Honeycomb CO oxidation catalyst carrier material based on metal loading and preparation method and device thereof

Abstract

The invention relates to a honeycomb CO oxidation catalyst carrier material based on metal loading and a preparation method thereof, and belongs to the field of catalyst preparation, the carrier material comprises the following components by weight: 80-85 parts of TiO2; 3 to 6 parts of WO3; 1 to 5 parts of V2O5; 10 to 15 parts of Al2O3; and 5 to 10 parts of SiO2. The catalyst has the advantages that through an optimized formula and a preparation process, the catalyst can realize efficient CO oxidation under a low-temperature condition, and the catalytic efficiency is remarkably improved.

Description

Technical Field

[0001] The invention relates to a metal-loaded honeycomb CO oxidation catalyst carrier material, belonging to the field of catalysts. Background Art

[0002] In the steel sintering machine industry, carbon monoxide (CO) emissions are particularly serious. Sintering is a key step in the steel production process, which involves mixing and heating iron ore powder, fuel and solvent until they are partially melted to form a sintered ore with a certain strength. During this process, due to the incomplete combustion of carbon materials, a large amount of CO is produced. This is a colorless, odorless and toxic gas that poses a serious threat to human health and environmental safety.

[0003] The emission of CO is not limited to the harm to operators. Its accumulation in the atmosphere will also lead to the intensification of the greenhouse effect and have a negative impact on global climate change. In addition, CO can also react with other substances in the atmosphere to form environmental problems such as photochemical smog, further affecting air quality and ecological balance.

[0004] In order to effectively control and reduce CO emissions in the steel sintering machine industry, it is urgent to develop efficient CO catalytic oxidation catalysts. These catalysts should have high activity, high stability and long life under sintering machine operating conditions to ensure that they can maintain excellent catalytic performance in harsh environments such as high temperature, dust, and fluctuating gas composition.

[0005] The disadvantages are:

[0006] Inefficient CO conversion: Conventional catalytic oxidation methods may not be able to maintain efficient CO conversion under all operating conditions, especially in high temperature and dusty environments such as the steel sintering machine industry.

[0007] Poor catalyst stability: Existing catalysts may lack stability in high temperature and fluctuating industrial environments, resulting in loss of active components or damage to the carrier structure, thereby reducing catalytic efficiency and service life.

[0008] Cost-effectiveness issue: Although precious metal catalysts have high activity and selectivity, their high cost and resource scarcity limit their large-scale application in the steel sintering machine industry. Summary of the invention

[0009] In order to overcome the defects of the prior art, the present invention provides a metal-supported honeycomb CO oxidation catalyst carrier material and a preparation method thereof. The technical solution of the present invention is:

[0010] A metal-loaded honeycomb CO oxidation catalyst carrier material comprises the following components in parts by weight: 80-85 parts of TiO2; 3-6 parts of WO3; 1-5 parts of V2O5; 10-15 parts of Al2O3; and 5-10 parts of SiO2.

[0011] The described TiO2 is 82 parts; WO3 is 5 parts; V2O5 is 3 parts; Al2O3 is 12 parts; SiO2 is 8 parts.

[0012] A method for preparing a metal-supported honeycomb CO oxidation catalyst support material comprises the following steps:

[0013] (1) preparing an initial dry embryo module;

[0014] (2) soaking the initial dry embryo module in step (1) in a palladium salt solution;

[0015] (3) Drying and calcination activation are performed to obtain a honeycomb CO oxidation catalyst support material.

[0016] The step (1) is specifically as follows:

[0017] (1-1) Raw material preparation: weigh the required TiO2, WO3, V2O5, Al2O3 and SiO2 raw materials, and mix them evenly to form a raw material mixture;

[0018] (1-2) Mixing and stirring: adding deionized water to the mixed raw materials, and stirring with a stirrer until a uniform slurry is formed; wherein the mass ratio of the deionized water to the raw material mixture is 1:2-3;

[0019] (1-3) pH adjustment: by adding an acid-base regulator, the pH value of the slurry is adjusted to 2-4 to promote the full reaction and gelation of the raw materials;

[0020] (1-4) Aging: The slurry with adjusted pH value is placed in a constant temperature environment for 24 hours to promote the formation of gel network;

[0021] (1-5) Filtration and molding: The aged slurry is filtered to remove excess impurities, and then extruded into the desired honeycomb shape using an extruder;

[0022] (1-6) Cutting and drying: The formed honeycomb modules are cut to obtain dry embryo modules of uniform size, and then dried to remove residual moisture.

[0023] The step (2) is specifically as follows:

[0024] (2-1) Preparation of palladium salt solution: prepare a palladium salt solution with a mass percentage of 1-3%, and adjust its pH value to 2-3;

[0025] (2-2) Impregnation: Immersing the dried embryo module in a palladium salt solution, controlling the immersion time to ensure that the embryo module fully absorbs the solution; after impregnation, taking out the embryo module and draining the solution; (2-3) Drying: Drying the impregnated embryo module to remove residual moisture;

[0026] The step (3) is specifically as follows:

[0027] (3-1) Final drying: The impregnated dry embryo module is finally dried at a temperature of 50-60°C for 72-120 hours to ensure that moisture is completely removed; (3-2) Calcination: The dried dry embryo module is calcined at a controlled temperature of 520-560°C for 6-8 hours to promote the bonding of palladium metal with the carrier material and activate the catalyst;

[0028] (3-3) Cooling and inspection: After calcination, the dry embryo module is cooled naturally. The cooled module is inspected for physical and chemical properties to ensure that it meets the performance requirements of the catalyst.

[0029] In the step (2-2), the immersion time is 1-3 hours.

[0030] In the step (2-3), the drying temperature ranges from 100 to 200° C., and the drying time is 5 to 20 hours.

[0031] A device for realizing a method for a metal-supported honeycomb CO oxidation catalyst support material, comprising:

[0032] The slurry mixing evaluation module is used to evaluate the uniformity of raw material mixing using a mixing uniformity index algorithm; the calculation formula is: Where xi is the weight percentage of the i-th sample, is the average weight percentage, n is the number of samples, and the blending uniformity index algorithm ensures the consistency of raw material blending, thereby improving the quality of the final product;

[0033] The impregnation time dynamic adjustment module is used to dynamically adjust the impregnation time by using a dynamic impregnation time control algorithm, combining the concentration of the palladium salt solution, the characteristics of the dry embryo module and the ambient temperature; the calculation formula is: t is the immersion time, k is the reaction rate constant, C is the concentration of the palladium salt solution, Ea is the activation energy, R is the gas constant, T is the absolute temperature, and m is the mass of the dry embryo module; the dynamic immersion time control algorithm ensures that the dry embryo module fully absorbs the solution and improves the loading efficiency of palladium metal;

[0034] The temperature control module adopts a temperature control algorithm to accurately control the temperature curve according to the requirements of the drying and calcination stages, T = f(t); where T is temperature, t is time, and f(t) is a temperature curve function designed according to the drying and calcination stages. The temperature control algorithm ensures that the temperature changes meet the requirements of catalyst preparation throughout the drying and calcination process.

[0035] The advantages of the present invention are:

[0036] High activity and selectivity: Through optimized formulation and preparation process, the catalyst can achieve efficient CO oxidation under low temperature conditions, significantly improving the catalytic efficiency.

[0037] Excellent stability: The honeycomb metal oxide composite carrier materials used, such as TiO2, WO3, V2O5, Al2O3 and SiO2, enable the catalyst to remain stable during long-term operation.

[0038] Strong anti-sulfur performance: By introducing specific metal oxides into the catalyst, such as tungsten can improve the thermal stability of the catalyst, titanium can improve the sulfur resistance, and the catalyst's tolerance to sulfur is enhanced, enabling it to remain active in a sulfur-containing environment and reducing the risk of sulfur poisoning.

[0039] Low-cost and high-efficiency preparation method: The palladium metal is loaded by an impregnation coating method, which simplifies the preparation process, reduces costs, and maintains the high efficiency of the catalyst.

[0040] Precise preparation control: By introducing the mixing uniformity index algorithm, dynamic impregnation time control algorithm and temperature control algorithm, the precise control of various parameters in the catalyst preparation process is ensured, improving the consistency and repeatability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the module structure of the device of the present invention. DETAILED DESCRIPTION

[0042] The present invention will be further described below in conjunction with specific embodiments, and the advantages and features of the present invention will become clearer as the description proceeds. However, these embodiments are exemplary only and do not constitute any limitation to the scope of the present invention. It should be understood by those skilled in the art that the details and forms of the technical solution of the present invention may be modified or replaced without departing from the spirit and scope of the present invention, but these modifications and replacements all fall within the scope of protection of the present invention.

[0043] Example 1: A metal-supported honeycomb CO oxidation catalyst carrier material, the carrier material comprising the following components in parts by weight: 80 parts of TiO2; 3 parts of WO3; 1 part of V2O5; 15 parts of Al2O3; and 5 parts of SiO2.

[0044] The present invention also relates to a method for preparing a metal-supported honeycomb CO oxidation catalyst support material, comprising the following steps:

[0045] (1) preparing an initial dry embryo module;

[0046] (2) soaking the initial dry embryo module in step (1) in a palladium salt solution;

[0047] (3) Drying and calcination activation are performed to obtain a honeycomb CO oxidation catalyst support material.

[0048] The TiO2, WO3, V2O5, Al2O3 and SiO2 components used are optimized in proportion, making the catalyst highly active in the process of CO oxidation and effectively improving the oxidation efficiency.

[0049] Through a special preparation process, including steps such as impregnation, drying and calcination activation, a close combination of palladium metal and the carrier material is ensured, thereby providing excellent thermal stability and sulfur resistance, and extending the service life of the catalyst.

[0050] The step (1) is specifically as follows:

[0051] (1-1) Raw material preparation: weigh the required TiO2, WO3, V2O5, Al2O3 and SiO2 raw materials, and mix them evenly to form a raw material mixture;

[0052] (1-2) Mixing and stirring: adding deionized water to the mixed raw materials, and stirring with a stirrer until a uniform slurry is formed; wherein the mass ratio of the deionized water to the raw material mixture is 1:2;

[0053] (1-3) pH adjustment: By adding an acid-base regulator, the pH value of the slurry is adjusted to 2 to promote the full reaction and gelation of the raw materials;

[0054] (1-4) Aging: The slurry with adjusted pH value is placed in a constant temperature environment for 24 hours to promote the formation of gel network;

[0055] (1-5) Filtration and molding: The aged slurry is filtered to remove excess impurities, and then extruded into the desired honeycomb shape using an extruder;

[0056] (1-6) Cutting and drying: The formed honeycomb modules are cut to obtain dry embryo modules of uniform size, and then dried to remove residual moisture.

[0057] The step (2) is specifically as follows:

[0058] (2-1) Preparation of palladium salt solution: prepare a palladium salt solution (such as palladium nitrate solution) with a mass percentage of 1-3%, and adjust its pH value to 2;

[0059] (2-2) Impregnation: The dried embryo module is immersed in a palladium salt solution, and the impregnation time is controlled to ensure that the embryo module fully absorbs the solution; after impregnation, the embryo module is taken out and the solution is drained; in the step (2-2), the impregnation time is 1 hour.

[0060] (2-3) Drying: Drying the dried embryo module after the first impregnation to remove residual moisture; in the step (2-3), the drying temperature range is 100° C. and the drying time is 5 hours.

[0061] The step (3) is specifically as follows:

[0062] (3-1) Final drying: The impregnated dry embryo module is finally dried at a temperature of 50° C. for 72 hours to ensure that moisture is completely removed;

[0063] (3-2) Calcination: The dried embryo module is calcined at a controlled temperature of 520° C. for 6 hours to promote the bonding of palladium metal with the support material and activate the catalyst;

[0064] (3-3) Cooling and inspection: After calcination, the dry embryo module is cooled naturally. The cooled module is inspected for physical and chemical properties to ensure that it meets the performance requirements of the catalyst.

[0065] The present invention also relates to a device for implementing a method for a metal-supported honeycomb CO oxidation catalyst support material, comprising:

[0066] The slurry mixing evaluation module 1 is used to evaluate the uniformity of raw material mixing using a mixing uniformity index algorithm; the calculation formula is: Where xi is the weight percentage of the i-th sample, is the average weight percentage, n is the number of samples, and the blending uniformity index algorithm ensures the consistency of raw material blending, thereby improving the quality of the final product;

[0067] The impregnation time dynamic adjustment module 2 is used to dynamically adjust the impregnation time by using a dynamic impregnation time control algorithm, combining the concentration of the palladium salt solution, the characteristics of the dry embryo module and the ambient temperature; the calculation formula is: t is the immersion time, k is the reaction rate constant, C is the concentration of the palladium salt solution, Ea is the activation energy, R is the gas constant, T is the absolute temperature, and m is the mass of the dry embryo module; the dynamic immersion time control algorithm ensures that the dry embryo module fully absorbs the solution and improves the loading efficiency of palladium metal;

[0068] The temperature control module 3 adopts a temperature control algorithm to accurately control the temperature curve according to the requirements of the drying and calcination stages, T = f(t); wherein T is temperature, t is time, and f(t) is a temperature curve function designed according to the drying and calcination stages. The temperature control algorithm ensures that the temperature changes meet the requirements of catalyst preparation during the entire drying and calcination process.

[0069] Example 2: A metal-supported honeycomb CO oxidation catalyst carrier material, the carrier material comprising the following components in parts by weight: 82 parts of TiO2; 5 parts of WO3; 3 parts of V2O5; 12 parts of Al2O3; and 8 parts of SiO2.

[0070] A method for preparing a metal-supported honeycomb CO oxidation catalyst support material comprises the following steps:

[0071] (1) preparing an initial dry embryo module;

[0072] (2) soaking the initial dry embryo module in step (1) in a palladium salt solution;

[0073] (3) Drying and calcination activation are performed to obtain a honeycomb CO oxidation catalyst support material.

[0074] The step (1) is specifically as follows:

[0075] (1-1) Raw material preparation: weigh the required TiO2, WO3, V2O5, Al2O3 and SiO2 raw materials, and mix them evenly to form a raw material mixture;

[0076] (1-2) Mixing and stirring: adding deionized water to the mixed raw materials, and stirring with a stirrer until a uniform slurry is formed; wherein the mass ratio of the deionized water to the raw material mixture is 1:3;

[0077] (1-3) pH adjustment: by adding an acid-base regulator, the pH value of the slurry is adjusted to 3 to promote the full reaction and gelation of the raw materials;

[0078] (1-4) Aging: The slurry with adjusted pH value is placed in a constant temperature environment for 24 hours to promote the formation of gel network;

[0079] (1-5) Filtration and molding: The aged slurry is filtered to remove excess impurities, and then extruded into the desired honeycomb shape using an extruder;

[0080] (1-6) Cutting and drying: The formed honeycomb modules are cut to obtain dry embryo modules of uniform size, and then dried to remove residual moisture.

[0081] The step (2) is specifically as follows:

[0082] (2-1) Preparation of palladium salt solution: prepare a 2% by mass palladium salt solution (such as palladium nitrate solution) and adjust its pH value to 3;

[0083] (2-2) Impregnation: Immersing the dried embryo module in a palladium salt solution, controlling the immersion time to ensure that the embryo module fully absorbs the solution; after impregnation, taking out the embryo module and draining the solution; (2-3) Drying: Drying the impregnated embryo module to remove residual moisture;

[0084] The step (3) is specifically as follows:

[0085] (3-1) Final drying: The impregnated dry embryo module is finally dried at a temperature of 55° C. for 100 hours to ensure that moisture is completely removed;

[0086] (3-2) Calcination: The dried embryo module is calcined at a controlled temperature of 540° C. for 7 hours to promote the bonding of palladium metal with the support material and activate the catalyst;

[0087] (3-3) Cooling and inspection: After calcination, the dry embryo module is cooled naturally. The cooled module is inspected for physical and chemical properties to ensure that it meets the performance requirements of the catalyst.

[0088] In the step (2-2), the immersion time is 2 hours.

[0089] In the step (2-3), the drying temperature range is 150° C. and the drying time is 15 hours.

[0090] Example 3: A metal-supported honeycomb CO oxidation catalyst carrier material, the carrier material comprising the following components in parts by weight: 85 parts of TiO2; 6 parts of WO3; 3 parts of V2O5; 15 parts of Al2O3; and 10 parts of SiO2.

[0091] A method for preparing a metal-supported honeycomb CO oxidation catalyst support material comprises the following steps:

[0092] (1) preparing an initial dry embryo module;

[0093] (2) soaking the initial dry embryo module in step (1) in a palladium salt solution;

[0094] (3) Drying and calcination activation are performed to obtain a honeycomb CO oxidation catalyst support material.

[0095] The step (1) is specifically as follows:

[0096] (1-1) Raw material preparation: weigh the required TiO2, WO3, V2O5, Al2O3 and SiO2 raw materials, and mix them evenly to form a raw material mixture;

[0097] (1-2) Mixing and stirring: adding deionized water to the mixed raw materials, and stirring with a stirrer until a uniform slurry is formed; wherein the mass ratio of the deionized water to the raw material mixture is 1:3;

[0098] (1-3) pH adjustment: By adding an acid-base regulator, the pH value of the slurry is adjusted to 4 to promote the full reaction and gelation of the raw materials;

[0099] (1-4) Aging: The slurry with adjusted pH value is placed in a constant temperature environment for 24 hours to promote the formation of gel network;

[0100] (1-5) Filtration and molding: The aged slurry is filtered to remove excess water, and then extruded into the desired honeycomb shape using an extruder;

[0101] (1-6) Cutting and drying: The formed honeycomb modules are cut to obtain dry embryo modules of uniform size, and then dried to remove residual moisture.

[0102] The step (2) is specifically as follows:

[0103] (2-1) Preparation of palladium salt solution: prepare a 3% by mass palladium salt solution (such as palladium nitrate solution) and adjust its pH value to 3;

[0104] (2-2) Impregnation: Immersing the dried embryo module in a palladium salt solution, controlling the immersion time to ensure that the embryo module fully absorbs the solution; after impregnation, taking out the embryo module and draining the solution; (2-3) Drying: Drying the impregnated embryo module to remove residual moisture;

[0105] The step (3) is specifically as follows:

[0106] (3-1) Final drying: The impregnated dry embryo module is finally dried at a temperature of 60° C. for 120 hours to ensure that moisture is completely removed;

[0107] (3-2) Calcination: The dried embryo module is calcined at a controlled temperature of 560° C. for 8 hours to promote the bonding of palladium metal with the support material and activate the catalyst;

[0108] (3-3) Cooling and inspection: After calcination, the dry embryo module is cooled naturally. The cooled module is inspected for physical and chemical properties to ensure that it meets the performance requirements of the catalyst.

[0109] In the step (2-2), the immersion time is 3 hours.

[0110] In the step (2-3), the drying temperature range is 200° C. and the drying time is 20 hours.

[0111] In the preparation and testing of the catalyst, the control group and the example group are set up to evaluate the effect of specific condition changes on the catalyst performance. The following is an example of the data of the control group and the example group for the palladium metal supported catalyst:

[0112] Control group (using traditional CO oxidation catalyst, CuO-CeO2 supported precious metal catalyst, as the control group):

[0113]

[0114]

[0115] It can be seen that the porosity is improved after optimization, which is beneficial to the mass transfer of reactants and the diffusion of products. Palladium metal dispersion: Through the improved impregnation and drying procedures, the palladium metal dispersion is increased to more than 25%, which enhances the activity and selectivity of the catalyst.

[0116] These data show that the performance of the catalyst can be significantly improved by adjusting the preparation parameters, such as the concentration of the impregnation solution, the drying temperature and time. The catalyst of the embodiment group exhibits a higher specific surface area and porosity, as well as better palladium metal dispersion, which are key factors in improving the efficiency of the catalyst. With these improvements, the catalyst achieves a higher reaction rate and a longer service life in practical applications.

[0117] At the same time, in the present invention, the consistency and uniformity of raw material mixing can be ensured by using the mixing uniformity index algorithm through the slurry mixing evaluation module 1. This precise mixing control helps to improve the quality and reproducibility of the catalyst and ensure that each batch of products meets high standards.

[0118] The impregnation time dynamic adjustment module 2 dynamically adjusts the impregnation time according to the concentration of the palladium salt solution, the characteristics of the dry embryo module and the ambient temperature. This dynamic adjustment ensures that the dry embryo module can fully absorb the solution, thereby improving the loading efficiency and uniformity of the palladium metal and optimizing the activity and stability of the catalyst.

[0119] The temperature control module 3 accurately controls the temperature curve according to the specific requirements of the drying and calcination stages. Through accurate temperature control, overheating or underheating can be avoided, ensuring that the physical and chemical properties of the catalyst are in the best state, and improving the performance and life of the catalyst.

[0120] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A metal-supported honeycomb CO oxidation catalyst carrier material, characterized in that: The carrier material comprises the following components in parts by weight: 80-85 parts of TiO2; 3-6 parts of WO3; 1-5 parts of V2O5; 10-15 parts of Al2O3; and 5-10 parts of SiO2.

2. The metal-supported honeycomb CO oxidation catalyst support material according to claim 1, characterized in that: The described TiO2 is 82 parts; WO3 is 5 parts; V2O5 is 3 parts; Al2O3 is 12 parts; SiO2 is 8 parts.

3. A method for preparing the metal-supported honeycomb CO oxidation catalyst support material according to claim 1 or 2, characterized in that: The following steps are involved: (1) Preparing initial dry embryo modules; (2) impregnating the initial dry embryo module in step (1) in a palladium salt solution; (3) Drying and calcination activation are performed to obtain a honeycomb CO oxidation catalyst support material.

4. The method according to claim 3, characterized in that The step (1) is specifically as follows: (1-1) Raw material preparation: weigh the required TiO2, WO3, V2O5, Al2O3 and SiO2 raw materials, and mix them evenly to form a raw material mixture; (1-2) Mixing and stirring: adding deionized water to the mixed raw materials, and stirring with a stirrer until a uniform slurry is formed; wherein the mass ratio of the deionized water to the raw material mixture is 1:2-3; (1-3) pH adjustment: By adding an acid-base regulator, the pH value of the slurry is adjusted to 2-4 to promote full reaction and gelation of the raw materials; (1-4) Aging: The slurry with adjusted pH value is placed in a constant temperature environment for 24 hours to promote the formation of the gel network; (1-5) Filtration and molding: The aged slurry is filtered to remove excess impurities, and then extruded into the desired honeycomb shape using an extruder; (1-6) Cutting and drying: The formed honeycomb modules are cut to obtain dry embryo modules of uniform size, and then dried to remove residual moisture.

5. The method according to claim 3, characterized in that: The step (2) is specifically as follows: (2-1) Preparation of palladium salt solution: prepare a palladium salt solution with a mass percentage of 1-3%, and adjust its pH value to 2-3; (2-2) Impregnation: The dried embryo module is immersed in a palladium salt solution, and the immersion time is controlled to ensure that the embryo module fully absorbs the solution; after the immersion, the embryo module is taken out and the solution is drained; (2-3) Drying: The impregnated dry embryo module is dried to remove residual moisture.

6. The method according to claim 3, characterized in that The step (3) is specifically as follows: (3-1) Final drying: The impregnated dry embryo modules are finally dried at a temperature of 50-60°C for 72-120 hours to ensure that moisture is completely removed; (3-2) Calcination: The dried embryo module is calcined at a controlled temperature of 520-560°C for 6-8 hours to promote the bonding of palladium metal with the carrier material and activate the catalyst; (3-3) Cooling and inspection: After calcination, the dry embryo module is cooled naturally. The cooled module is inspected for physical and chemical properties to ensure that it meets the performance requirements of the catalyst.

7. The method according to claim 5, characterized in that In the step (2-2), the immersion time is 1-3 hours.

8. The method according to claim 5, characterized in that In the step (2-3), the drying temperature ranges from 100 to 200° C. and the drying time is from 5 to 20 hours.

9. A device for implementing a method for a metal-supported honeycomb CO oxidation catalyst support material, characterized in that: include The slurry mixing evaluation module is used to evaluate the uniformity of raw material mixing using a mixing uniformity index algorithm; the calculation formula is: , where xi is the weight percentage of the i-th sample, is the average weight percentage, n is the number of samples, and the blending uniformity index algorithm ensures the consistency of raw material blending, thereby improving the quality of the final product; The impregnation time dynamic adjustment module is used to dynamically adjust the impregnation time by using a dynamic impregnation time control algorithm, combining the concentration of the palladium salt solution, the characteristics of the dry embryo module and the ambient temperature; the calculation formula is: ; t is the immersion time, k is the reaction rate constant, C is the concentration of the palladium salt solution, Ea is the activation energy, R is the gas constant, T is the absolute temperature, and m is the mass of the dry embryo module; the dynamic immersion time control algorithm ensures that the dry embryo module fully absorbs the solution and improves the loading efficiency of palladium metal; The temperature control module adopts a temperature control algorithm to accurately control the temperature curve according to the requirements of the drying and calcination stages, T=f(t); where T is temperature, t is time, and f(t) is a temperature curve function designed according to the drying and calcination stages. The temperature control algorithm ensures that the temperature changes meet the requirements of catalyst preparation throughout the drying and calcination process.

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