Catalyst material for degrading hydrogen peroxide working solution and preparation method of catalyst material
By synergistically designing Ce-Mn composite oxides and ZrO2-La2O3 promoters, the problems of insufficient catalyst activity and poor stability were solved, achieving efficient degradation of hydrogen peroxide working solution, which is suitable for industrial production.
Patent Information
- Application Number
- CN202511718751.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-21
- Publication Date
- 2026-02-17
AI Technical Summary
Existing catalysts exhibit insufficient catalytic activity, poor selectivity, and unsatisfactory stability during the degradation of hydrogen peroxide working solution. Furthermore, their preparation processes are cumbersome and cannot meet the requirements of continuous industrial production.
The catalyst was prepared by using Ce-Mn composite oxide as the main active component, combined with porous silica or diatomaceous earth particles as the support, and introducing ZrO2-La2O3 composite additive, through modification treatment, ultrasonic dispersion and microwave calcination, and the composition ratio and loading were optimized.
It significantly improves the catalytic efficiency and selectivity of the catalyst, extends its service life, simplifies the preparation process, is suitable for continuous industrial production, and reduces production costs.
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Abstract
Description
Technical Field
[0001] This invention relates to the field of catalyst materials, specifically to a catalyst material for the degradation of hydrogen peroxide working solution and its preparation method. Background Technology
[0002] Hydrogen peroxide, as an important chemical raw material, is widely used in chemical synthesis, environmental protection, and other fields. The anthraquinone process is currently the mainstream industrial process for producing hydrogen peroxide. In the anthraquinone process, the working solution needs to be recycled for a long time. However, degradation reactions occur during the reaction and separation stages, generating a series of byproducts. These byproducts reduce the activity of the working solution, leading to a decrease in hydrogen peroxide synthesis efficiency, affecting product purity, and increasing production energy consumption and costs.
[0003] To address the degradation problem of the working fluid, catalyst-mediated degradation product removal and working fluid regeneration technologies have become a key research focus. Existing catalysts for this scenario suffer from several drawbacks: some catalysts utilize only a single active component, resulting in limited catalytic activity, poor selectivity for degradation products, and easy destruction of effective anthraquinone components in the working fluid; insufficient compatibility between the catalyst support's structural characteristics and the active component leads to uneven dispersion of the active component and low mass transfer efficiency; a lack of targeted auxiliary active component design results in poor catalyst stability and easy deactivation after long-term use; many preparation processes involve cumbersome steps and harsh reaction conditions, making it difficult to meet the needs of continuous industrial production; and some process parameters are not reasonably limited, leading to poor consistency in catalyst product performance and unstable application effects.
[0004] To address the shortcomings of the existing technologies, there is an urgent need to develop a catalyst material for the degradation of hydrogen peroxide working fluid that has a reasonable component design, high catalytic efficiency, strong stability, and simple preparation process, as well as a corresponding efficient preparation method, so as to achieve efficient regeneration of the working fluid and ensure the continuity and economy of hydrogen peroxide production. Summary of the Invention
[0005] In view of the technical problems existing in the prior art, the present invention provides a catalyst material for the degradation of hydrogen peroxide working solution and its preparation method.
[0006] A catalyst material for the degradation of hydrogen peroxide working solution and its preparation method are disclosed, employing the following technical solution: In the first aspect, this application discloses a catalyst material for the degradation of hydrogen peroxide working solution, which adopts the following technical solution: A catalyst material for the degradation of hydrogen peroxide working solution includes a catalyst support and a Ce-Mn composite oxide adsorbed on the surface of the catalyst support, wherein the molar ratio of Ce to Mn in the Ce-Mn composite oxide is 1:2 to 1:5.
[0007] Through the above technical solution, this application defines the core composition of the catalyst material for the degradation of hydrogen peroxide working fluid, explicitly using a Ce-Mn composite oxide as the active component and defining the molar ratio range of Ce to Mn. Existing catalysts commonly used for working fluid degradation often employ a single metal oxide as the active component, resulting in insufficient catalytic activity and poor selectivity for degradation products. Ce possesses excellent redox properties, while Mn has good catalytic active centers. When the two form a composite oxide, they can significantly improve catalytic reaction efficiency through synergistic effects such as electron transfer and lattice defect regulation, while simultaneously enhancing the targeted recognition ability of specific degradation products in the working fluid and avoiding the destruction of effective anthraquinone components.
[0008] Furthermore, the specific surface area of the catalyst support is ≥800 m². 2 / g, with a pore size of 2~5nm, the catalyst support includes at least one of porous silica particles or porous diatomaceous earth particles.
[0009] Through the above technical solutions, this application further defines the catalyst support, clarifying its specific surface area, pore size characteristics, and specific types. As the foundation for carrying the active components, the structural characteristics of the support directly affect the loading effect of the active components and the mass transfer efficiency of the catalytic reaction. A larger specific surface area provides sufficient loading sites for Ce-Mn composite oxides, ensuring uniform dispersion of the active components; a specific pore size range is compatible with the molecular size of the degradation products in the working solution, facilitating rapid diffusion of degradation products to the active centers, while reducing the adsorption and retention of effective anthraquinone components within the support pores, thus improving reaction selectivity. The selection of porous silica particles and porous diatomaceous earth particles considers both the structural compatibility of the materials and the economic efficiency and availability for industrial applications. Both possess good chemical stability, do not react adversely with the working solution, and are easy to modify subsequently.
[0010] Furthermore, the catalyst support is also loaded with an auxiliary active component, which is a ZrO2-La2O3 composite additive, wherein the molar ratio of ZrO2 to La2O3 in the ZrO2-La2O3 composite additive is 3-5:1.
[0011] Through the above technical solution, this application constructs a synergistic catalytic system of main active component and auxiliary active component: ZrO2 has good structural stability and electronic conductivity, which can enhance the structural stability of the main active component and inhibit its aggregation and loss; La2O3 can adjust the surface acidity and alkalinity of the catalyst, optimize the microenvironment of the catalytic reaction, and improve the catalytic selectivity for degradation products. The two form a composite promoter in a specific molar ratio, achieving complementary advantages and producing a synergistic effect with Ce-Mn composite oxides, thereby improving catalytic efficiency and extending catalyst lifespan. The limited molar ratio range is based on the results of extensive experimental verification; within this ratio range, the structure and performance of the composite promoter are optimal. If the ratio is unbalanced, it may lead to a weakening of the auxiliary effect or even affect the catalytic effect of the main active component. By introducing auxiliary active components and optimizing their ratio, this application solves the technical pain points of insufficient stability and selectivity of existing catalysts, significantly improves the inventiveness of the solution, and expands the technical protection dimensions of the catalyst.
[0012] Furthermore, the loading of the Ce-Mn composite oxide is 25-30% of the total mass of the catalyst.
[0013] Through the above technical solution, this application clearly defines the loading amount of Ce-Mn composite oxide. The loading amount, as a key parameter in catalyst preparation, directly affects the balance between catalytic activity, material cost, and service life. This application optimizes the loading ratio to ensure the formation of sufficient and uniformly dispersed active centers on the catalyst surface, meeting the catalytic activity requirements of the working fluid degradation reaction while avoiding agglomeration problems and cost waste caused by excessive loading.
[0014] Furthermore, the loading of the ZrO2-La2O3 composite additive is 6-8% of the total mass of the catalyst.
[0015] Through the above technical solution, this application specifies the loading amount of the ZrO2-La2O3 composite additive. A loading amount within this range ensures that the composite additive is uniformly dispersed on the support surface, and the Ce-Mn composite oxide forms a synergistic effect, enhancing both the stability and selectivity of the main active component without affecting the exposure of the main active center due to excessive loading. From a technical perspective, the loading amount of auxiliary components needs to be controlled within the range of "effective assistance" to avoid them becoming obstacles to the catalytic reaction. This claim further improves the composition ratio of the catalyst by optimizing the loading parameters of the auxiliary active component, solving the technical problem of unreasonable design of the loading amount of existing auxiliary components.
[0016] Secondly, this application provides a method for preparing a catalyst material for the degradation of hydrogen peroxide working solution, employing the following technical solution: A method for preparing a catalyst material for the degradation of hydrogen peroxide working solution includes the following preparation steps: The catalyst support was placed in a silane coupling agent-ethanol solution, stirred and mixed, and then dried to obtain the modified catalyst support. Cerium nitrate and manganese nitrate were mixed with deionized water, and then a modified catalyst support was added and ultrasonically dispersed. Ammonia was added dropwise to adjust the pH to 8-9. After standing, the mixture was filtered. The filtered material was then placed in a mixed solution of zirconium nitrate and lanthanum nitrate, stirred, and filtered to obtain the precursor. The precursor is placed in a microwave reactor, calcined at 400-500℃, cooled, and then pulverized to a particle size of 50-100μm to prepare a catalyst material for the degradation of hydrogen peroxide working solution.
[0017] Through the above technical solution, this application discloses a method for preparing catalyst materials, clarifying key steps such as support modification, active component loading, and microwave calcination. First, treatment of the support with a silane coupling agent-ethanol solution improves the chemical properties of the support surface, enhances the interaction between the support and the active component, improves loading stability, and prevents the loss of active components during use. Second, ultrasonic dispersion promotes uniform dispersion of the active component on the support surface, reduces agglomeration, and improves the utilization rate of catalytic active centers. Finally, microwave calcination, compared to traditional calcination, features uniform heating, high efficiency, and low energy consumption, enabling rapid formation of a stable composite oxide structure while avoiding support structure damage caused by prolonged high-temperature calcination. The entire preparation process is clear, with mild conditions, requiring no complex equipment, and is suitable for large-scale industrial production.
[0018] Furthermore, the concentration of the ammonia water is 1~2 mol / L.
[0019] Through the above technical solution, this application specifies the concentration of ammonia water used in the preparation process. Ammonia water is mainly used in the preparation process to adjust the pH value of the reaction system, promoting the formation of hydroxide precipitates from metal salts such as cerium nitrate and manganese nitrate, which are then loaded onto the carrier surface. Some existing preparation methods do not specify the ammonia water concentration, leading to unstable pH adjustment effects. The ammonia water concentration range specified in this claim enables precise and stable pH adjustment, allowing metal ions to slowly and uniformly precipitate on the carrier surface, forming well-dispersed precipitates, laying the foundation for subsequent calcination to form highly active composite oxides. Simultaneously, ammonia water within this concentration range is easily obtained and controlled in industrial production, ensuring high operational safety and improving the repeatability and stability of the preparation process.
[0020] Furthermore, the concentration of the mixed solution of zirconium nitrate and lanthanum nitrate is 0.5~1 mol / L.
[0021] In summary, this application has the following beneficial effects: First, a catalytic system for targeting and recognizing degradation products in the working fluid was constructed through the synergistic design of Ce-Mn composite oxides as the main active component, combined with the optimized adaptation of targeted auxiliary active components and high-performance supports. The redox properties of Ce complement the catalytic active centers of Mn. The auxiliary components further enhance the catalytic conversion ability of degradation products by adjusting the surface properties and micro-reaction environment of the catalyst, while avoiding damage to the effective anthraquinone components in the working fluid. The specific structural characteristics of the support ensure uniform dispersion and efficient mass transfer of the active components, enabling degradation products to quickly contact the active centers and react. This achieves precise removal of degradation products from the working fluid and efficient recovery of the working fluid's activity, significantly improving the continuity of hydrogen peroxide production and the stability of product quality.
[0022] Secondly, through multi-dimensional structural and component design, the long-term stability of the catalyst is significantly improved. After modification, the interaction between the support and the active component is enhanced, effectively inhibiting the aggregation and loss of the active component. The introduction of auxiliary active components optimizes the crystal structure and surface chemical properties of the catalyst, preventing structural collapse and deactivation of the catalytic active centers during long-term reactions. The combination of ultrasonic dispersion and microwave calcination in the preparation process further enhances the bonding strength between the active component and the support, ensuring stable catalytic performance during continuous operation. Simultaneously, the catalyst regeneration process is simple, and catalytic activity can be quickly restored after regeneration, eliminating the need for frequent catalyst replacement. This reduces consumable costs and downtime losses during production, meeting the stringent requirements of continuous industrial production. Detailed Implementation
[0023] The present application will be further described in detail below with reference to the embodiments.
[0024] Example 1 A catalyst material for the degradation of hydrogen peroxide working solution includes a catalyst support and Ce-Mn composite oxide adsorbed on the surface of the catalyst support.
[0025] A catalyst material for the degradation of hydrogen peroxide working solution is prepared using the following technical solution: Specific surface area ≥800m² 2 / g, mesoporous SiO2 with a pore size of 2~5nm was placed in a 5% aminopropyltriethoxysilane ethanol solution, stirred at 60℃ for 2h, filtered and dried for later use to prepare the modified catalyst support. Take 20g of cerium nitrate and 60g of manganese nitrate, add 500mL of deionized water, and stir until completely dissolved; add 100g of modified catalyst support, and ultrasonically disperse for 200min at 300W power; add 1mol / L ammonia water dropwise at a rate of 1mL / min to adjust the pH of the system to 8, let stand for 6h, and then filter to obtain the precursor.
[0026] The precursor is placed in a microwave reactor and calcined at 500W and 400℃ for 1 hour. After naturally cooling to room temperature, it is pulverized to a particle size of 50μm to prepare the catalyst material for the degradation of hydrogen peroxide working solution.
[0027] Example 2 A catalyst material for the degradation of hydrogen peroxide working solution includes a catalyst support and Ce-Mn composite oxide adsorbed on the surface of the catalyst support.
[0028] A catalyst material for the degradation of hydrogen peroxide working solution is prepared using the following technical solution: Specific surface area ≥800m² 2 / g, mesoporous SiO2 with a pore size of 2~5nm was placed in a 5% aminopropyltriethoxysilane ethanol solution, stirred at 60℃ for 2h, filtered and dried for later use to prepare the modified catalyst support. Take 35g of cerium nitrate and 130g of manganese nitrate, add 750mL of deionized water, and stir until completely dissolved; add 200g of modified catalyst support, and ultrasonically disperse for 30min at 400W power; add 1mol / L ammonia water dropwise at a rate of 2mL / min to adjust the pH of the system to 8, and filter after standing for 9h to obtain the precursor.
[0029] The precursor is placed in a microwave reactor and calcined at 650W and 450℃ for 2 hours. After naturally cooling to room temperature, it is pulverized to a particle size of 7μm to prepare the catalyst material for the degradation of hydrogen peroxide working solution.
[0030] Example 3 A catalyst material for the degradation of hydrogen peroxide working solution includes a catalyst support and Ce-Mn composite oxide adsorbed on the surface of the catalyst support.
[0031] A catalyst material for the degradation of hydrogen peroxide working solution is prepared using the following technical solution: Specific surface area ≥800m² 2 / g, mesoporous SiO2 with a pore size of 2~5nm was placed in a 5% aminopropyltriethoxysilane ethanol solution, stirred at 60℃ for 2h, filtered and dried for later use to prepare the modified catalyst support. Take 50g of cerium nitrate and 200g of manganese nitrate, add 1000mL of deionized water, and stir until completely dissolved; add 300g of modified catalyst support, and ultrasonically disperse for 40min at 500W power; add 2mol / L ammonia water dropwise at a rate of 3mL / min to adjust the pH of the system to 9, let stand for 12h, and then filter to obtain the precursor.
[0032] The precursor is placed in a microwave reactor and calcined at 800W and 500℃ for 3 hours. After naturally cooling to room temperature, it is pulverized to a particle size of 100μm to prepare the catalyst material for the degradation of hydrogen peroxide working solution.
[0033] Example 4 A catalyst material for the degradation of hydrogen peroxide working solution includes a catalyst support and Ce-Mn composite oxide adsorbed on the surface of the catalyst support.
[0034] A catalyst material for the degradation of hydrogen peroxide working solution is prepared using the following technical solution: Specific surface area ≥800m² 2 / g, mesoporous SiO2 with a pore size of 2~5nm was placed in a 5% aminopropyltriethoxysilane ethanol solution, stirred at 60℃ for 2h, filtered and dried for later use to prepare the modified catalyst support. Take 35g of cerium nitrate and 130g of manganese nitrate, add 750mL of deionized water, and stir until completely dissolved; add 200g of modified catalyst support, and ultrasonically disperse for 30min at 400W power; add 1mol / L ammonia water dropwise at a rate of 2mL / min to adjust the pH of the system to 8, let stand for 9h, and then filter. The filtered material was placed in a mixed solution of zirconium nitrate and lanthanum nitrate, wherein 10 g of zirconium nitrate and 3 g of lanthanum nitrate were dissolved in 200 mL of deionized water to prepare a solution with a concentration of 0.5 mol / L. The solution was stirred at 200 r / min for 1 h and then filtered to obtain the precursor.
[0035] The precursor is placed in a microwave reactor and calcined at 500W and 400℃ for 1 hour. After naturally cooling to room temperature, it is pulverized to a particle size of 50μm to prepare the catalyst material for the degradation of hydrogen peroxide working solution.
[0036] Example 5 A catalyst material for the degradation of hydrogen peroxide working solution includes a catalyst support and Ce-Mn composite oxide adsorbed on the surface of the catalyst support.
[0037] A catalyst material for the degradation of hydrogen peroxide working solution is prepared using the following technical solution: Specific surface area ≥800m² 2 / g, mesoporous SiO2 with a pore size of 2~5nm was placed in a 5% aminopropyltriethoxysilane ethanol solution, stirred at 60℃ for 2h, filtered and dried for later use to prepare the modified catalyst support. Take 35g of cerium nitrate and 130g of manganese nitrate, add 750mL of deionized water, and stir until completely dissolved; add 200g of modified catalyst support, and ultrasonically disperse for 30min at 400W power; add 1mol / L ammonia water dropwise at a rate of 2mL / min to adjust the pH of the system to 8, let stand for 9h, and then filter. The filtered material was placed in a mixed solution of zirconium nitrate and lanthanum nitrate, wherein 20 g of zirconium nitrate and 6 g of lanthanum nitrate were dissolved in 350 mL of deionized water to prepare a solution with a concentration of 0.7 mol / L. The solution was stirred at 300 r / min for 1 h and then filtered to obtain the precursor.
[0038] The precursor is placed in a microwave reactor and calcined at 650W and 450℃ for 2 hours. After naturally cooling to room temperature, it is pulverized to a particle size of 75μm to prepare the catalyst material for the degradation of hydrogen peroxide working solution.
[0039] Example 6 A catalyst material for the degradation of hydrogen peroxide working solution includes a catalyst support and Ce-Mn composite oxide adsorbed on the surface of the catalyst support.
[0040] A catalyst material for the degradation of hydrogen peroxide working solution is prepared using the following technical solution: Specific surface area ≥800m² 2 / g, mesoporous SiO2 with a pore size of 2~5nm was placed in a 5% aminopropyltriethoxysilane ethanol solution, stirred at 60℃ for 2h, filtered and dried for later use to prepare the modified catalyst support. Take 35g of cerium nitrate and 130g of manganese nitrate, add 750mL of deionized water, and stir until completely dissolved; add 200g of modified catalyst support, and ultrasonically disperse for 30min at 400W power; add 1mol / L ammonia water dropwise at a rate of 2mL / min to adjust the pH of the system to 8, let stand for 9h, and then filter. The filtered material was placed in a mixed solution of zirconium nitrate and lanthanum nitrate, wherein 30 g of zirconium nitrate and 310 g of lanthanum nitrate were dissolved in 500 mL of deionized water to prepare a solution with a concentration of 1 mol / L. The solution was stirred at 400 r / min for 2 h and then filtered to obtain the precursor.
[0041] The precursor is placed in a microwave reactor and calcined at 800W and 500℃ for 3 hours. After naturally cooling to room temperature, it is pulverized to a particle size of 100μm to prepare the catalyst material for the degradation of hydrogen peroxide working solution.
[0042] Comparative Example 1 Compared with Example 1, Comparative Example 1 used a specific surface area ≥800m². 2 / g, mesoporous SiO2 with a pore size of 2~5nm is directly used as a catalyst material.
[0043] Performance testing Hydrogen peroxide working solution parameters: The anthraquinone-based hydrogen peroxide production line used in the test was a working fluid awaiting regeneration after 1000 hours of continuous circulation. Its specific components and contents are as follows: total effective anthraquinone content (2-ethylanthraquinone + tetrahydro-2-ethylanthraquinone) 112.8 g / L; carboxylic acid degradation products 7.5 g / L; hydroxyanthraquinone degradation products 3.2 g / L; solvent system: heavy aromatics (C9-C11) and trioctyl phosphate; moisture content (mass fraction) 0.35%; density (25℃): 0.91 g / cm³. 3 Viscosity (25℃): 4.2 mPa・s.
[0044] Detection method: Degradation product removal rate: The total content of carboxylic acid and hydroxyanthraquinone degradation products in the working solution before and after the reaction was determined by high performance liquid chromatography (HPLC), and the removal rate was calculated. Retention rate of effective anthraquinones: The total content of effective anthraquinones in the working solution before and after the reaction was determined by HPLC, and the retention rate was calculated. Catalyst activity retention rate: The ratio of the degradation product removal rate after 1000 h of reaction to the initial removal rate is used as the activity retention rate to evaluate the catalyst stability.
[0045] The results are shown in Table 1 below: Table 1 Performance Test Table
[0046] By comparing the test results of Examples 1-3 and Comparative Example 1 with those in Table 1, it can be found that: Based on the technical solutions of Examples 1-3 and Comparative Example 1, this application defines the core composition of the catalyst material for the degradation of hydrogen peroxide working fluid, explicitly using a Ce-Mn composite oxide as the active component and defining the molar ratio range of Ce to Mn. Existing catalysts commonly used for working fluid degradation often employ a single metal oxide as the active component, resulting in insufficient catalytic activity and poor selectivity for degradation products. Ce possesses excellent redox properties, while Mn has good catalytic active centers. When the two form a composite oxide, they can significantly improve catalytic reaction efficiency through synergistic effects such as electron transfer and lattice defect regulation, while simultaneously enhancing the targeted recognition ability of specific degradation products in the working fluid and avoiding the destruction of effective anthraquinone components.
[0047] By comparing Examples 4-6 with Examples 1-3, this application further illustrates the synergistic catalytic system of main active component and auxiliary active component constructed in this application: ZrO2 possesses good structural stability and electronic conductivity, which can enhance the structural stability of the main active component and inhibit its aggregation and loss; La2O3 can adjust the surface acidity and alkalinity of the catalyst, optimize the microenvironment of the catalytic reaction, and improve the catalytic selectivity for degradation products. The two components, in a specific molar ratio, form a composite promoter, achieving complementary advantages and producing a synergistic effect with Ce-Mn composite oxides, thereby improving catalytic efficiency and extending catalyst lifespan. The limitation of the molar ratio range is based on the results of extensive experimental verification; within this ratio range, the structure and performance of the composite promoter are optimal. If the ratio is unbalanced, it may lead to a weakening of the auxiliary effect or even affect the catalytic effect of the main active component. This application, by introducing auxiliary active components and optimizing their ratio, solves the technical pain points of insufficient stability and selectivity of existing catalysts, significantly improves the creativity of the solution, and expands the technical protection dimension of the catalyst.
[0048] The present invention has been described in detail above with reference to specific embodiments and exemplary examples; however, these descriptions should not be construed as limiting the present invention. Those skilled in the art will understand that various equivalent substitutions, modifications, or improvements can be made to the technical solutions and embodiments of the present invention without departing from the spirit and scope of the invention, and all such modifications and improvements fall within the scope of the present invention. The scope of protection of the present invention is defined by the appended claims.
[0049] All publications, patent applications, patents, and other references mentioned in this specification are incorporated herein by reference. Unless otherwise defined, all technical and scientific terms used in this specification have the meanings commonly understood by those skilled in the art. In case of conflict, the definitions in this specification shall prevail.
[0050] When this specification uses the prefixes “known to those skilled in the art,” “prior art,” or similar terms to derive materials, substances, methods, steps, apparatus, or components, the objects derived from such prefixes cover those commonly used in the art at the time of this application, but also include those that are not currently commonly used but will become generally recognized in the art as suitable for similar purposes.
[0051] In the context of this specification, except where expressly stated otherwise, any matters or issues not mentioned shall apply directly to those known in the art without any modification.
Claims
1. A catalyst material for degrading hydrogen peroxide working solution, characterized by, The catalyst carrier is loaded with a Ce-Mn composite oxide, and the molar ratio of Ce to Mn in the Ce-Mn composite oxide is 1:2-1:
5.
2. The catalyst material for degrading hydrogen peroxide working solution according to claim 1, characterized in that, The specific surface area of the catalyst carrier is ≥ 800 m 2 / g, and the pore size is 2-5 nm, and the catalyst carrier comprises at least one of porous silica particles or porous diatomite particles.
3. The catalyst material for degrading hydrogen peroxide working solution according to claim 1, characterized in that, The catalyst carrier is further loaded with an auxiliary active component, which is a ZrO2-La2O3 composite auxiliary agent, and the molar ratio of ZrO2 to La2O3 in the ZrO2-La2O3 composite auxiliary agent is 3-5:
1.
4. The catalyst material for degrading hydrogen peroxide working solution according to claim 1, characterized in that, The loading amount of the Ce-Mn composite oxide is 25-30% of the total mass of the catalyst.
5. The catalyst material for degrading hydrogen peroxide working solution according to claim 3, characterized in that, The loading amount of the ZrO2-La2O3 composite auxiliary agent is 6-8% of the total mass of the catalyst.
6. A method for preparing a catalyst material for the degradation of hydrogen peroxide working solution according to any one of claims 1-5, characterized in that, The catalyst carrier is placed in a silane coupling agent-ethanol solution, stirred and mixed, and then dried to obtain a modified catalyst carrier. The cerium nitrate and manganese nitrate are stirred and mixed with deionized water, then the modified catalyst carrier is added and ultrasonic dispersion treatment is performed, ammonia water is added dropwise to adjust the pH to 8-9, and then the mixture is filtered after standing, and the filtered material is placed in a mixed solution of zirconium nitrate and lanthanum nitrate, stirred and filtered to obtain a precursor. The precursor is placed in a microwave reactor and calcined at 400-500 DEG C, then cooled and crushed to a particle size of 50-100 mu m to obtain the catalyst material for hydrogen peroxide working solution degradation. The concentration of the ammonia water is 1-2 mol / L.
7. The method for preparing a catalyst material for the degradation of hydrogen peroxide working solution according to claim 6, characterized in that, The concentration of the mixed solution of zirconium nitrate and lanthanum nitrate is 0.5-1 mol / L.
8. The method for preparing a catalyst material for the degradation of hydrogen peroxide working solution according to claim 6, characterized in that,