Porous magnetized tourmaline catalytic sheet sintered by glass powder and preparation method of porous magnetized tourmaline catalytic sheet
By using lead-free cadmium low-temperature glass powder and precious metal coating technology, combined with magnet magnetization, the decomposition problem of tourmaline during high-temperature sintering is solved, low-temperature sintering and cost reduction are achieved, and the performance of the catalytic sheet is improved.
Patent Information
- Application Number
- CN202510331529.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2025-06-24
AI Technical Summary
When the sintering temperature of existing porous tourmaline ceramic devices is higher than the tourmaline decomposition temperature, tourmaline is easily decomposed into high-temperature minerals that are not tourmaline, and the glaze used is high cost or easy to fall off, making it difficult to meet the requirements of low-temperature sintering.
Lead-free cadmium low-temperature glass powder is used as the binder, and the sintering temperature is controlled at 500-700 degrees, combined with precious metal coating and magnet magnetization technology, porous magnetized tourmaline catalytic sheets are prepared.
The low-temperature sintering of tourmaline is achieved, the decomposition of tourmaline is avoided, the cost is reduced, and the catalytic performance and stability of the catalytic sheet is improved through the synergy of magnets, tourmalines and precious metals.
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Figure CN120192176A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of catalysis in the manufacture of glass products, and particularly to a porous magnetized tourmaline catalytic sheet sintered with glass powder and a preparation method thereof. Background Art
[0002] Tourmaline is the only natural mineral in the earth's minerals that simultaneously has piezoelectric effect and pyroelectric effect. Micro-powdered tourmaline has positive and negative poles. When the external environment changes, such as light irradiation, temperature change, contact with water, etc., its electrical properties are prominent. The main functions of tourmaline are: (1) releasing negative ions: it has the effect of adjusting the ion balance of the human body, making the body and mind relax, activating cells, improving natural healing power, etc., and can inhibit the oxidation or aging of the body; (2) electrolyzing water: tourmaline will generate a weak current when contacting water, and has an electrolytic decomposition effect on water, making the water into weakly alkaline (pH value about 7.4) negative ion water with better taste and more beneficial to human health; (3) changing the large molecular clusters of water into small molecular clusters: the molecules in water do not exist alone, but are combined with each other to form water molecular clusters. The molecular cluster in tap water contains about 13 water molecules, the molecular cluster in pure water contains about 10 water molecules, and the molecular cluster in water treated by tourmaline contains 6-7 water molecules. Generally speaking, small molecular cluster water is more beneficial to the human body. Therefore, small molecular cluster water is called "energy water" in Japan; (4) emitting far-infrared rays: far-infrared rays can penetrate deep into the body, warm cells, promote blood circulation, and make metabolism smooth. The far-infrared ray emission power of tourmaline is nearly 100%, and the value is higher than that of other minerals; (5) containing various trace elements: tourmaline contains various minerals required by the human body, and can generate trace elements such as calcium, magnesium, and iron in water after contacting water, which has a very good supplementary effect on the human body.
[0003] Tourmaline has a wide range of uses, especially in the field of porous tourmaline ceramic devices, there are many achievements and many patents, but there are also some problems. Based on this, the present invention proposes a porous magnetized tourmaline catalytic sheet sintered with glass powder and a preparation method thereof, which can stimulate charge and far-infrared materials, and can produce magnetic field and noble metal catalytic material products. The products of the present invention can keep pure water at room temperature in a natural drinking water state with a low Hertz 17O-NMR half-peak width; can accelerate the aging rate of wine; and can degrade harmful substances in the air. Summary of the Invention
[0004] The purpose of the present invention is to provide a porous magnetized tourmaline catalytic sheet sintered with glass powder and a preparation method thereof, so as to solve the problems raised in the above background art.
[0005] To achieve the above object, the present invention provides the following technical solution: A porous magnetized tourmaline catalytic sheet sintered with glass powder, the catalytic sheet mainly consists of 5-10% of magnet, 20-30% of tourmaline, 5-10% of straight-chain diatomaceous earth, and 50-70% of lead-free and cadmium-free low-temperature glass powder, and its surface is coated with a noble metal film.
[0006] A preparation method of a porous magnetized tourmaline catalytic sheet sintered with glass powder, comprising the following steps:
[0007] S1, crush the magnet and tourmaline to 200-1250 mesh, purify the straight-chain diatomaceous earth to more than 95%, and crush the lead-free and cadmium-free low-temperature glass powder to 2000-5000 mesh;
[0008] S2, mix 5-10% of magnet powder, 20-30% of tourmaline powder, 5-10% of straight-chain diatomaceous earth, 50-70% of low-temperature lead-free and cadmium-free glass powder by mass percentage and add 4% glue to form the required adhesive concentration, dry and make powder, and load it into a mold to press and form to obtain a blank;
[0009] During the pressing and forming process, preliminarily magnetize the magnet in the blank so that the magnet directions are in the same direction.
[0010] S3, bury the blank in refractory materials such as kaolin powder or alumina powder, compact it, and send it to a kiln for sintering at a sintering temperature of 500-700 degrees to obtain a porous catalytic sheet;
[0011] S4, perform noble metal coating on the porous catalytic sheet;
[0012] S5, magnetize the magnet in the porous catalytic sheet again so that the magnet direction is consistent with the direction in S2.
[0013] Preferably, the magnet in S1 is food grade.
[0014] Preferably, the tourmaline in S1 is magnesian tourmaline or magnesioferrite tourmaline.
[0015] Preferably, the chemical composition of the lead-free and cadmium-free low-temperature glass powder in S1 is SiO2 26-28%, Al2O3 5-7%, B2O3 32-34%, Na2O 5-7%, K2O 1-3%, Li2O 2-4%, CaO 3-5%, MgO 0-1%, BaO 0-1%, ZnO 20-22%, others 1-2% (excluding Pb and Cd). The starting melting point is about 480 degrees, and the spherical melting point is about 610 degrees. The thermal expansion coefficient at 25-300 degrees is about 9.1×10 -6 / O C.
[0016] Preferably, the glue in S2 is mainly made of glue prepared from polyvinyl alcohol or methyl cellulose.
[0017] Preferably, the coating technology in S4 is one of ion beam coating evaporation, laser evaporation, radio frequency magnetron sputtering, reactive sputtering, and hot cathode sputtering. Noble metal elements: platinum (Pt), osmium (Os), iridium (Ir), ruthenium (Ru), rhodium (Rh), and palladium (Pd) are evaporated or sputtered for 10 s - 30 min.
[0018] Preferably, the magnetic induction intensity for magnetization in S2 and S5 is 8000 - 12000 gauss, and the magnetization time is 5 - 10 seconds.
[0019] The present invention has at least the following beneficial effects:
[0020] 1. The magnetic field of the magnet, the electric field of tourmaline, and the activation energy of noble metals all belong to weak catalytic materials. In this application, these three types of materials are organically combined. Without the action of external energy, the synergistic effect of these three combinations can be exerted, enabling pure water to maintain the state of natural drinking water with a low Hertz 17O - NMR half - peak width at room temperature; accelerating the aging rate of wine; and degrading harmful substances in the air with good effects, which is suitable for promotion. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0022] Figure 1 It is a flowchart of a preparation method of a porous magnetized tourmaline catalytic sheet sintered with glass powder according to the present invention;
[0023] Figure 2 It is an SEM image of Melosira diatomite in the present invention;
[0024] Figure 3 It is a schematic diagram of a sintering template in the present invention;
[0025] Figure 4 It is an SEM image of tourmaline in the present invention;
[0026] Figure 5 It is a schematic diagram of the existence form of wine in the wine bottle in Embodiment 3 of the present invention in the form of (C2H5OH) m @(H2O) n ;
[0027] Figure 6 It is a schematic diagram of a porous magnetized tourmaline catalytic sheet maintaining the balance state of small molecular clusters in drinking water in Embodiment 3 of the present invention;
[0028] Figure 7 Schematic diagram of the balance state of small molecular clusters in the water prepared in Example 4 of the present invention;
[0029] Figure 8 Schematic diagram of the porous magnetized tourmaline catalytic sheet maintaining the balance state of small molecular clusters in the medical water in Example 4 of the present invention. Detailed implementation manners
[0030] In order to make the technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0031] Example 1
[0032] The present invention provides a technical solution: Referring to Figure 1 , a porous magnetized tourmaline catalytic sheet sintered with glass powder disclosed in the present invention is mainly composed of 5-10% of magnetite, 20-30% of tourmaline, 5-10% of straight-chain diatomaceous earth, and 50-70% of lead-free and cadmium-free low-temperature glass powder, and a noble metal film is plated on its surface.
[0033] In this embodiment, the provided porous magnetized tourmaline catalytic sheet can keep pure water at room temperature in the state of natural drinking water with a low Hertz 17O-NMR half-peak width; it can accelerate the aging rate of wine; it can degrade harmful substances in the air; it can replace the filter element for automobile exhaust treatment; it can prepare hydrogen, etc. The realization of the present invention obtains a porous ceramic sheet with pyroelectricity, far-infrared rays, weak magnetism, and chemical catalysis through repeated experiments on the composition formula.
[0034] Example 2:
[0035] On the basis of Example 1, referring to Figure 1-4 shown, this embodiment discloses a preparation method of a porous magnetized tourmaline catalytic sheet sintered with glass powder, including the following steps:
[0036] S1, crush the magnetite and tourmaline to 200-1250 meshes, purify the straight-chain diatomaceous earth to more than 95% (the diatomaceous earth is straight-chain algae with larger inner pores conducive to liquid flow, such as Figure 2 shown), and crush the lead-free and cadmium-free low-temperature glass powder to 2000-5000 meshes;
[0037] S2, mix 5-10% of magnetite powder, 20-30% of tourmaline powder, 5-10% of straight-chain diatomaceous earth, and 50-70% of low-temperature lead-free and cadmium-free glass powder by mass percentage with 4% glue to form the required adhesive concentration, dry and make powder, and load it into a mold to press and form to obtain a blank;
[0038] During the pressing process, the magnets in the blank are initially magnetized so that the directions of the magnets are in the same direction.
[0039] S3, burying the blank in kaolin powder or aluminum oxide powder refractory material, compacting, and sending it into a kiln for sintering at a sintering temperature of 500-700 degrees to obtain a porous catalyst sheet;
[0040] S4, coating the porous catalyst sheet with a precious metal;
[0041] S5, magnetizing the magnet in the porous catalyst sheet again so that the direction of the magnet remains consistent with the direction in S2.
[0042] In this embodiment, during sintering in the prior art, some sintering temperatures are even higher than 800 degrees (Celsius), which is higher than the decomposition temperature of tourmaline, and tourmaline has been decomposed into other high-temperature minerals other than tourmaline; some use lead-cadmium-containing low-temperature glaze binders; some are lead-free cadmium glazes, but in actual operation, the glazes do not meet the requirements of low-temperature sintering tourmaline within the specified low-temperature range, and are easy to fall off and loosen; or the glazes close to low temperatures are expensive and costly. In this embodiment, lead-free cadmium low-temperature glass powder is used, which can be melted at 550 degrees, bonded to materials such as tourmaline, and will not react chemically with tourmaline, etc. When this method needs to be sintered, the catalyst sheet is placed in a suitable space and buried in the refractory powder material, and its high-temperature stage is controlled to maintain its original shape without loosening. The chemical composition of the lead-free cadmium low-temperature glass powder used in the present invention is SiO2 26-28%, Al2O3 5-7%, B2O3 32-34%, Na2O 5-7%, K2O 1-3%, Li2O 2-4%, CaO 3-5%, MgO 0-1%, BaO0-1%, ZnO 20-22%, and other 1-2% (excluding Pb and Cd). The initial melting point is about 480 degrees, the spherical melting point is about 610 degrees. The thermal expansion coefficient at 25-300 degrees is about 9.1×10 -6 / O C.
[0043] In the prior art, catalysts are used to reduce the activation energy of chemical reactions by changing the reaction pathway, thereby making the reaction easier to proceed. There are physical and chemical methods to change the activation energy. In this embodiment, there are always magnetic fields and micro-electric methods to change the activation energy. The precious metal chemical method mainly involves four processes: adsorption, activation, reaction and desorption.
[0044] Among them, magnetization magnetic field catalysis: The principle of magnetic catalysis technology is to use an alternating magnetic field to excite free radicals and reaction intermediates in chemical reactions, thereby accelerating the kinetic process of the reaction and promoting the generation and transformation of reaction intermediates. When the catalyst is surrounded by a magnetic field, they will generate Lorentz forces - the forces exerted by the magnetic field on moving charges. These forces will cause eddy current motion, thereby enhancing the movement of reactants and products on the surface of the catalyst, thus ensuring a more consistent and rapid reaction.
[0045] Tourmaline microelectrocatalysis: Microelectrocatalysis covers two aspects: the microelectrode reaction and catalysis of materials. Therefore, microelectrocatalysts must have these two functions simultaneously: ① generating charges and transmitting electrons relatively freely; ② being able to effectively activate the substrate. Binding the active component to the polar material electrode in the form of a covalent bond or chemical adsorption can achieve the dual purpose of both transmitting electrons and activating the substrate.
[0046] Specifically, in this embodiment, the magnet in S1 is food-grade, and due to its special structure and physical properties, the magnet can generate a permanent magnetic field. The Curie point of magnetite is 578 °C. When the temperature exceeds the Curie point temperature, the magnet will gradually demagnetize. In the prior art, when adding magnet raw materials, the temperature in the process far exceeds the Curie point temperature, but there is no external magnetization process after cooling, and the value of the magnet is not reflected at all. In this embodiment, the magnetization magnetic induction intensity in S2 and S5 is 8000 - 12000 gauss, and the magnetization time is 5 - 10 seconds. By using the magnetization method, the magnetic pole direction of the magnetic powder is fixed by an external magnetic field in the early stage. After high-temperature cooling, an external magnetic field in the same direction is applied again to restore the magnetic field intensity of the magnet powder.
[0047] Furthermore, during the pressing and forming process, a magnetic field is added during magnetization, so that the directions of the magnets are the same, which is beneficial for the magnets to exert the maximum efficiency. At the same time, in S5, remagnetization is carried out to make its magnetic pole direction unified with that in S2, ensuring the maximization of the magnetic intensity of the magnet. Moreover, the electromagnetic field will also generate an electrical excitation on the tourmaline, increasing the pyroelectric effect of the tourmaline.
[0048] Noble metal material catalysis: The principle of noble metal catalysis refers to using the special properties of noble metals and chemical reaction principles to promote chemical reactions. The following is reflected in the catalytic process:
[0049] (1) High activity: Noble metals have strong adsorption and activation abilities, and can achieve efficient catalysis at relatively low temperatures. Especially in automotive exhaust treatment, noble metal catalysts can achieve sufficient catalytic effects in a short time.
[0050] (2) High selectivity: Noble metal catalysts have high selectivity for specific reactions, and can preferentially promote the target reaction among various possible reactions, improving the yield of the target product.
[0051] (3) Good thermal stability: The noble metal catalyst has high stability under high-temperature conditions, is not prone to deactivation or structural changes, and ensures the long service life of the catalyst.
[0052] (4) Good anti-poisoning performance: Compared with other catalysts, the noble metal catalyst has better anti-poisoning performance. Through the design of appropriate carriers and additives, the noble metal catalyst can reduce the influence of impurities on the catalyst activity and improve the stability of the catalyst.
[0053] Specifically in this embodiment, the coating technology in S4 is one of ion beam coating evaporation, laser evaporation, radio frequency magnetron sputtering, reactive sputtering, and hot cathode sputtering. The noble metal elements: platinum (Pt), osmium (Os), iridium (Ir), ruthenium (Ru), rhodium (Rh), and palladium (Pd) are vapor-deposited or sputtered for 10 s - 30 min.
[0054] Magnetic field of magnet, electric field of tourmaline, and activation energy of noble metal all belong to weak catalytic materials. The present invention organically combines these three types of materials. Without the action of external energy, the synergistic effect of these three combinations can be exerted, enabling pure water to maintain the state of natural drinking water with a low Hertz 17O-NMR half-peak width at room temperature; accelerating the aging rate of wine; and degrading harmful substances in the air with good effects, which is suitable for popularization.
[0055] In some preferred embodiments, the tourmaline in S1 is magnesian tourmaline or magnesioferrite tourmaline because the decomposition temperature of sodium tourmaline or iron tourmaline is relatively low, unlike magnesian tourmaline or magnesioferrite tourmaline whose decomposition temperature reaches 750 °C.
[0056] In some preferred embodiments, the glue in S2 is mainly prepared from polyvinyl alcohol or methyl cellulose glue.
[0057] Example 3: Aging of wine
[0058] Based on Example 2, with reference to Figure 5 and Figure 6 as shown, this embodiment provides the technical effect of the porous magnetized tourmaline catalytic sheet in the aging of wine.
[0059] Take 10 bottles (500 mL) of the same batch (preferably new wine) of high-degree (more than 52 degrees) white wine (which can be Maotai-flavor, Luzhou-flavor, or Qingxiang-flavor, etc.). Among them, 5 bottles contain porous magnetized tourmaline catalytic sheets, and 1 - 2 grams of porous magnetized tourmaline catalytic sheets are placed in each bottle. Seal them and place them in an environment below 20 °C for static storage together. Compare the taste at 10 days, 30 days, and 3 months, respectively, which reflects two different effects. The alcohol content of the wine remains unchanged. Table 1 shows the result of adding 3 grams of porous magnetized tourmaline catalytic sheets.
[0060] Table 1 Aging effect of 3 grams of porous magnetized tourmaline catalytic tablets on wine
[0061]
[0062] In a wine bottle, both ethanol molecules and water molecules are polar molecules and will form ethanol molecular clusters, water molecular clusters, or mixed clusters. The density of ethanol is relatively small, so the ethanol concentration in the upper part of the wine bottle is higher than that in the lower part; on the contrary, the density of water molecules is greater than that of ethanol, so the water molecule concentration in the lower part is higher than that in the upper part. The porous magnetized tourmaline catalytic tablets will break up the water molecular clusters at the bottom and allow them to diffuse to the upper part of the wine bottle. At this time, the ethanol molecular clusters in the upper part have already formed clusters, and then let the water molecules form a layer of coating outside to form a liquid-phase core-shell structure. With aging over time, the wine in the wine bottle will be stored in the form of (C2H5OH) m @(H2O) n in the wine bottle, such as Figure 1 .
[0063] When the wine stored in the form of (C2H5OH) m @(H2O) n is consumed, due to the coating effect of (C2H5OH) m @(H2O) n , mostly water molecules come into contact with the taste buds, making people feel less stimulated by ethanol in the mouth and throat, and making people feel more comfortable.
[0064] Example 4: Low Hertz 17 O-NMR half-height width of water
[0065] Under normal conditions, polar water molecules in water are constantly clustering to form larger water molecular clusters. The larger water molecular clusters lose their activity and appear acidic on the surface. Small water molecular clusters have activity and are weakly alkaline. The activity of small water molecular clusters generally cannot be maintained for more than 8 hours. Currently, in the group standard "Natural Drinking Water with Low Hertz 17 O-NMR Half-Height Width", the standard for small water molecular clusters is determined, that is, the low Hertz 17 O-NMR half-height width does not exceed 100 Hz.
[0066] In order to obtain water with a low Hertz 17 O-NMR half-height width not exceeding 100 Hz, in this example, porous magnetized tourmaline catalytic tablets are used to keep high-purity water in a dynamic equilibrium state of small water molecular clusters. A 500 mL plastic bottle is used, and about 2 - 5 grams of porous magnetized tourmaline catalytic tablets are fixed at the bottom of the plastic bottle. The water in the bottle is detected and remains below 100 Hz for a long time.
[0067] In this embodiment, an experiment was conducted on maintaining 500 mL of pure water in a small molecular cluster state with a 2-gram porous magnetized tourmaline catalytic sheet. First, 500 mL of medical-grade water was boiled and quickly cooled to room temperature (≤10 min). Then, the pH value was measured, and partial 17 O-NMR half-peak width measurements were selectively performed. See Table 2.
[0068] Table 2 Effect of porous magnetized tourmaline catalytic sheet on the small molecular clustering of water molecular clusters
[0069]
[0070]
[0071] As can be seen from Table 2, medical-grade pure water condensed into large molecular cluster water in less than 6 hours; after 3 days, medical-grade pure water condensed into normal water molecular clusters, and the 17 O-NMR half-peak width of large molecular cluster water was basically greater than 140. If the porous magnetized tourmaline catalytic sheet was used on medical-grade pure water, after 30 days, whether it was 1 g or 2 g, its 17 O-NMR half-peak width was less than 85, indicating that a certain amount of porous magnetized tourmaline catalytic sheet could maintain 17 Small molecular cluster water with an O-NMR half-peak width less than 100 Hz frequency (Group Standard of "Natural Drinking Water with Low-Hertz 17O-NMR Half-Peak Width" (T / BJWA 004-2022)).
[0072] Example 5: In-vehicle air purification
[0073] In this example, three-box cars with one year of use were selected for this experiment. The temperature inside the car was 25 degrees, the humidity was 65, and the internal circulation was on. The changes were observed for 4 hours. The experiments were the data without the porous magnetized tourmaline catalytic sheet and the 4-hour data of 600 grams, 1200 grams, and 2000 grams in three cars. The porous magnetized tourmaline catalytic sheet was loaded in a mesh bag, with each bag containing 200 grams, and placed in different places inside the car. The experimental data are shown in Table 3.
[0074] Table 3 Air purification data of in-vehicle porous magnetized tourmaline catalytic sheet packages
[0075]
[0076]
[0077] As can be seen from the data in Table 3, the porous magnetized tourmaline catalytic sheet has a certain effect on in-vehicle purification, and it meets the standard when there are 6 packages of 1200 grams.
[0078] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.
Claims
1. A porous magnetized tourmaline catalyst sheet sintered with glass powder, characterized in that: The catalyst sheet is mainly composed of 5-10% magnetite, 20-30% tourmaline, 5-10% straight-chain diatomaceous earth, 50-70% lead-free cadmium low-temperature glass powder, and its surface is plated with a precious metal film.
2. A method for preparing a porous magnetized tourmaline catalyst sheet sintered with glass powder according to claim 1, characterized in that: The following steps are involved: S1, crushing magnetite and tourmaline into 200-1250 mesh, and crushing linear diatomite purified by more than 95% and lead-free and cadmium-free low-temperature glass powder into 2000-5000 mesh; S2, mixing 5-10% by mass of magnet powder, 20-30% by mass of tourmaline powder, 5-10% by mass of linear diatomaceous earth, 50-70% by mass of low-temperature lead-free cadmium low-temperature glass powder and 4% by mass of glue to a desired adhesive concentration, drying and powdering, and placing the powder into a mold for pressing to obtain a blank; During the pressing process, the magnets in the blank are initially magnetized so that the directions of the magnets are in the same direction. S3, burying the blank in kaolin powder or aluminum oxide powder refractory material, compacting, and sending it into a kiln for sintering at a sintering temperature of 500-700 degrees to obtain a porous catalyst sheet; S4, coating the porous catalyst sheet with a precious metal; S5, magnetizing the magnet in the porous catalyst sheet again so that the direction of the magnet remains consistent with the direction in S2.
3. The method for preparing a porous magnetized tourmaline catalyst sheet sintered with glass powder according to claim 2, characterized in that: The magnet in S1 is food grade.
4. The method for preparing a porous magnetized tourmaline catalyst sheet sintered with glass powder according to claim 3, characterized in that: The tourmaline in S1 is magnesian tourmaline or magnesian ferrous tourmaline.
5. The method for preparing a porous magnetized tourmaline catalyst sheet sintered with glass powder according to claim 4, characterized in that: The chemical composition of the lead-free cadmium low-temperature glass powder in S1 is SiO2 26-28%, Al2O3 5-7%, B2O3 32-34%, Na2O 5-7%, K2O 1-3%, Li2O 2-4%, CaO 3-5%, MgO 0-1%, BaO 0-1%, ZnO 20-22%, and other 1-2% (excluding Pb and Cd). The initial melting point is about 480 degrees, and the spherical melting point is about 610 degrees. The thermal expansion coefficient at 25-300 degrees is about 9.1×10 -6 / O C.
6. The method for preparing a porous magnetized tourmaline catalyst sheet sintered with glass powder according to claim 5, characterized in that: The glue in S2 is mainly made of polyvinyl alcohol or methylene cellulose.
7. The method for preparing a porous magnetized tourmaline catalyst sheet sintered with glass powder according to claim 6, characterized in that: The coating technology in S4 is one of ion beam coating beam evaporation, laser evaporation, radio frequency magnetron sputtering, reactive sputtering and hot cathode sputtering, and the precious metal elements: platinum (Pt), osmium (Os), iridium (Ir), ruthenium (Ru), rhodium (Rh) and palladium (Pd) are evaporated or sputtered for 10s-30min.
8. The method for preparing a porous magnetized tourmaline catalyst sheet sintered with glass powder according to claim 7, characterized in that: The magnetization magnetic induction intensity in S2 and S5 is 8000-12000 Gauss, and the magnetization time is 5-10 seconds.