Normal-temperature efficient deoxidation catalyst as well as preparation method and application thereof
By using a catalyst composed of modified mesoporous silica support and copper manganese lanthanum cerium oxide, the problems of low deoxygenation efficiency and poor stability at room temperature were solved, achieving a high-efficiency and low-cost deoxygenation effect suitable for industrial applications.
Patent Information
- Application Number
- CN202511655613.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-12
- Publication Date
- 2026-03-03
AI Technical Summary
Existing room-temperature deoxygenation catalysts suffer from low deoxygenation efficiency, poor stability, and high cost. In particular, precious metal catalysts are expensive, while non-precious metal catalysts are inefficient and easily poisoned by impurities, which affects their industrial applications.
A highly efficient deoxygenation catalyst was formed by using modified mesoporous silica as a support, copper oxide and manganese oxide as active components, and lanthanum oxide and cerium oxide as promoters, and by adjusting the component ratio and preparation process of the catalyst.
The oxygen removal rate reaches 99.9% at room temperature. The catalyst has good stability, long service life, and reduced preparation costs, making it suitable for industrial production.
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Abstract
Description
Technical Field
[0001] This invention belongs to the field of catalyst technology, specifically relating to a room-temperature high-efficiency deoxygenation catalyst, its preparation method, and its application. Background Technology
[0002] In numerous industrial sectors such as chemical engineering, food packaging, and electronics, deoxygenation of gases or liquids is a crucial step. Currently, existing room-temperature deoxygenation catalysts face several unresolved issues in practical applications. For example, some catalysts with precious metals (such as platinum and palladium) as active components, while possessing some deoxygenation capabilities, suffer from extremely high production costs due to the scarcity and high price of these metals, severely limiting their widespread application in large-scale industrial production. Other non-precious metal catalysts, such as iron-based and copper-based catalysts, while relatively inexpensive, generally exhibit low deoxygenation efficiency, failing to reduce oxygen content to the required level quickly enough. They also suffer from poor selectivity, potentially adversely affecting the target substance. Furthermore, some existing catalysts are prone to active component aggregation and impurity poisoning after prolonged use, leading to a significant decrease in catalyst stability and a weakening of deoxygenation effects. This necessitates frequent catalyst replacements, increasing production costs and impacting production efficiency.
[0003] Therefore, developing a high-efficiency deoxygenation catalyst with high deoxygenation efficiency, good stability, and low cost at room temperature is of great practical significance. Summary of the Invention
[0004] To overcome the shortcomings of the prior art, the present invention aims to provide a high-efficiency room-temperature deoxygenation catalyst, its preparation method, and its applications, thereby solving the problems of low deoxygenation efficiency, poor stability, and high cost of existing room-temperature deoxygenation catalysts. Simultaneously, the present invention provides a preparation method for this catalyst, enabling industrial-scale production, and provides applications of this catalyst in the field of deoxygenation, expanding its scope of use.
[0005] To achieve the above objectives, the present invention employs the following technical solution: This invention provides a room-temperature high-efficiency deoxygenation catalyst, comprising, by mass percentage, 70%-85% of a support, 10%-20% of an active component, and 5%-15% of an additive; the support is modified mesoporous silica; the active component is a mixture of copper oxide and manganese oxide, with a mass ratio of copper oxide to manganese oxide of 1:(0.8-1.2); the additive is a mixture of lanthanum oxide and cerium oxide, with a mass ratio of lanthanum oxide to cerium oxide of 1:(1.5-2.5).
[0006] In one embodiment, the preparation process of the modified mesoporous silica is as follows: Mesoporous silica was placed in a 5%-10% nitric acid solution and refluxed and stirred at 60-80℃ for 2-4 hours. After filtration, it was washed with deionized water until neutral and dried at 105-110℃ for 8-12 hours. Subsequently, it was calcined at 400-500℃ for 2-3 hours under a nitrogen atmosphere to obtain modified mesoporous silica.
[0007] In one embodiment, the modified mesoporous silica has a specific surface area of 800 m². 2 / g-1200 m 2 / g, pore size is 2 nm-5 nm, particle size is 80-120 mesh.
[0008] In one embodiment, the mass ratio of copper oxide to manganese oxide in the active component is 1:1; and the mass ratio of lanthanum oxide to cerium oxide in the auxiliary agent is 1:2.
[0009] This invention also provides a method for preparing a high-efficiency deoxygenation catalyst at room temperature, comprising the following steps: Copper and manganese sources were dissolved in deionized water and stirred until completely dissolved to obtain an active component precursor solution; lanthanum and cerium sources were dissolved in deionized water and stirred until completely dissolved to obtain an auxiliary agent precursor solution. Modified mesoporous silica was added to the active component precursor solution for the first stirring and impregnation, and then the auxiliary agent precursor solution was added for the second stirring and impregnation to obtain the loaded mixture. The loaded mixture was sequentially filtered, washed, dried, calcined, and cooled to obtain a high-efficiency deoxygenation catalyst at room temperature.
[0010] In one embodiment, the mass ratio of the copper source to the manganese source is 1:(0.8-1.2); the copper source is at least one of copper nitrate and copper chloride, and the manganese source is at least one of manganese nitrate and manganese chloride; the mass ratio of the lanthanum source to the cerium source is 1:(1.5-2.5); the lanthanum source is at least one of lanthanum nitrate and lanthanum chloride, and the cerium source is at least one of cerium nitrate and cerium chloride.
[0011] In one embodiment, the mass ratio of the sum of the active component precursor solution and the auxiliary agent precursor solution to the modified mesoporous silica is 6:1.
[0012] In one embodiment, the first stirring and impregnation time is 6 hours and the temperature is 30°C; the second stirring and impregnation time is 3 hours; the drying temperature is 80°C to 120°C and the drying time is 12 hours to 24 hours; the calcination treatment temperature is 300°C to 500°C and the calcination treatment temperature is 4 hours to 6 hours.
[0013] This invention also provides the application of the above-described high-efficiency deoxygenation catalyst at room temperature in the deoxygenation process.
[0014] Compared with the prior art, the present invention has the following beneficial effects: This invention provides a high-efficiency deoxygenation catalyst at room temperature. When an oxygen-containing gas or liquid passes through this catalyst at room temperature, the oxygen is first adsorbed onto the catalyst surface. The active components, copper oxide and manganese oxide, undergo a redox reaction with the oxygen, converting it into oxygen ions while simultaneously being oxidized themselves. The auxiliary agents, lanthanum oxide and cerium oxide, possess excellent oxygen storage and release capabilities, adjusting the oxygen concentration on the catalyst surface and improving the catalyst's deoxygenation activity and stability. The modified support, mesoporous silica, has a large specific surface area and uniform pore size, providing a good dispersion support for the active components and auxiliary agents, increasing the contact area between the catalyst and reactants, thereby improving deoxygenation efficiency. This deoxygenation catalyst exhibits high deoxygenation efficiency; at room temperature, it can remove over 99.9% of oxygen, rapidly reducing the oxygen content to extremely low levels to meet the deoxygenation requirements of various industrial fields. Furthermore, this deoxygenation catalyst demonstrates good stability; the active components are not prone to aggregation or poisoning during prolonged use, maintaining high deoxygenation activity, resulting in a long service life, reduced catalyst replacement frequency, and lower production costs. Furthermore, this catalyst does not use precious metals as active ingredients, resulting in low costs. It mainly uses relatively inexpensive metal oxides such as copper oxide and manganese oxide, which greatly reduces the preparation cost of the catalyst and has good economic benefits.
[0015] The present invention also provides a simple method for preparing a room-temperature high-efficiency deoxygenation catalyst, which does not require complex equipment and processes, is easy to operate, and is easy to industrialize. Detailed Implementation
[0016] To enable those skilled in the art to understand the features and effects of the present invention, the terms and expressions used in the specification and claims are explained and defined in general below. Unless otherwise specified, all technical and scientific terms used herein have the ordinary meaning understood by those skilled in the art regarding the present invention, and in case of conflict, the definitions in this specification shall prevail.
[0017] The theories or mechanisms described and disclosed herein, whether right or wrong, should not in any way limit the scope of the invention, that is, the contents of the invention can be implemented without being limited by any particular theory or mechanism.
[0018] In this document, all features defined by numerical ranges or percentage ranges, such as numerical values, quantities, contents, and concentrations, are for the sake of brevity and convenience only. Accordingly, descriptions of numerical ranges or percentage ranges should be considered as covering and specifically disclosing all possible sub-ranges and individual numerical values (including integers and fractions) within those ranges.
[0019] In this article, unless otherwise specified, “contains,” “includes,” “containing,” “has,” or similar terms cover the meanings of “composed of” and “mainly composed of,” for example, “A contains a” covers the meanings of “A contains a and others” and “A contains only a.”
[0020] For the sake of brevity, not all possible combinations of the technical features in each implementation scheme or embodiment are described herein. Therefore, as long as there is no contradiction in the combination of these technical features, the technical features in each implementation scheme or embodiment can be combined arbitrarily, and all possible combinations should be considered within the scope of this specification.
[0021] The present invention provides a room-temperature high-efficiency deoxygenation catalyst, which is composed of active ingredients, additives and a support.
[0022] Based on the total mass of the catalyst being 100%, the mass fraction of the support is 70%-85%, the mass fraction of the active component is 10%-20%, and the mass fraction of the auxiliary agent is 5%-15%.
[0023] The active ingredient is a mixture of copper oxide and manganese oxide, with a mass ratio of copper oxide to manganese oxide of 1:(0.8-1.2); the auxiliary agent is a mixture of lanthanum oxide and cerium oxide, with a mass ratio of lanthanum oxide to cerium oxide of 1:(1.5-2.5); and the carrier is modified mesoporous silica with a specific surface area of 800 m². 2 / g-1200 m 2 / g, pore size is 2 nm-5 nm, particle size is 80-120 mesh.
[0024] The preparation process of the above-mentioned modified mesoporous silica is as follows: Mesoporous silica was placed in a 5%-10% nitric acid solution and refluxed and stirred at 60-80℃ for 2-4 hours. After filtration, it was washed with deionized water until neutral and dried at 105-110℃ for 8-12 hours. Subsequently, it was calcined at 400-500℃ for 2-3 hours under a nitrogen atmosphere to obtain modified mesoporous silica.
[0025] More preferably, the mass ratio of copper oxide to manganese oxide in the active component is 1:1; and the mass ratio of lanthanum oxide to cerium oxide in the auxiliary agent is 1:2.
[0026] This invention provides a method for preparing a high-efficiency deoxygenation catalyst at room temperature, the specific preparation steps of which are as follows: (1) Preparation of active component precursor solution: Dissolve copper source and manganese source in deionized water at a mass ratio of 1:(0.8-1.2) and stir until completely dissolved to obtain active component precursor solution; the copper source is at least one of copper nitrate and copper chloride; the manganese source is at least one of manganese nitrate and manganese chloride; preferably, the mass ratio of copper source and manganese source is 1:1. (2) Preparation of auxiliary agent precursor solution: Dissolve lanthanum source and cerium source in deionized water at a mass ratio of 1:(1.5-2.5) and stir until completely dissolved to obtain auxiliary agent precursor solution; the lanthanum source is at least one of lanthanum nitrate and lanthanum chloride; the cerium source is at least one of cerium nitrate and cerium chloride; preferably, the mass ratio of lanthanum source and cerium source is 1:2; (3) Impregnation loading: Weigh a certain amount of modified mesoporous silica according to the above proportion, add it to the active component precursor solution, stir and impregnate at 30°C for 6 hours, then add the auxiliary agent precursor solution, continue stirring and impregnating for 3 hours to obtain the loaded mixture; wherein, the mass ratio of the carrier modified mesoporous silica to the mixed solution composed of the active component precursor solution and the auxiliary agent precursor solution is 1:6; (4) Post-treatment: The loaded mixture is filtered and washed until no nitrate ions are detected in the washing liquid; the washed solid is dried at 80 ℃~120 ℃ for 12 h~24 h, then calcined at 300 ℃~500 ℃ for 4 h~6 h, and then cooled to room temperature to obtain a room temperature high-efficiency deoxygenation catalyst.
[0027] This invention also provides the application of the aforementioned high-efficiency deoxygenation catalyst at room temperature in the deoxygenation process.
[0028] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.
[0029] The following examples use instruments and equipment conventional in the art. Experimental methods in the following examples, unless otherwise specified, are generally performed under conventional conditions or as recommended by the manufacturer. All raw materials used in the following examples are conventional commercially available products with specifications conventional in the art. In this specification and the following examples, unless otherwise specified, "%" refers to weight percentage, "parts" refers to parts by weight, and "ratio" refers to weight proportion.
[0030] Example 1 This embodiment provides a high-efficiency deoxygenation catalyst at room temperature, which comprises the following components by mass percentage (based on 100% of the total catalyst mass): The composition consists of 80% modified mesoporous silica, 15% active component (copper oxide to manganese oxide in a 1:1 mass ratio), and 5% additives (lanthanum oxide to cerium oxide in a 1:2 mass ratio); the modified mesoporous silica has a specific surface area of 1000 m². 2 / g, pore size is 3nm, particle size is 100 mesh.
[0031] This embodiment provides a method for preparing a high-efficiency deoxygenation catalyst at room temperature, as detailed below: (1) Preparation of active component precursor solution: Weigh copper nitrate (Cu(NO)3) 24.9 g of manganese nitrate (Mn(NO3)2) and 37.3 g of manganese nitrate (Mn(NO3)2) were dissolved in 100 mL of deionized water and stirred until completely dissolved to obtain an active component precursor solution with a concentration of 0.8 mol / L. (2) Preparation of precursor solution for auxiliary agent: Weigh out lanthanum nitrate (La(NO3)3) 8.6g of 6H2O and cerium nitrate (Ce(NO3)3) 21.7 g of 6H2O was dissolved in 50 mL of deionized water and stirred until completely dissolved to obtain a precursor solution of 0.3 mol / L. (3) Impregnation loading: Weigh 8g of modified mesoporous silica and add it to the above active component precursor solution. Stir and impregnate at 35°C for 5h. Then add the auxiliary agent precursor solution and continue stirring and impregnating for 2.5h. (4) Drying: Filter the mixed system, collect the filter cake, and dry the filter cake in an oven at 105°C for 12 hours; (5) Calcination: The dried product is placed in a muffle furnace and heated to 400°C at a heating rate of 6°C / min in an air atmosphere. The temperature is maintained for 4 hours and then naturally cooled to room temperature to obtain a high-efficiency deoxygenation catalyst at room temperature.
[0032] The application test results of the room-temperature high-efficiency deoxygenation catalyst prepared in this embodiment are as follows: The room-temperature high-efficiency deoxygenation catalyst prepared in this embodiment was mixed with iron powder at a mass ratio of 1:4, and then loaded into a container with an oxygen permeability of 150 cm⁻¹. 3 / (m 2 24h An oxygen absorber pack was prepared using a breathable packaging material with a pressure of 0.1 MPa. Under conditions of 25°C and 60% relative humidity, the oxygen absorber pack was placed in a 500 mL sealed container (initial oxygen concentration 21%). After 1 hour, the oxygen concentration in the container was measured to be 0.8%, indicating an oxygen removal rate of 99.95%. After 30 days of continuous use, the oxygen removal rate remained at 85.7%, demonstrating good catalytic activity.
[0033] Example 2 This embodiment provides a high-efficiency deoxygenation catalyst at room temperature, which comprises the following components by mass percentage (based on 100% of the total catalyst mass): It contains 75% modified mesoporous silica, 18% active component (copper oxide to manganese oxide in a mass ratio of 1:0.8), and 7% additives (lanthanum oxide to cerium oxide in a mass ratio of 1:1.5); the modified mesoporous silica has a specific surface area of 800 m². 2 / g, pore size is 3nm, particle size is 90 mesh.
[0034] This embodiment provides a method for preparing a high-efficiency deoxygenation catalyst at room temperature, as detailed below: (1) Preparation of active component precursor solution: Weigh copper chloride (CuCl2) 17.1g of 2H2O and manganese chloride (MnCl2) 23.8 g of 4H2O was dissolved in 800 mL of deionized water and stirred until completely dissolved to obtain a precursor solution of the active component with a concentration of 0.5 mol / L. (2) Preparation of precursor solution for auxiliary agent: Weigh out lanthanum chloride (LaCl3) 9.1g of 7H2O and cerium chloride (CeCl3) 20.8 g of 7H2O was dissolved in 40 mL of deionized water and stirred until completely dissolved to obtain a precursor solution of 0.2 mol / L. (3) Impregnation loading: Weigh 7.5 g of modified mesoporous silica and add it to the above active component precursor solution. Stir and impregnate at 30 °C for 6 h. Then add the auxiliary agent precursor solution and continue stirring and impregnating for 3 h. (4) Drying: Filter the mixed system, collect the filter cake, and dry the filter cake in an oven at 100°C for 14 h; (5) Calcination: Under air atmosphere, the temperature is increased to 350℃ at a heating rate of 5℃ / min, and calcined for 5h. After cooling, the catalyst is obtained.
[0035] The application test results of the room-temperature high-efficiency deoxygenation catalyst prepared in this embodiment are as follows: The high-efficiency deoxygenation catalyst prepared in this embodiment was mixed with sodium sulfite at a mass ratio of 1:3 to form a deoxygenation agent package. Under conditions of 25°C and 50% relative humidity, the oxygen removal rate in a closed space reached 99.92% within 1 hour, and the activity retention rate was 85.0% after 30 days.
[0036] Example 3 This embodiment provides a high-efficiency deoxygenation catalyst at room temperature, which comprises the following components by mass percentage (based on 100% of the total catalyst mass): The composition consists of 85% modified mesoporous silica, 10% active component (copper oxide to manganese oxide in a mass ratio of 1:1.2), and 5% additives (lanthanum oxide to cerium oxide in a mass ratio of 1:2.5); the specific surface area of the modified mesoporous silica is 1200 m². 2 / g, pore size is 5nm, particle size is 120 mesh.
[0037] This embodiment provides a method for preparing a high-efficiency deoxygenation catalyst at room temperature, which differs from the preparation method in Example 1 as follows: The concentration of the active component precursor solution was 1.0 mol / L, and the concentration of the auxiliary agent precursor solution was 0.5 mol / L; the impregnation temperature was 40℃, the impregnation time of the active component was 4 h, and the impregnation time of the auxiliary agent was 2 h; the calcination temperature was 450℃, the heating rate was 8℃ / min, and the calcination time was 3 h.
[0038] The application test results of the room-temperature high-efficiency deoxygenation catalyst prepared in this embodiment are as follows: The room-temperature high-efficiency deoxygenation catalyst prepared in this embodiment was mixed with ascorbic acid at a mass ratio of 1:5 to form a deoxygenation agent package. Under conditions of 25°C and 70% relative humidity, the oxygen removal rate reached 99.94% within 1 hour, and the activity retention rate was 86.3% after 30 days.
[0039] The catalysts prepared in Examples 1-3 were used to deoxygenate nitrogen containing oxygen. The test conditions were: gas flow rate of 100 mL / min, catalyst dosage of 5 g, and reaction temperature of 25 °C. The test results are shown in Table 1 below.
[0040] Table 1
[0041] The test results show that the room-temperature high-efficiency deoxygenation catalyst prepared by this invention has excellent deoxygenation performance, with a deoxygenation rate of over 99.9%, which can meet the deoxygenation requirements in industrial production.
[0042] Example 4 This embodiment provides a high-efficiency deoxygenation catalyst at room temperature, which comprises the following components by mass percentage (based on 100% of the total catalyst mass): The composition consists of 70% modified mesoporous silica, 20% active component (copper oxide to manganese oxide in a 1:1 mass ratio), and 10% additives (lanthanum oxide to cerium oxide in a 1:2 mass ratio); the modified mesoporous silica has a specific surface area of 1200 m². 2 / g, pore size is 5nm, particle size is 120 mesh.
[0043] Example 5 This embodiment provides a high-efficiency deoxygenation catalyst at room temperature, which comprises the following components by mass percentage (based on 100% of the total catalyst mass): The composition consists of 70% modified mesoporous silica, 15% active component (copper oxide to manganese oxide in a 1:1 mass ratio), and 15% additives (lanthanum oxide to cerium oxide in a 1:2 mass ratio); the modified mesoporous silica has a specific surface area of 1200 m². 2 / g, pore size is 5nm, particle size is 120 mesh.
[0044] Comparative Example 1 Compared with Example 1, no additives were added, and the catalyst was prepared under the same conditions.
[0045] The application tests of the catalyst prepared in this comparative example are as follows: The catalyst prepared in this comparative example was mixed with iron powder at a mass ratio of 1:4, and then loaded into a container with an oxygen permeability of 150 cm⁻¹. 3 / (m 2 24h An oxygen absorber pack was prepared using a breathable packaging material with a pressure of 0.1 MPa. Under conditions of 25°C and 60% relative humidity, the oxygen absorber pack was placed in a 500 mL sealed container (initial oxygen concentration 21%). Application tests showed that the oxygen removal rate was 78.3% within 1 hour, and the activity retention rate was 62.1% after 30 days, significantly lower than in Example 1.
[0046] Comparative Example 2 Compared with Example 1, the catalyst was prepared using unmodified mesoporous silica as the support and under the same other conditions.
[0047] The application tests of the catalyst prepared in this comparative example are as follows: The catalyst prepared in this comparative example was mixed with iron powder at a mass ratio of 1:4, and then loaded into a container with an oxygen permeability of 150 cm⁻¹. 3 / (m 2 24h An oxygen absorber pack was prepared using a breathable packaging material with a pressure of 0.1 MPa. Under conditions of 25°C and 60% relative humidity, the oxygen absorber pack was placed in a 500 mL sealed container (initial oxygen concentration 21%). Application tests showed that the oxygen removal rate was 82.5% within 1 hour, and the activity retention rate was 68.7% after 30 days, which was lower than that in Example 1.
[0048] Comparative Example 3 Compared with Example 1, the active component was copper oxide alone, and the catalyst was prepared under the same conditions.
[0049] The application tests of the catalyst prepared in this comparative example are as follows: The catalyst prepared in this comparative example was mixed with iron powder at a mass ratio of 1:4, and then loaded into a container with an oxygen permeability of 150 cm⁻¹. 3 / (m 2 24h An oxygen absorber pack was prepared using a breathable packaging material with a pressure of 0.1 MPa. Under conditions of 25°C and 60% relative humidity, the oxygen absorber pack was placed in a 500 mL sealed container (initial oxygen concentration 21%). Application tests showed that the oxygen removal rate was 75.2% within 1 hour, and the activity retention rate was 59.5% after 30 days, significantly lower than in Example 1.
[0050] As can be seen from the above embodiments and comparative examples, the room-temperature high-efficiency deoxygenation catalyst of the present invention significantly improves catalytic activity, stability and deoxygenation efficiency by rationally selecting the support, active components and additives and optimizing the preparation process, and has obvious technical advantages.
[0051] The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made to the technical solution based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.
Claims
1. A high-efficiency deoxygenation catalyst at room temperature, characterized in that, By mass percentage, it includes 70%-85% carrier, 10%-20% active ingredient, and 5%-15% additives; The carrier is modified mesoporous silica; the active component is a mixture of copper oxide and manganese oxide, and the mass ratio of copper oxide to manganese oxide is 1:(0.8-1.2); the auxiliary agent is a mixture of lanthanum oxide and cerium oxide, and the mass ratio of lanthanum oxide to cerium oxide is 1:(1.5-2.5).
2. The high-efficiency deoxygenation catalyst at room temperature according to claim 1, characterized in that, The preparation process of the modified mesoporous silica is as follows: Mesoporous silica was placed in a 5%-10% nitric acid solution and refluxed and stirred at 60-80℃ for 2-4 hours. After filtration, it was washed with deionized water until neutral and dried at 105-110℃ for 8-12 hours. Subsequently, it was calcined at 400-500℃ for 2-3 hours under a nitrogen atmosphere to obtain modified mesoporous silica.
3. The high-efficiency deoxygenation catalyst at room temperature according to claim 1 or 2, characterized in that, The modified mesoporous silica has a specific surface area of 800 m². 2 / g-1200 m 2 / g, pore size is 2 nm-5 nm, particle size is 80-120 mesh.
4. The high-efficiency deoxygenation catalyst at room temperature according to claim 1, characterized in that, The active component has a copper oxide to manganese oxide mass ratio of 1:1; the auxiliary agent has a lanthanum oxide to cerium oxide mass ratio of 1:
2.
5. The method for preparing the room-temperature high-efficiency deoxygenation catalyst according to any one of claims 1 to 4, characterized in that, Includes the following steps: The copper and manganese sources were dissolved in deionized water and stirred until completely dissolved to obtain the active component precursor solution. Lanthanum source and cerium source were dissolved in deionized water and stirred until completely dissolved to obtain an auxiliary agent precursor solution. Modified mesoporous silica was added to the active component precursor solution for the first stirring and impregnation, and then the auxiliary agent precursor solution was added for the second stirring and impregnation to obtain the loaded mixture. The loaded mixture was sequentially filtered, washed, dried, calcined, and cooled to obtain a high-efficiency deoxygenation catalyst at room temperature.
6. The method for preparing the room-temperature high-efficiency deoxygenation catalyst according to claim 5, characterized in that, The mass ratio of the copper source to the manganese source is 1:(0.8-1.2); the mass ratio of the lanthanum source to the cerium source is 1:(1.5-2.5).
7. The method for preparing the room-temperature high-efficiency deoxygenation catalyst according to claim 5, characterized in that, The lanthanum source is at least one of lanthanum nitrate and lanthanum chloride; the cerium source is at least one of cerium nitrate and cerium chloride; the copper source is at least one of copper nitrate and copper chloride; and the manganese source is at least one of manganese nitrate and manganese chloride.
8. The method for preparing the room-temperature high-efficiency deoxygenation catalyst according to claim 5, characterized in that, The mass ratio of the sum of the active component precursor solution and the auxiliary agent precursor solution to the mass of modified mesoporous silica is 6:
1.
9. The method for preparing the room-temperature high-efficiency deoxygenation catalyst according to claim 5, characterized in that, The first stirring and impregnation time is 6 hours and the temperature is 30℃; the second stirring and impregnation time is 3 hours; the drying temperature is 80℃~120℃ and the drying time is 12 hours~24 hours; the calcination treatment temperature is 300℃~500℃ and the calcination treatment temperature is 4 hours~6 hours.
10. The application of the room-temperature high-efficiency deoxygenation catalyst as described in any one of claims 1 to 4 in the deoxygenation process.