O3) powder (Alfa Aesar, BET > 200 m 2 / g).

[0096] The preparation method of the Pt / PdO / Al2O3 catalyst material includes the following steps. Add the aforementioned Al2O3 powder to an appropriate amount of deionized water and stir at 35°C and 500 rpm for 30 minutes to form an Al2O3 aqueous solution. After that, use an appropriate amount of Triton TM X - 100 (Triton X - 100, Sigma - Aldrich), hexahydrate chloroplatinic acid (H2PtCl6·6H2O, Sigma - Aldrich, 99.9%), potassium tetrachloropalladate (K2PdCl4, Sigma - Aldrich, 98%) to prepare mother liquors of 2.5 mM, 6.4 mM, and 23.5 mM respectively, and add them sequentially into the aforementioned Al2O3 solution and continue to stir for 30 minutes. Heat up to 65°C at a rate of 5°C per minute. Once the temperature reaches 65°C, add 45 mM of sodium borohydride (NaBH4, Sigma - Aldrich, 98%). Observe the change in the redox potential. When it reaches 0.45 V - 0.46 V, cool it down to room temperature under a nitrogen atmosphere. After that, perform a solid - liquid separation process and dry it at 60°C for 1 day. Comparative Example 8

[0097] Comparative Example 8 (C8): Preparation method of Ir1 / TiO2

[0098] The TiO2 support uses commercial titanium dioxide (TiO2) powder (Chemours, BET > 50 m 2 / g).

[0099] The manufacturing method of the Ir1 / TiO2 catalyst material includes the following steps. Add the aforementioned TiO2 powder to an appropriate amount of deionized water / alcohol (weight ratio 1:1), stir at 30 °C and 500 rpm for 30 minutes to form a TiO2 aqueous solution. Then, use an appropriate amount of Triton X-100 (Triton TM X-100, Sigma-Aldrich) and iridium(III) chloride hydrate (IrCl3.xH2O, Sigma-Aldrich, 99.9%) to prepare stock solutions of 2.5 mM and 13.1 mM respectively, add them sequentially to the aforementioned TiO2 solution, and continue stirring for 30 minutes. Raise the temperature to 85 °C at 5 °C per minute. Once the temperature reaches 85 °C, add 80 mM of urea (Urea4, Sigma-Aldrich, 99.5%). Observe the change in the redox potential. When it reaches 0.29 V - 0.30 V, cool it to room temperature under a nitrogen atmosphere. Then, perform a solid-liquid separation process and dry it at 60 °C for 1 day. Comparative Example 9

[0100] Comparative Example 9 (C9): Manufacturing method of Pd1 / TiO2

[0101] The TiO2 support uses commercial titanium dioxide (TiO2) powder (Chemours, BET > 50 m 2 / g).

[0102] The manufacturing method of the Pd1 / TiO2 catalyst material includes the following steps. Add the aforementioned TiO2 powder to an appropriate amount of deionized water / alcohol (weight ratio 1:1), stir at 30 °C and 500 rpm for 30 minutes to form a TiO2 aqueous solution. Then, use an appropriate amount of Triton X-100 (Triton TMUsing X-100 (Sigma-Aldrich) and potassium tetrachloropalladate (K2PdCl4, Sigma-Aldrich, 98%), prepare 2.5 mM and 23.5 mM mother liquors, respectively, and add them sequentially to the aforementioned TiO2 solution, stirring continuously for 30 minutes. The temperature is increased at a rate of 5°C per minute until it reaches 85°C. Once the temperature reaches 85°C, 80 mM urea (Urea4, Sigma-Aldrich, 99.5%) is added. Observe the change in oxidation-reduction potential, and when it reaches 0.29V to 0.30V, cool it to room temperature under a nitrogen atmosphere. Afterward, a solid-liquid separation process is carried out, followed by drying at 60°C for one day.

[0103] Measurement of catalyst materials

[0104] As shown in Table 1, under the condition that Examples 1 to 7 have two types of transient metals, TEM images obtained by transmission electron microscopy (TEM) show that the supported metal sizes in Examples 1 to 5 and 7 (E1 to E5, E7) are all less than 2 nm, with the minimum size being only 0.2 nm and the maximum supported metal size being only 3 nm (E6). Compared with comparative examples (C1 to C4, C8, C9) that support only one type of transient metal, the catalyst materials of Examples 1 to 7 can produce a significant synergistic effect due to having two types of metals. Compared to comparative examples (C5, C6) supporting two types of transient metals, the supported metals in Examples 1-7 have a smaller TEM size, which can provide a higher active site density, higher catalyst activity, a larger surface area, and improved reaction selectivity and stability.

[0105] Figures 1 to 3 show TEM images of Examples 1, 3, and 7 of the present invention. As can be seen from Figure 1, the supported metal particles in Example 1 have a more uniform distribution, with particle sizes ranging from approximately 0.2 nm to 2 nm, which is consistent with the data in Table 1. As shown in Figure 1, the particles are more dispersed, meaning that Pt and Pd are more concentrated in the Fe x Ni y O zBecause it is supported in a more uniformly distributed state on the surface, it is beneficial for improving the activity of the catalyst. In addition, small particles are beneficial for increasing specific surface area and catalytic activity, because the two metal catalysts provide a synergistic effect, thereby increasing the efficiency of the reaction.

[0106] As can be seen from Figure 2, in Example 3, some relatively large particles were observed among the supported metal particles, with a size of approximately 1.0 nm to 2.0 nm, which is consistent with the TEM size description in Table 1. These particles formed a distinct point-like distribution on the substrate, indicating the presence of two metal particles. In addition, the synergistic effect of the two metals Cu and Pd is beneficial for enhancing the catalytic selectivity and activity of specific reactions. Unlike Example 1, the supported metal in Example 3 has slightly larger particles, but it remains within a relatively small range, which is also beneficial for achieving a higher catalytic effect.

[0107] As can be seen from Figure 3, the supported metal particles in Example 7 have a finer particle distribution, with a particle size of approximately 0.2 nm to 2 nm, which matches the data in Table 1. The particle distribution on TiO2 is uniform and the size is smaller, indicating good dispersibility of Ir-Pd particles, which is very advantageous for improving catalyst performance. Furthermore, the favorable distribution of the two metal systems, Ir and Pd, on the TiO2 support may enhance the stability and reaction activity of catalysts, particularly in applications requiring high stability and long lifetime.

[0108] Table 2 shows the measurement results for the size, D50, specific surface area, total pore volume, and pore diameter parameters of the catalyst material from Table 1.

[0109] The particle size of the catalyst material was measured using a particle size analyzer. The comparison revealed that the particle sizes of the dimetallic catalyst materials in Examples 1-7 (E1-E7) were mostly concentrated within a relatively small range. Taking E1 as an example, its particle size ranges from 30 nm to 61 nm. Compared to the single-metal catalysts used in the comparative example (such as C1 (29 nm to 62 nm) or C2 (33 nm to 66 nm)), the particle size of E1 is significantly smaller. Smaller particle sizes provide more surface active sites, allowing reactants to come into contact with the active surface more easily and accelerating the reaction, thus effectively increasing the activity of the catalytic reaction. D 50 The values ​​represent the median particle size, and comparing E1-E7 with the corresponding comparative examples 1-9 (C1-C9), the overall result is D. 50 A smaller value indicates that the particle size distribution of the dimetallic catalyst materials E1~E7 is more concentrated and uniform. For example, D of E1 50 The value is 47.5 nm, which is smaller than C1 (47.7 nm) and C2 (49.9 nm). Smaller particles provide a larger surface area and active sites, allowing the catalyst to exhibit higher activity and stability during the reaction process. Therefore, E1 to E7 particles, which have smaller D50 values, are beneficial for improving catalytic activity.

[0110] In terms of specific surface area, Examples 1-7 (E1-E7) have a larger specific surface area than the corresponding Comparative Examples 1-9 (C1-C9). For example, the specific surface area of ​​E4 is 402.1 m². 2 / g, and C5 is 339.4m 2 It is large compared to the specific surface area of ​​ / g. Examples 1-7 have a larger surface area, which allows them to provide a sufficient active surface and thus promote the reaction, which is advantageous for improving reaction rate and efficiency.

[0111] In terms of total pore volume, Examples 1-7 (E1-E7) have a smaller total pore volume than the corresponding Comparative Examples 1-9 (C1-C9). For example, the total pore volume of E1 is 0.37 cm³. 3 / g, and C1 is 0.39 cm 3 / g, C2 0.38cm 3It is smaller compared to / g. That is, the pore volume of Examples 1 to 7 is slightly lower. However, even if the total pore volume is small, the pore structure and size may have a positive impact on the performance of the catalyst.

[0112] In terms of pore diameter, Examples 1 to 7 (E1 to E7) have a smaller pore diameter than the corresponding Comparative Examples 1 to 9 (C1 to C9). For example, the pore diameter of E3 is 9.2 nm, C3 is 14.9 nm, and C4 is 14.7 nm. This indicates that the bimetallic catalyst material can promote the diffusion of molecules more and improve the catalytic effect.

[0113] In summary, the bimetallic catalyst materials of E1 to E7 have a smaller particle size than the catalyst materials of C1 to C9. By providing more surface active sites, they promote the reaction and enhance the reaction activity. At the same time, due to having a suitable specific surface area and pore diameter, they provide good molecular diffusion conditions and can enhance the overall performance of the catalyst. Moreover, a smaller D50 value makes the particle distribution more concentrated and the particle size more uniform, which is beneficial for stable reactions and improved selectivity. Compared with C1 to C9, the bimetallic catalyst materials of E1 to E7 bring a significant synergistic effect, can enhance the reaction activity, selectivity, and stability, and have obvious advantages.

[0114] [Table 2] Sizes, D of the catalyst materials of Examples 1 to 7 (E1 to E7) and Comparative Examples 1 to 9 (C1 to C9) 50 value, specific surface area, total pore volume, pore diameter TIFF2026112359000003.tif171153

[0115] 《Decomposition Effect of Catalyst Materials on Molecular Pollutants in Air》

[0116] To verify the decomposition effect of the catalyst materials of Examples 1-7 (E1-E7) and Comparative Examples 1-9 (C1-C9) on airborne molecular pollutants, as shown in Table 3, different pollutant gases (isopropyl alcohol (IPA) or acetone), whether or not an oxidizing agent (O3) was added, and the initial concentration of the pollutant (0.5 ppm or 100 ppm) were used as control factors. The catalyst materials of each example were expanded into groups A, B, and C. For example, Example 1 was expanded to form Examples 1A to 1C (E1A to E1C). Also, each comparative example was expanded to form group A. For example, Comparative Example 1 was expanded to form Comparative Example 1A (C1A). Specifically, 0.5 g of catalyst material from each group of examples and comparative examples was uniformly distributed onto 0.1 g of quartz wool. Then, the quartz wool and catalyst material were packed into a reaction tube (U-shaped glass tube, inner diameter 7 mm, tube length 150 mm), and isopropyl alcohol or acetone oxidation reaction tests were carried out at different temperatures. The isopropyl alcohol and acetone concentrations at the reaction tube inlet were 0.5 ppm and 100 ppm, respectively, and the GHSV levels of both isopropyl alcohol and acetone were 6250 h. -1 The results were as follows: Isopropyl alcohol or acetone was introduced into reaction tubes at different temperatures, and the concentration of isopropyl alcohol or acetone at the outlet of the reaction tube was measured to confirm the efficiency of the catalyst material in removing isopropyl alcohol or acetone at different temperatures. The test results are shown in Table 4.

[0117] [Table 3] Test condition parameters such as source gas, oxidizer, relative humidity, and initial concentration of the source gas for catalyst material performance tests in Examples 1A-7C (E1A-E7C) and Comparative Examples 1A-9A (C1A-C9A). TIFF2026112359000004.tif213148

[0118] [Table 4] The contamination source removal rate, test duration, and T values ​​at 25°C for the catalyst material performance tests of Examples 1A-7C (E1A-E7C) and Comparative Examples 1A-9A (C1A-C9A). 90 Value result TIFF2026112359000005.tif213146

[0119] Table 4 shows the removal rate of contaminants and T at 25°C for the catalyst materials of Examples 1A-7C (E1A-E7C) and Comparative Examples 1A-9A (C1A-C9A). 90 The test results for the value can be obtained. In this experiment, T 90 The values ​​were measured by gradually increasing the temperature and checking the temperature at which the removal rate reached 90%.

[0120] Comparing E1A and E1B with C1A and C2A, at 25°C, the catalyst material of Example 1 (E1) showed a much higher removal rate than the catalyst material of Comparative Example 1 (C1), regardless of whether it was IPA or acetone. Furthermore, the removal time for E1A and E1B reached over 6000 hours (approximately 8.3 months), while C1A became ineffective in just 12 hours, and C2A was T 90 Because the temperature reached 254.3°C, it was not possible to measure the removal rate at room temperature. Furthermore, T 90 The values ​​showed that E1A and E1B achieved a 90% removal rate from the polluting gas at 25°C and 63.2°C, respectively. This indicates that E1A and E1B have a significant advantage over C1A and C2A in terms of the length of the removal time (service life) and the removal temperature (reduction of processing costs) from the polluting source.

[0121] Comparing E3A and E3B with C3A and C4A, at 25°C, the catalyst material of Example 3 (E3) had a lower removal rate than the catalyst materials of Comparative Examples 3 and 3 (C3 and C3), regardless of whether it was IPA or acetone. However, while the removal time for E3A and E3B reached over 6000 hours (approximately 8.3 months), C3A became ineffective in just 9 hours, and C4A was T 90 Because the temperature reached 281.4°C, it was not possible to measure the removal rate at room temperature. Furthermore, T 90The values ​​show that E3A and E3B achieved a 90% removal rate from the polluting gas at 92.5°C and 103.4°C, respectively. This indicates that E3A and E3B have significant advantages over C3A and C4A in terms of removal time (service life) and removal temperature (reduced processing costs) from the polluting source.

[0122] Comparing E4A and E4B with C5A, at 25°C, the catalyst material of Example 4 (E4) showed significantly higher removal rates than the catalyst material of Comparative Example 5 (C5), regardless of whether it was IPA or acetone. Furthermore, the removal time for E4A and E4B reached over 6000 hours (approximately 8.3 months), while C5A was T 90 Because the temperature reached 213.5°C, it was not possible to measure the removal rate at room temperature. Furthermore, T 90 The values ​​showed that E4A and E4B achieved a 90% removal rate from the polluting gas at 151.2°C and 164.5°C, respectively. This indicates that E4A and E4B have significant advantages over C5A in terms of the length of removal time (service life) and removal temperature (reduction of processing costs) from the polluting source.

[0123] Comparing E5A and E5B with C6A, at 25°C, the catalyst material of Example 5 (E5) showed significantly higher removal rates than the catalyst material of Comparative Example 6 (C6), regardless of whether it was IPA or acetone. Furthermore, the removal time for E5A and E5B reached over 6000 hours (approximately 8.3 months), while C6A was T 90 Because the value was above 200°C, it was not possible to measure the removal rate at room temperature. Furthermore, T 90 The values ​​show that E5A and E5B achieved a 90% removal rate from the polluting gas at 133.2°C and 171.4°C, respectively. This indicates that E5A and E5B have significant advantages over C6A in terms of the length of the removal time (service life) and the removal temperature (reduction of processing costs) from the polluting source.

[0124] Comparing E6A and E6B with C7A, it was found that at 25°C, the catalyst material of Example 6 (E6) had a significantly higher removal rate than the catalyst material of Comparative Example 7 (C7), regardless of whether it was IPA or acetone. Furthermore, the removal times for E6A, E6B, and C7A similarly reached over 6000 hours (approximately 8.3 months), but T 90 From the values, E6A reaches a removal rate of 90% of the pollutant gas at 117°C, compared to C7A's T 90 The value was found to be 156.8°C, which means that E6A has a considerable advantage over C6A in terms of the length of the removal time (service life) and the removal temperature (reduction of processing costs) from the source of contamination.

[0125] Comparing E7A and E7B with C8A and C9A, at 25°C, the catalyst material of Example 7 (E7), regardless of whether it was IPA or acetone, had a slightly lower removal rate than the catalyst material of Comparative Example 8 (C8), but a higher rate than the catalyst material of Comparative Example 9 (C9). Furthermore, the removal time for E7A and E7B reached over 6000 hours (approximately 8.3 months), while C8A became ineffective in just 19 hours, and C9A was T 90 Because the temperature reached 299.4°C, it was not possible to measure the removal rate at room temperature. Furthermore, T 90 From the values, E7A and E7B reach a removal rate of 90% for the polluting source gas at 82.1°C and 99.5°C, respectively, and C8A's T 90 The value was similarly 82.1°C, but the T of C9A 90 The value reached 299.4°C, demonstrating that E7A and E7B have a significant advantage over C8A and C9A in terms of removal time (service life) and removal temperature (reduction of processing costs) for contaminants.

[0126] Based on the experimental results described above, the catalyst materials of Examples 1-7 (E1-E7) are significantly superior to the catalyst materials of Comparative Examples 1-9 (C1-C9) in terms of IPA and acetone removal efficiency under room temperature or relatively high temperature conditions, and in particular, when used for extended periods, the removal time can reach 6000 hours or more in all cases. However, it should be emphasized that the 6,000 hours is not the time it takes for the catalyst materials of Examples 1 to 7 to become ineffective, but rather a limitation on the length of testing time that could be performed up to the time of filing this patent application, and that the actual service life may be longer. In addition, the catalyst material of the example is suitable for the temperature (T) required for treating the source of contamination. 90 It also shows a clear advantage in reducing (), which is beneficial for reducing operating costs.

[0127] Furthermore, although the precious metal content in some catalyst materials is relatively low, the presence of precious metals means that the filter media of the present invention can be recycled and reused, reducing resource waste and suppressing material costs for long-term use. This is noteworthy as it meets the needs of large-scale industrial applications and contributes to the realization of sustainable development.

[0128] Applications of catalytic materials

[0129] To verify the decomposition effect on airborne molecular pollutants, the catalyst materials of Examples 1-7 (E1-E7) were added to the support material in different amounts. The support material includes, but is not limited to, a fabric (e.g., woven or nonwoven fabric), a porous structure filler, or a mesh-like conductive substrate, and at least some of the catalyst material is coated on the surface of the support material so that it can come into contact with airborne molecular pollutants. In the application examples, a method for manufacturing sheet-like filter media and its applications (also called applications of catalyst materials) are disclosed. With a total weight of 100 wt% of the filter material, the filter material contained 1.7 to 28.3 wt% of catalyst material, 0.1 to 5 wt% of binder material, and 66.7 to 98 wt% of plastic material. The filter material was manufactured in the form of a nonwoven sheet material using melt-blown and needle-punching techniques on the above-mentioned catalyst material, binder material, and plastic material. The filter media is rectangular in shape with a thickness of 0.4 mm to 1.5 mm. It is then processed by vacuum forming to create multiple raised, linear, wavy patterns that are parallel to each other. The height of the peaks of the raised waves is 2.0 mm to 8.0 mm, the distance between the peaks of two adjacent wave patterns is 2.5 mm to 12.0 mm, and the direction of extension of the wave patterns is at an angle of 45 to 75 degrees with respect to the long side of the rectangular filter media.

[0130] In this application example 1, the total weight of the filter media is set to 100 wt%, and the filter media consists of 0 wt%, 1.7 wt%, 4.8 wt%, 11.5 wt%, and 28.3 wt% of the catalyst material (Fe1Ni2 / Al) from Example 4 (E4). x Si y O z ) and 2.5 wt% polyethylene oxide as a binder material, with the remainder being polyethylene terephthalate as the plastic material. Using the catalyst material, binder material, and plastic material described above, a filter material in the form of a nonwoven sheet was manufactured using melt-blown and needle-punching techniques. The filter material was rectangular in shape with a thickness of 0.8 mm, and was subsequently processed by vacuum forming to create multiple raised linear wave patterns parallel to each other. The height of the peaks of the raised waves was 6.0 mm, the distance between the peaks of two adjacent wave patterns was 7 mm, and the angle between the extension direction of the wave patterns and the long side of the rectangular filter material was 65 degrees.

[0131] Figure 4 shows Application Example 1 of the present invention. This is the catalyst material (Fe1Ni2 / Al) of Example 4 (E4). x Si y O z The removal efficiency of isopropyl alcohol (IPA) was tested after applying the substance to a fabric-like support material.

[0132] Application Example 1: Catalyst material (Fe1Ni2 / Al) of Example 4 (E4) x Si y O z ) Add to the cloth-like material

[0133] This filter media is divided into multiple 0.15 x 0.5 m sections. 2After cutting into blocks of the specified size, fill them into a reaction tube (U-shaped glass tube, inner diameter 7 mm, tube length 150 mm), and the volume of the filling material is 0.15 m³. 3 The temperature of the reaction tube was controlled to 25°C. Next, 100 ppm volatile isopropyl alcohol was introduced from the inlet of the reaction tube into a GHSV 15,000h tank. -1 The filter was introduced, and the isopropyl alcohol concentration was measured at the outlet of the reaction tube to confirm the isopropyl alcohol removal efficiency of the filter material. As shown in Figure 4, tests were conducted with no catalyst added and with four different catalyst addition ratios. Based on a standard isopropyl alcohol removal efficiency of 90%, when the catalyst material of the present invention was not added (0 wt%), only 72.5 ± 3.3% of isopropyl alcohol could be removed by the adsorption capacity of the plastic material itself. However, by increasing the amount of catalyst material added, it was possible to effectively remove 91.4 ± 3.6% of isopropyl alcohol even with a low addition amount of 4.8 wt%. Furthermore, when the amount added was increased to 28.3 wt%, the removal efficiency improved even further to 96.5 ± 1.9%. This demonstrates that the catalyst material of the present invention exhibits excellent gaseous pollutant removal effects when only a small amount is added to a fabric-like material in the form of a nonwoven sheet, and possesses high economic and industrial value.

[0134] As described above, the catalyst materials of the present invention demonstrated excellent gaseous pollutant removal effects in all of the applications in Application Example 1. In Application Example 1, the catalyst material achieved a removal efficiency of 95.3% even with a low addition amount of 4.8 wt%, and the removal efficiency increased with increasing addition amount. From the results of the application examples described above, it is clear that the catalyst material of the present invention can exhibit a stable and highly effective pollutant removal effect even when applied as a support material, and possesses significant industrial applicability and cost advantages.

Claims

1. A catalyst material comprising a carrier, a first transient metal and a second transient metal, The first transient metal and the second transient metal are each loaded in or supported on the carrier in the form of a single atom. The carrier is selected from the group consisting of iron nickel oxide (Fe ｘ Ni ｙ O ｚ ), silicon aluminate (Al ｘ Si ｙ O ｚ ), aluminum oxide (Al ２ O ３ ), and titanium oxide (TiO ２ ); the first transition metal is Fe, Cu, Ir or Pt; the second transition metal is Pd, Ni or Co; when the catalyst material is 100 wt%, the sum of the weight percentages of the first transition metal and the second transition metal is between 0.2 wt% and 2.5 wt%, and when the sum of the molar fraction of the second transition metal and the molar fraction of the first transition metal is 100%, the molar fraction of the second transition metal is 1 to 2 times the molar fraction of the first transition metal. A catalyst material characterized by this.

2. The catalyst material according to claim 1, characterized in that both the first transient metal and the second transient metal are single-atom metals.

3. The catalyst material according to claim 1, characterized in that the sizes of the first transient metal and the second transient metal are between 0.2 nm and 3.0 nm.

4. The size of the catalyst material is from 29 nm to 412 nm, D ５０ The catalyst material according to claim 1, characterized in that its wavelength ranges from 37.9 nm to 337.3 nm.

5. The specific surface area (BET) of the catalyst material is 119.4 m². ２ / g to 402.1m ２ The catalyst material according to claim 1, characterized in that it is / g.

6. The total pore volume of the catalyst material is 0.19 cm³. ３ / g to 0.81cm ３ The catalyst material according to claim 1, characterized in that it is / g.

7. The catalyst material according to claim 1, characterized in that the pore size of the catalyst material is between 9.2 nm and 47.2 nm.

8. A filter material that utilizes the catalyst material described in claim 1, wherein the catalyst material is added to a support material, the catalyst material and the support material together form a filter material used for filtering airborne molecular pollutants (AMCs), and the filter material is used to decompose the airborne molecular pollutants by coming into contact with them.

9. The filter material according to claim 8, wherein the total weight of the filter material is 100 wt%, the filter material is formed in the form of a nonwoven sheet material by uniformly mixing 70 wt% to 99.9 wt% of a polymer composition and 0.1 wt% to 30 wt% of the catalyst material, and the polymer composition comprises at least a plastic material and a binder material.

10. The filter material according to claim 9, characterized in that, with a total weight of 100 wt%, the filter material comprises 1.7 to 28.3 wt% of the catalyst material, 0.1 to 5 wt% of the binder material, and 66.7 to 98 wt% of the plastic material.

11. The filter material according to claim 10, characterized in that, with a total weight of 100 wt%, the filter material comprises 4.8 to 28.3 wt% of the catalyst material, 0.1 to 5 wt% of the binder material, and 66.7 to 95.1 wt% of the plastic material.

12. The filter material according to claim 10, characterized in that the plastic material is polyethylene, polypropylene, polyethylene terephthalate, polyethylene terephthalate glycol, cyclohexanedimethanol, or nylon.

13. The filter material according to claim 12, characterized in that the binder material is polyvinyl alcohol, polyethylene oxide, polyvinyl acetate, ethylene-vinyl acetate copolymer, polyacrylic acid, or polyurethane.

14. The filter material according to claim 8, characterized in that the airborne molecular pollutant is acetone, isopropyl alcohol (IPA), ethanol, ethyl acetate, toluene, xylene, trichloroethylene, propylene glycol monomethyl ether (PGME), propylene glycol monomethyl ether acetate (PGMEA), dimethyl sulfoxide (DMSO), or N-methylpyrrolidone (NMP).

Images