Microporous ceramic catalyst carrier and method for its production

Abstract

The application discloses a microporous ceramic catalyst carrier and a preparation method thereof, and relates to the technical field.The application comprises the following raw materials: a base material, the base material comprising the following components in parts by weight: bauxite 30-50 parts, fused quartz 47-60 parts, and porcelain clay 10-36 parts; and a binder, the binder comprising the following components in parts by weight: heat-resistant phenolic resin 10-14 parts, fumed silica 23-26 parts, and mica powder 10-16 parts.The application uses bauxite as the main base material to replace alumina, and since the bauxite also contains silica inside and the content of the silica is not high, the bauxite can be better fused with the fused quartz when sintering, so that the sintering temperature is reduced, the forming rate is improved, and the wear resistance is enhanced, and then when the microporous ceramic catalyst carrier is formed, the microporous ceramic catalyst carrier has the advantages of small density, high strength, pressure resistance, stable chemical properties, strong universality, no pollution, multiple shape assembly, and adaptation to complex reaction design.

Description

Technical Field

[0001] This application relates to the technical field, specifically to a microporous ceramic catalyst support and its preparation method. Background Technology

[0002] Catalyst immobilization technology is an important means to make enzyme catalysis more widely and effectively utilized. It requires the following three aspects to complete: (1) extraction and purification of the original enzyme; (2) preparation of the carrier; (3) enzyme immobilization. At present, the research on enzyme purification technology and immobilization methods has been relatively developed. The success of immobilized enzymes mostly depends on the performance of the carrier. The design and synthesis of carriers with excellent and controllable performance are crucial. Microporous ceramics are a type of functional structural ceramic. The interior or surface of the ceramic body contains a large number of open or closed micropores with a pore size of micrometer or submicrometer. This porous solid surface characteristic gives it a large internal surface, i.e. a large surface energy, thus giving it a strong adsorption capacity, making it suitable as a carrier.

[0003] In the prior art, alumina is used as a raw material in the microporous ceramic catalyst support. The microporous ceramic catalyst support made of alumina has low strength and is easily damaged during use, which leads to deviations during the reaction.

[0004] Therefore, this invention proposes a microporous ceramic catalyst support and its preparation method to solve this problem. Summary of the Invention

[0005] The purpose of this application is to provide a microporous ceramic catalyst support and its preparation method in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application specifically adopts the following technical solution:

[0007] A microporous ceramic catalyst support, comprising the following raw materials:

[0008] The base material comprises the following components in parts by weight: 30-50 parts bauxite, 47-60 parts fused silica, and 10-36 parts kaolin.

[0009] An adhesive comprising the following components in parts by weight: 10-14 parts heat-resistant phenolic resin, 23-26 parts fumed silica, and 10-16 parts mica powder.

[0010] A reinforcing agent, wherein the reinforcing agent comprises 15-17 parts, and the reinforcing agent acts on the adhesive to increase the bonding strength between the adhesive and the base material;

[0011] The raw materials also include the following components: 6-17 parts of dispersant, 16-24 parts of glaze, 25-27 parts of catalyst, and 30-33 parts of dehydration component;

[0012] Using bauxite as the main base material instead of alumina, and because it contains silicon dioxide in low amounts, it can better fuse with fused silica during sintering. This reduces the sintering temperature, increases the molding rate, and enhances wear resistance. As a result, the microporous ceramic catalyst support, once formed, has the advantages of low density, high strength, compressive strength, stable chemical properties, wide applicability, no pollution, and the ability to be assembled in various shapes to adapt to complex reaction designs.

[0013] Furthermore, the heat-resistant phenolic resin is boron phenolic resin, and its weight is 12 parts;

[0014] Using boron phenolic resin as a raw material has two advantages: firstly, the raw material is readily available and the preparation cost is low; secondly, boron phenolic resin is an epoxy-modified boron phenolic resin. The phenolic hydroxyl groups in the phenolic resin and the hydroxyl groups in the bisphenol A type epoxy resin undergo an etherification reaction, causing the hydroxyl groups in the phenolic resin and the hydroxyl groups in the bisphenol A type epoxy resin to combine with each other, removing one molecule of water to form an ether bond. Subsequently, the hydroxymethyl groups in the phenolic resin and the terminal epoxy groups in the bisphenol A type epoxy resin undergo a ring-opening reaction to form a three-dimensional structure. In other words, the curing effect of the bisphenol A type epoxy resin is activated by the phenolic resin, further changing the structure. Due to its complex structure, this modified resin has good adhesion and toughness.

[0015] Furthermore, the reinforcing agent comprises the following components in parts by weight: 8 parts methyl hydroxypropyl cellulose and 8 parts polyvinyl alcohol;

[0016] By incorporating methyl hydroxypropyl cellulose (MHC) and polyvinyl alcohol (PVA), MHC imparts lubricity and water retention to the raw material components during the reaction, and enhances the original strength of the raw materials. The concentrated solution is adsorbed onto the surface of ceramic particles, reducing friction between particles and enhancing their lubricity, further increasing the strength of the microporous ceramic catalyst support after molding. PVA is a high molecular weight compound that binds through hydrogen bonding, hydroxyl reactions, sodium ion interactions, and cross-linking structures, thereby increasing the bonding strength between the various components within the raw materials.

[0017] Furthermore, the dispersant comprises the following components in parts by weight: 8 parts sodium silicate, 2 parts sodium dodecyl sulfate, and 4 parts methylpentanol;

[0018] Sodium silicate, sodium dodecyl sulfate, and methylpentanol are used as dispersants. Sodium silicate's main mechanism as a dispersant involves the interaction of multiple factors, including its ionic properties, hydrate formation, surface activity, and alkalinity, enabling it to disperse effectively in water. Sodium dodecyl sulfate's molecular structure contains hydrophobic dodecyl chains, while sulfate and sodium ions are hydrophilic. When dissolved in water, sodium dodecyl sulfate forms micelle structures with hydrophilic head groups and hydrophobic chains. This structure reduces the surface tension of the liquid and provides emulsification and dispersion. Methylpentanol forms an adsorption layer on the surface of solid particles, increasing the surface charge and enhancing the interparticle reaction force that creates steric hindrance.

[0019] Furthermore, the glaze comprises the following components in parts by weight: 10 parts magnesium oxide, 4 parts sodium chloride, and 3 parts active zinc oxide;

[0020] During use, magnesium oxide is used as a solvent to initially fuse sodium chloride and active zinc oxide to form a glaze, which acts as a protective coating on the surface of the microporous ceramic catalyst carrier, reducing the possibility of wear caused by external objects.

[0021] Furthermore, the catalyst comprises the following components in parts by weight: 12 parts of denitrification catalyst and 14 parts of amorphous silicon carbide catalyst.

[0022] Furthermore, the dehydration component comprises the following components in parts by weight: 15 parts activated carbon and 17 parts sponge;

[0023] When using it, apply activated carbon to the outside of the kaolin and bauxite, and then wrap it with a sponge to absorb the moisture inside the two materials, reducing excess moisture and minimizing its impact on the concentration of other raw materials.

[0024] Furthermore, the raw material composition is as follows: 43 parts bauxite, 55 parts fused silica, 27 parts kaolin, 12 parts heat-resistant phenolic resin, 24 parts fumed silica, 16 parts mica powder, 16 parts reinforcing agent, 14 parts dispersant, 17 parts glaze, 26 parts catalyst, and 32 parts dehydrating component.

[0025] This application also provides a method for preparing a microporous ceramic catalyst support, which includes the following steps:

[0026] S1. Mix the dehydrated component with the base material to dehydrate the base material;

[0027] S2. Select the base material and the adhesive and mix them to obtain the first desired result;

[0028] S3. Add a reinforcing agent, a dispersant, and a catalyst to the first preform and mix them to obtain the second preform;

[0029] S4. The second material is dried, shaped and fired to obtain a blank. Glaze is then applied to the blank to complete the preparation.

[0030] Furthermore, in step S4, when shaping the blank, it is set into a cylindrical shape, and when applying glaze, the two ends of the cylindrical blank in the radial direction are coated.

[0031] The beneficial effects of this application are as follows:

[0032] This application uses bauxite as the main base material to replace alumina. Because it also contains silicon dioxide in a low content, it can better fuse with fused silica during sintering. This reduces the sintering temperature, increases the molding rate, and enhances wear resistance. As a result, the microporous ceramic catalyst support, once formed, has the advantages of low density, high strength, compressive strength, stable chemical properties, wide applicability, no pollution, and the ability to be assembled in various shapes to adapt to complex reaction designs.

[0033] This application uses boron phenolic resin as a raw material. Firstly, boron phenolic resin is readily available and has a low preparation cost. Secondly, the boron phenolic resin is an epoxy-modified boron phenolic resin. The phenolic hydroxyl groups in the phenolic resin and the hydroxyl groups in the bisphenol A type epoxy resin undergo an etherification reaction, causing the hydroxyl groups in the phenolic resin and the hydroxyl groups in the bisphenol A type epoxy resin to combine with each other, removing one molecule of water to form an ether bond. Subsequently, the hydroxymethyl groups in the phenolic resin and the terminal epoxy groups in the bisphenol A type epoxy resin undergo a ring-opening reaction to form a three-dimensional structure. In other words, the curing effect of the bisphenol A type epoxy resin is activated by the phenolic resin, further changing the structure. Due to its complex structure, this modified resin has good adhesion and toughness.

[0034] This application incorporates methyl hydroxypropyl cellulose and polyvinyl alcohol. During the reaction, methyl hydroxypropyl cellulose imparts lubricity and water retention to the raw material components and improves the original strength of the raw materials. The concentrated solution is adsorbed onto the surface of ceramic particles, reducing friction between particles and enhancing their lubricity, further increasing the strength of the microporous ceramic catalyst support after molding. Polyvinyl alcohol is a high molecular weight compound that binds through hydrogen bonding, hydroxyl reactions, sodium ion interactions, and cross-linking structures, thereby increasing the bonding strength between the various components within the raw materials.

[0035] This application uses sodium silicate, sodium dodecyl sulfate, and methylpentanol as dispersants. When used, sodium silicate acts as a dispersant primarily through the interaction of various factors, including its ionic properties, hydrate formation, surface activity, and alkalinity, enabling it to be effectively dispersed in water. Sodium dodecyl sulfate has a hydrophobic dodecyl chain in its molecular structure, while sulfate and sodium ions are hydrophilic. When sodium dodecyl sulfate dissolves in water, it forms a micelle structure with hydrophilic head groups and hydrophobic chains. This structure allows sodium dodecyl sulfate to reduce the surface tension of the liquid and has emulsifying and dispersing effects. Methylpentanol forms an adsorption layer on the surface of solid particles, increasing the surface charge of the solid particles and enhancing the interparticle reaction force that creates steric hindrance.

[0036] In use, this application uses magnesium oxide as a solvent to initially fuse sodium chloride and active zinc oxide to form a glaze, which acts as a protective coating adhering to the surface of the microporous ceramic catalyst support, reducing the possibility of wear caused by external objects on the microporous ceramic catalyst support.

[0037] This application uses a denitrification catalyst and an amorphous silicon carbide catalyst as catalysts. During use, the denitrification catalyst not only plays a catalytic role but also reduces the nitrogen oxide content in the exhaust gas by converting nitrogen oxides into nitrogen and water vapor, thereby reducing air pollution. The principle of the SCR denitrification process is that, under the action of the catalyst, the reducing agent reacts with the nitrogen oxides in the flue gas to generate harmless nitrogen and water, thereby removing nitrogen oxides from the flue gas. The amorphous silicon carbide catalyst has high catalytic activity and thermal stability. It achieves physical or chemical adsorption of substrate molecules on the surface of the ASC catalyst through carbon-silicon bonds at the active sites, causing the substrate molecules to undergo chemical reactions on the catalyst surface to form active intermediates. The active intermediates further react to generate products, which are then desorbed from the catalyst surface, releasing the catalyst to participate in the reaction again.

[0038] In this application, activated carbon is applied to the outside of kaolin and bauxite, and then wrapped around the outside with a sponge to absorb moisture from the inside of the two materials, thereby reducing excess moisture and minimizing the impact on the concentration of other raw materials. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the preparation process steps in this application. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0041] One embodiment of this application discloses a microporous ceramic catalyst support comprising the following raw materials:

[0042] The base material includes the following components by weight: 30-50 parts of bauxite, which contains not only alumina but also silicon dioxide. Kaolin can also be added to the raw material. The preparation is carried out using bauxite as a raw material, which also solves the problem of using inferior mineral resources. It has strong scalability and solves the problem of low universality of catalyst carriers.

[0043] Fused silica (47-60 parts) is produced by melting natural high-purity silica in an electric furnace at a temperature above 1760°C and then rapidly cooling it. This process transforms crystalline silica into an amorphous glass melt. Fused silica has a melting temperature of approximately 1713°C, low thermal conductivity, and the lowest coefficient of thermal expansion among all refractory materials. Therefore, it has extremely high thermal shock stability. During the reaction, it facilitates the combination of bauxite and fused silica through the silica in the bauxite. This results in the microporous ceramic catalyst carrier having advantages such as low density, high strength, compressive strength, stable chemical properties, wide applicability, no pollution, and the ability to be assembled in various shapes to adapt to complex reaction designs.

[0044] 10-36 parts of porcelain clay serve as the basic material for ceramic preparation. During sintering, it acts as a basic aggregate to support other raw materials.

[0045] The adhesive comprises the following components by weight: 10-14 parts of heat-resistant phenolic resin, which also acts as a filler. When used, the heat-resistant phenolic resin is melted to facilitate the bonding of the remaining parts of the raw material. It has the advantages of high temperature resistance, oxidation resistance, erosion resistance, and high mechanical strength. It can be used at temperatures above 1000℃ in oxidizing environments, which further increases the strength and heat resistance of the microporous ceramic catalyst carrier.

[0046] Fumed silica (23-26 parts) can also replace nano-alumina. Since bauxite contains relatively few aluminum ions, fumed silica can replace these aluminum ions, allowing ceramics to be formed even with fewer aluminum ions. It can function as nanoparticles, and as fumed particles, it not only improves the strength and toughness of ceramic materials, but also enhances their hardness and elastic modulus. Its effect is more ideal than adding alumina. Using fumed silica to composite ceramic substrates not only improves the density, toughness, and smoothness of the formed device, but also significantly reduces the sintering temperature.

[0047] 10-16 parts of mica powder, which also contains some alumina to supplement aluminum ions, and has good wear resistance. Mica powder also has plasticity and flexibility, which makes it easy to shape the microporous ceramic catalyst carrier after it is prepared.

[0048] The reinforcing agent consists of 15-17 parts. It acts on the binder to increase the bonding strength between the binder and the base material. In use, the reinforcing agent enhances the effect of the binder, thereby increasing the degree of fusion between the base materials and facilitating the molding of the microporous ceramic catalyst carrier.

[0049] The raw materials also include the following components: 6-17 parts of dispersant, which is used to disperse the surface tension of the liquid after the various materials are melted, so as to facilitate better fusion between the materials;

[0050] 16-24 parts of glaze are used to protect the microporous ceramic catalyst carrier after it has been formed, thereby reducing friction during transportation or when it is not in use.

[0051] 25-27 parts of catalyst are used to increase the reaction rate, thereby improving the efficiency of preparation.

[0052] The dehydrating component, 30-33 parts, is used to dehydrate the kaolin and bauxite before preparation, removing excess water, reducing the impact of excess water on the concentration of subsequent raw materials, and increasing the feasibility of the reaction.

[0053] Compared with existing technologies, using bauxite as the main base material instead of alumina, and because it also contains silicon dioxide in low amounts, it can better fuse with fused silica during sintering. This reduces the sintering temperature, increases the forming rate, and enhances wear resistance. As a result, the microporous ceramic catalyst support, once formed, has the advantages of low density, high strength, compressive strength, stable chemical properties, wide applicability, no pollution, and the ability to be assembled in various shapes to adapt to complex reaction designs.

[0054] In some embodiments, the heat-resistant phenolic resin is boron phenolic resin, with a weight of 12 parts. Firstly, the raw materials for boron phenolic resin are readily available, resulting in low preparation costs. Secondly, the boron phenolic resin is an epoxy-modified boron phenolic resin. The phenolic hydroxyl groups in the phenolic resin and the hydroxyl groups in the bisphenol A type epoxy resin undergo an etherification reaction, causing the hydroxyl groups in the phenolic resin and the hydroxyl groups in the bisphenol A type epoxy resin to combine with each other, removing one molecule of water to form an ether bond. Subsequently, the hydroxymethyl groups in the phenolic resin and the terminal epoxy groups in the bisphenol A type epoxy resin undergo a ring-opening reaction to form a three-dimensional structure. In other words, the curing effect of the bisphenol A type epoxy resin is activated by the phenolic resin, further changing the structure. Due to its complex structure, this modified resin has good adhesion and toughness.

[0055] In some embodiments, the reinforcing agent includes the following components in parts by weight: 8 parts of methyl hydroxypropyl cellulose. Methyl hydroxypropyl cellulose imparts lubricity and water retention between the raw material components and improves the original strength of the raw materials. The concentrated solution is adsorbed on the surface of the ceramic particles, which reduces the friction between the particles and enhances their lubricity, further increasing the strength of the microporous ceramic catalyst support after molding.

[0056] Eight parts of polyvinyl alcohol. Polyvinyl alcohol is a high molecular weight compound that binds components through hydrogen bonding, hydroxyl reactions, sodium ion interactions, and cross-linking structures, thereby increasing the bonding strength between the various components within the raw material.

[0057] In some embodiments, the dispersant comprises the following components in parts by weight: 8 parts sodium silicate. The main mechanism of sodium silicate as a dispersant is through the interaction of various factors such as its ionic properties, hydrate formation, surface activity and alkalinity, which enables it to be effectively dispersed in water.

[0058] Two parts of sodium dodecyl sulfate. The dodecyl chain in its molecular structure is hydrophobic, while the sulfate and sodium ions are hydrophilic. When sodium dodecyl sulfate is dissolved in water, it can form a micelle structure with hydrophilic head groups of hydrophobic chains. This structure enables sodium dodecyl sulfate to reduce the surface tension of the liquid surface and has emulsifying and dispersing effects.

[0059] Four parts of methylpentanol form an adsorption layer on the surface of solid particles, increasing the surface charge of the solid particles and enhancing the reaction force between particles that form steric hindrance.

[0060] In some embodiments, the glaze comprises the following components in parts by weight: 10 parts magnesium oxide, 4 parts sodium chloride, and 3 parts active zinc oxide. In use, magnesium oxide is used as a solvent to initially fuse sodium chloride and active zinc oxide to form a glaze, which acts as a protective coating and adheres to the surface of the microporous ceramic catalyst carrier, reducing the possibility of wear caused by external objects on the microporous ceramic catalyst carrier.

[0061] In some embodiments, the catalyst includes the following components in parts by weight: 12 parts of denitrification catalyst. While playing a catalytic role, the denitrification catalyst reduces the content of nitrogen oxides in the exhaust gas by converting nitrogen oxides into nitrogen and water vapor, thereby reducing air pollution. The principle of SCR denitrification process is that under the action of the catalyst, the reducing agent reacts with the nitrogen oxides in the flue gas to generate harmless nitrogen and water, thereby removing nitrogen oxides from the flue gas.

[0062] Fourteen parts of amorphous silicon carbide catalyst, which have high catalytic activity and thermal stability, are used to physically or chemically adsorb substrate molecules onto the surface of ASC catalyst through carbon-silicon bonds at active sites. This allows the substrate molecules to undergo chemical reactions on the catalyst surface, forming active intermediates. The active intermediates further react to generate products, which are then desorbed from the catalyst surface, releasing the catalyst to participate in the reaction again.

[0063] In some embodiments, the dehydration component includes the following components in parts by weight: 15 parts activated carbon and 17 parts sponge. In use, the activated carbon is coated on the outside of the kaolin and bauxite, and then wrapped on the outside by the sponge, thereby adsorbing the moisture inside the two materials, reducing excess moisture and minimizing the impact on the concentration of other raw materials.

[0064] In some embodiments, the raw materials consist of 43 parts bauxite, 55 parts fused silica, 27 parts kaolin, 12 parts heat-resistant phenolic resin, 24 parts fumed silica, and 16 parts mica powder.

[0065] 16 parts of reinforcing agent, including 8 parts of methyl hydroxypropyl cellulose and 8 parts of polyvinyl alcohol;

[0066] 14 parts of dispersant, including 8 parts sodium silicate, 2 parts sodium dodecyl sulfate, and 4 parts methylpentanol;

[0067] The glaze consists of 17 parts, including 10 parts magnesium oxide, 4 parts sodium chloride, and 3 parts active zinc oxide.

[0068] 26 parts of catalyst, including 12 parts of denitrification catalyst and 14 parts of amorphous silicon carbide catalyst;

[0069] The dehydration component consists of 32 parts, including 15 parts activated carbon and 17 parts sponge;

[0070] During preparation, each component is weighed in batches to facilitate subsequent preparation.

[0071] like Figure 1 As shown, this application also provides a method for preparing a microporous ceramic catalyst support, which includes the following steps:

[0072] S1. Mix the dehydrating component with the base material to dehydrate the base material. When using, the dehydrating component is wrapped around the outside of the base material to absorb the moisture inside the base material.

[0073] S2. Select the base material and the adhesive and mix them to obtain the first desired result;

[0074] S3. Add a reinforcing agent, a dispersant, and a catalyst to the first preform and mix them to obtain the second preform;

[0075] S4. The second material is dried, shaped and fired to obtain a blank. Glaze is then applied to the blank to complete the preparation.

[0076] like Figure 1 As shown, in some embodiments, in step S4, when shaping the preform, it is set into a cylindrical shape. When applying glaze, the two ends of the cylindrical preform in the radial direction are coated. When in use, the ends of the cylindrical preform are coated with glaze, so that when stored, its bottom is protected by glaze and its cylindrical body is exposed, which facilitates better contact with the reactants when in use, thus increasing the practicality of the microporous ceramic catalyst carrier.

[0077] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for preparing a microporous ceramic catalyst support, characterized in that, Includes the following steps: S1. Mix the dehydrated component with the base material to dehydrate the base material; S2. Select the base material and the adhesive and mix them to obtain the first desired result; S3. Add a reinforcing agent, a dispersant, and a catalyst to the first preform and mix them to obtain the second preform; S4. The second material is dried, shaped and fired to obtain a blank. Glaze is applied to the blank to complete the preparation. In step S4, when shaping the blank, it is set into a cylindrical shape, and when applying glaze, the two ends of the cylindrical blank in the radial direction are coated. The aforementioned carrier includes the following raw materials: The base material comprises the following components in parts by weight: 30-50 parts bauxite, 47-60 parts fused silica, and 10-36 parts kaolin. An adhesive comprising the following components in parts by weight: 10-14 parts heat-resistant phenolic resin, 23-26 parts fumed silica, and 10-16 parts mica powder; The reinforcing agent comprises 15-17 parts and acts on the adhesive to increase the bonding strength between the adhesive and the base material. The reinforcing agent includes methyl hydroxypropyl cellulose and polyvinyl alcohol. The raw materials also include the following components: 6-17 parts of dispersant, 16-24 parts of glaze, 25-27 parts of catalyst, and 30-33 parts of dehydration component.

2. The method for preparing the microporous ceramic catalyst support according to claim 1, characterized in that, The heat-resistant phenolic resin is boron phenolic resin, and its weight is 12 parts.

3. The method for preparing the microporous ceramic catalyst support according to claim 1, characterized in that, The reinforcing agent comprises the following components in parts by weight: 8 parts methyl hydroxypropyl cellulose and 8 parts polyvinyl alcohol.

4. The method for preparing the microporous ceramic catalyst support according to claim 1, characterized in that, The dispersant comprises the following components in parts by weight: 8 parts sodium silicate, 2 parts sodium dodecyl sulfate, and 4 parts methylpentanol.

5. The method for preparing the microporous ceramic catalyst support according to claim 1, characterized in that, The glaze comprises the following components in parts by weight: 10 parts magnesium oxide, 4 parts sodium chloride, and 3 parts active zinc oxide.

6. The method for preparing the microporous ceramic catalyst support according to claim 1, characterized in that, The catalyst comprises the following components in parts by weight: 12 parts of denitrification catalyst and 14 parts of amorphous silicon carbide catalyst.

7. The method for preparing the microporous ceramic catalyst support according to claim 1, characterized in that, The dehydration component comprises the following components in parts by weight: 15 parts activated carbon and 17 parts sponge.

8. The method for preparing the microporous ceramic catalyst support according to claim 1, characterized in that, The raw materials consist of 43 parts bauxite, 55 parts fused silica, 27 parts kaolin, 12 parts heat-resistant phenolic resin, 24 parts fumed silica, 16 parts mica powder, 16 parts reinforcing agent, 14 parts dispersant, 17 parts glaze, 26 parts catalyst, and 32 parts dehydrating components.

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