A novel honeycomb activated carbon for adsorption-desorption catalytic combustion processes

Abstract

This invention relates to a novel honeycomb activated carbon for adsorption-desorption catalytic combustion processes, belonging to the field of activated carbon technology. The novel honeycomb activated carbon comprises the following raw materials: a composite matrix, a composite activator, cobalt nitrate hexahydrate, zirconium oxynitrate hydrate, platinum nitrate, polyvinylpyrrolidone, and hexadecylamine. This invention uses beet pulp, enoki mushroom residue, and king oyster mushroom residue as the composite matrix to provide a large number of hydroxyl groups. Potassium bicarbonate and triammonium phosphate are used as the composite activator to dehydrate, condense, and interconnect the numerous hydroxyl groups on the composite matrix, effectively increasing the pore structure of the system and providing a large number of adsorption sites, facilitating the adsorption and mass transfer of VOCs. Simultaneously, the introduction of cobalt, zirconium, and platinum metal elements significantly improves the catalytic combustion performance of the system for VOCs. The addition of polyvinylpyrrolidone and hexadecylamine further enhances the catalytic combustion performance of the system.

Description

Technical Field

[0001] This invention belongs to the field of activated carbon technology, specifically, it relates to a novel honeycomb activated carbon for adsorption-desorption catalytic combustion processes. Background Technology

[0002] Adsorption-desorption catalytic combustion is a commonly used combustion technology. Its working principle involves utilizing the adsorption properties of adsorbents such as activated carbon and coke to adsorb harmful substances or gases. Desorption and combustion are then achieved by controlling temperature and gas flow, converting volatile organic compounds (VOCs) into carbon dioxide, water, and small amounts of other gases, while simultaneously generating harmless solid products, thus achieving pollution control. VOCs mainly refer to organic compounds that participate in atmospheric photochemical reactions, such as benzene, toluene, and xylene, with toluene being the most common.

[0003] Currently, activated carbon is the most common adsorbent on the market that has this adsorption-desorption-catalytic combustion effect. However, although there are many types of activated carbon on the market, their conversion of volatile organic compounds is unsatisfactory and falls far short of industry requirements. Therefore, it is particularly important to provide an activated carbon that can improve the conversion rate of volatile organic compounds. Summary of the Invention

[0004] The purpose of this invention is to provide a novel honeycomb activated carbon for adsorption-desorption catalytic combustion processes. This invention uses beet pulp, enoki mushroom residue, and king oyster mushroom residue as a composite matrix to provide a large number of hydroxyl groups. Potassium bicarbonate and triammonium phosphate are used as composite activators to dehydrate, condense, and interconnect the numerous hydroxyl groups on the composite matrix, effectively increasing the pore structure of the system and providing a large number of adsorption sites, facilitating the adsorption and mass transfer of VOCs. Simultaneously, the introduction of cobalt, zirconium, and platinum elements into the system significantly improves the catalytic combustion performance of VOCs. The addition of polyvinylpyrrolidone and hexadecylamine further enhances the catalytic combustion performance of the system, solving the problem of poor VOCs conversion rates in existing catalytic combustion technologies.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A novel honeycomb activated carbon for adsorption-desorption catalytic combustion processes, the novel honeycomb activated carbon comprising the following raw materials in parts by weight:

[0007]

[0008] As a preferred embodiment of the present invention, the compound matrix is ​​composed of beet pulp, enoki mushroom residue and king oyster mushroom residue in a weight ratio of 1.5:1-1.3:1-1.1.

[0009] As a preferred embodiment of the present invention, the composite activator is composed of potassium bicarbonate and triammonium phosphate in a weight ratio of 1:0.7-0.8.

[0010] A method for preparing novel honeycomb activated carbon for adsorption-desorption catalytic combustion processes, the method comprising the following steps:

[0011] S10. Pre-treat the compound matrix to obtain the pre-treated material;

[0012] S20. Mix the pretreated material and deionized water evenly and add the composite activator while stirring at a controlled speed to obtain mixture A. Transfer mixture A to a hydrothermal reactor and react at a controlled temperature. After the reaction is completed, cool to room temperature and filter. Dry the filter residue at a controlled temperature to obtain intermediate material A.

[0013] S30. Mix cobalt nitrate hexahydrate, zirconium oxynitrate hydrate and platinum nitrate evenly to obtain mixture B. Mix hexadecylamine and anhydrous ethanol evenly to obtain mixture A. Add deionized water, polyvinylpyrrolidone and mixture A to mixture B in sequence and stir while controlling the temperature to obtain mixture B. Add intermediate material A to mixture B for soaking. After soaking, rinse and dry under controlled temperature to obtain intermediate material B.

[0014] S40. Heat intermediate material B to pyrolyze, cool and wash to obtain intermediate material C. Extrude intermediate material C into shape in a honeycomb extruder, dry at controlled temperature to obtain a new type of honeycomb activated carbon.

[0015] As a preferred embodiment of the present invention, the preprocessing in step S10 specifically includes:

[0016] S11. Mix the compound matrix evenly, dry under controlled temperature, crush, sieve, and dry under controlled temperature again to obtain the sieved material;

[0017] S12. Heat the sieved material to pyrolyze it, and cool it after pyrolysis to obtain the pretreated material.

[0018] As a preferred embodiment of the present invention, the temperature of the temperature-controlled drying in step S11 is 60-65℃; the sieving is done through a 10-mesh sieve; the temperature of the temperature-controlled drying is 100-105℃, and the time is 0.5-1h.

[0019] As a preferred embodiment of the present invention, the heating pyrolysis in step S12 specifically involves heating to 500-520℃ at a heating rate of 5℃ / min and pyrolyzing for 60-70 minutes, wherein the pyrolysis atmosphere is N2 at a rate of 100 mL / min; the cooling involves cooling to room temperature.

[0020] In a preferred embodiment of the present invention, the ratio of the pretreated material to deionized water in step S20 is 1g:10-12mL; the speed of the controlled stirring is 280-320r / min, and the time is 1-1.5h; the temperature of the controlled reaction is 145-150℃, and the time is 4-6h; the temperature of the controlled drying is 100-105℃.

[0021] In a preferred embodiment of the present invention, the ratio of mixture B to deionized water in step S30 is 1g:20-25mL; the ratio of hexadecylamine to anhydrous ethanol is 1g:1.3-1.5mL; the temperature for temperature-controlled stirring is 55-60℃ for 10-20min; the soaking time is 4-5h; the rinsing is performed 5-7 times with deionized water; and the temperature for temperature-controlled drying is 90-100℃ for 6-8h.

[0022] As a preferred embodiment of the present invention, the heating and pyrolysis in step S40 specifically involves heating to 600-700℃ at a heating rate of 5℃ / min for 1-1.5h, wherein the pyrolysis atmosphere is N2 at a rate of 100mL / min; the cooling and washing involves cooling to room temperature and washing with deionized water until neutral; and the temperature for temperature-controlled drying is 100-105℃.

[0023] The beneficial effects of this invention are:

[0024] (1) The selection and ratio of the composite activator and the composite matrix raw materials of the present invention are appropriate. The composite activator of the present invention can effectively activate the composite matrix by pyrolysis, so that each component can play its own role, resulting in activated carbon with a large specific surface area, rich pore structure and good adsorption and desorption effect of VOCs. Based on this, the present invention also introduces cobalt, zirconium and platinum elements to catalytically burn the VOCs adsorbed in the system into water and carbon dioxide, and uses polyvinylpyrrolidone and hexadecylamine to make cobalt, zirconium and platinum ions uniformly dispersed and stabilized in the system, thereby enhancing the catalytic combustion performance of the system.

[0025] (2) In this invention, beet pulp, enoki mushroom residue and king oyster mushroom residue are used as a composite matrix to prepare activated carbon. Beet pulp provides cellulose, enoki mushroom residue provides hemicellulose, and king oyster mushroom residue supplements cellulose and hemicellulose, so that the composite matrix has a large amount of cellulose and hemicellulose to provide a large number of hydroxyl groups, which lays a good foundation for the subsequent preparation of high specific surface area activated carbon. On this basis, potassium bicarbonate and triammonium phosphate are used as composite activators for pyrolysis activation. At the same time, a large number of hydroxyl groups on the composite matrix undergo dehydration, condensation and interconnection to form a three-dimensional interconnected structure, which greatly increases the formation of pore structure in the system. Potassium bicarbonate in the composite activator can effectively promote the formation of mesopores in the pore structure, providing a transport channel for VOCs molecules to enter the micropores. In addition, during the action of potassium bicarbonate, the new substances produced can continue to play a corrosive role to form a small number of new micropores, while triammonium phosphate effectively assists potassium bicarbonate in improving the richness of the micropore structure, providing a large number of adsorption sites, which is beneficial to the adsorption and mass transfer of VOCs.

[0026] (3) In this invention, cobalt nitrate hexahydrate and zirconium oxynitrate hydrate are added to play the main active role in catalytically burning the adsorbed VOCs in the system into water and carbon dioxide. At the same time, platinum nitrate is added to enhance the catalytic combustion effect of cobalt and zirconium elements, which significantly improves the catalytic combustion performance of the system for VOCs.

[0027] (4) In this invention, polyvinylpyrrolidone is used to prevent the aggregation of cobalt, zirconium and platinum ions in the system, and hexadecylamine is used as a stabilizer to stabilize cobalt, zirconium and platinum ions. Therefore, the synergistic effect of the two makes the metal ions in the system uniformly dispersed and stable, further enhancing the catalytic combustion performance of the system. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1

[0030] A novel honeycomb activated carbon for adsorption-desorption catalytic combustion processes, the novel honeycomb activated carbon comprising the following raw materials in parts by weight:

[0031]

[0032] The compound matrix consists of beet pulp, enoki mushroom residue, and king oyster mushroom residue in a weight ratio of 1.5:1:1, i.e., beet pulp is 2.14 parts by weight, enoki mushroom residue is 1.43 parts by weight, and king oyster mushroom residue is 1.43 parts by weight; the compound activator consists of potassium bicarbonate and triammonium phosphate in a weight ratio of 1:0.75, i.e., potassium bicarbonate is 12.29 parts by weight and triammonium phosphate is 9.21 parts by weight.

[0033] The preparation method of the novel honeycomb activated carbon in the adsorption-desorption catalytic combustion process includes the following steps:

[0034] S10. Pre-treat the compound matrix:

[0035] S11. Mix the compound matrix evenly, dry it at 63℃, crush it, pass it through a 10-mesh sieve, and then dry it at 100℃ for 0.5 hours to obtain the sieved material.

[0036] S12. Heat the sieved material to 510℃ at a heating rate of 5℃ / min and pyrolyze for 70min. The pyrolysis atmosphere is N2 at a rate of 100mL / min. After pyrolysis, cool to room temperature to obtain the pretreated material.

[0037] S20. Mix the pretreated material and deionized water evenly and add the composite activator. Stir at 280 r / min for 1.3 h to obtain mixture A. Transfer mixture A to a hydrothermal reactor and react at 145℃ for 4 h. After the reaction is completed, cool to room temperature and filter. Dry the filter residue at 103℃ to obtain intermediate material A.

[0038] The ratio of the pretreated material to deionized water is 1g:11mL;

[0039] S30. Mix cobalt nitrate hexahydrate, zirconium oxynitrate hydrate and platinum nitrate evenly to obtain mixture B. Mix hexadecylamine and anhydrous ethanol evenly to obtain mixture A. Add deionized water, polyvinylpyrrolidone and mixture A to mixture B in sequence and stir at 55℃ for 20 min to obtain mixture B. Add intermediate material A to mixture B and soak for 4 h. After soaking, rinse 7 times with deionized water and dry at 90℃ for 7 h to obtain intermediate material B.

[0040] In step S30, the ratio of mixture B to deionized water is 1 g: 23 mL; the ratio of hexadecylamine to anhydrous ethanol is 1 g: 1.5 mL.

[0041] S40. The intermediate material B is heated to 600℃ at a heating rate of 5℃ / min and pyrolyzed for 1 hour. The pyrolysis atmosphere is N2 at a rate of 100mL / min. After pyrolysis, the material is cooled to room temperature and washed with deionized water until neutral to obtain intermediate material C. Intermediate material C is extruded into shape in a honeycomb extruder and then dried at a controlled temperature of 105℃ to obtain a novel honeycomb activated carbon.

[0042] Example 2

[0043] A novel honeycomb activated carbon for adsorption-desorption catalytic combustion processes, the novel honeycomb activated carbon comprising the following raw materials in parts by weight:

[0044]

[0045]

[0046] The compound matrix consists of beet pulp, enoki mushroom residue, and king oyster mushroom residue in a weight ratio of 1.5:1.3:1, i.e., beet pulp is 3.15 parts by weight, enoki mushroom residue is 2.74 parts by weight, and king oyster mushroom residue is 2.11 parts by weight; the compound activator consists of potassium bicarbonate and triammonium phosphate in a weight ratio of 1:0.8, i.e., potassium bicarbonate is 10 parts by weight and triammonium phosphate is 8 parts by weight.

[0047] The preparation method of the novel honeycomb activated carbon in the adsorption-desorption catalytic combustion process includes the following steps:

[0048] S10. Pre-treat the compound matrix:

[0049] S11. Mix the compound matrix evenly, dry it at 65℃, crush it, pass it through a 10-mesh sieve, and then dry it at 105℃ for 1 hour to obtain the sieved material.

[0050] S12. Heat the sieved material to 520℃ at a heating rate of 5℃ / min and pyrolyze for 65min. The pyrolysis atmosphere is N2 at a rate of 100mL / min. After pyrolysis, cool to room temperature to obtain the pretreated material.

[0051] S20. Mix the pretreated material and deionized water evenly and add the composite activator. Stir at 300 r / min for 1.5 h to obtain mixture A. Transfer mixture A to a hydrothermal reactor and react at 150 ℃ for 6 h. After the reaction is completed, cool to room temperature and filter. Dry the filter residue at 103 ℃ to obtain intermediate material A.

[0052] The ratio of the pretreated material to deionized water is 1g:10mL;

[0053] S30. Mix cobalt nitrate hexahydrate, zirconium oxynitrate hydrate and platinum nitrate evenly to obtain mixture B. Mix hexadecylamine and anhydrous ethanol evenly to obtain mixture A. Add deionized water, polyvinylpyrrolidone and mixture A to mixture B in sequence and stir at 60℃ for 10 min to obtain mixture B. Add intermediate material A to mixture B and soak for 4.5 h. After soaking, rinse with deionized water 5 times and dry at 100℃ for 8 h to obtain intermediate material B.

[0054] In step S30, the ratio of mixture B to deionized water is 1 g: 25 mL; the ratio of hexadecylamine to anhydrous ethanol is 1 g: 1.4 mL.

[0055] S40. The intermediate material B is heated to 700℃ at a heating rate of 5℃ / min and pyrolyzed for 1 hour. The pyrolysis atmosphere is N2 at a rate of 100mL / min. After pyrolysis, the material is cooled to room temperature and washed with deionized water until neutral to obtain intermediate material C. Intermediate material C is extruded into shape in a honeycomb extruder and then dried at a controlled temperature of 102℃ to obtain a novel honeycomb activated carbon.

[0056] Example 3

[0057] A novel honeycomb activated carbon for adsorption-desorption catalytic combustion processes, the novel honeycomb activated carbon comprising the following raw materials in parts by weight:

[0058]

[0059] The compound matrix consists of beet pulp, enoki mushroom residue, and king oyster mushroom residue in a weight ratio of 1.5:1.2:1.1, i.e., beet pulp is 2.57 parts by weight, enoki mushroom residue is 2.05 parts by weight, and king oyster mushroom residue is 1.88 parts by weight; the compound activator consists of potassium bicarbonate and triammonium phosphate in a weight ratio of 1:0.7, i.e., potassium bicarbonate is 14.71 parts by weight and triammonium phosphate is 10.29 parts by weight.

[0060] The method for preparing the novel honeycomb activated carbon in the adsorption-desorption catalytic combustion process includes the following steps:

[0061] S10. Pre-treat the composite matrix:

[0062] S11. Mix the compound matrix evenly, dry it at 65℃, crush it, pass it through a 10-mesh sieve, and then dry it at 103℃ for 1 hour to obtain the sieved material.

[0063] S12. Heat the sieved material to 520℃ at a heating rate of 5℃ / min and pyrolyze for 65min. The pyrolysis atmosphere is N2 at a rate of 100mL / min. After pyrolysis, cool to room temperature to obtain the pretreated material.

[0064] S20. Mix the pretreated material and deionized water evenly and add the composite activator. Stir at 320 r / min for 1 h to obtain mixture A. Transfer mixture A to a hydrothermal reactor and react at 148℃ for 5 h. After the reaction is completed, cool to room temperature and filter. Dry the filter residue at 100℃ to obtain intermediate material A.

[0065] The ratio of the pretreated material to deionized water is 1g:12mL;

[0066] S30. Mix cobalt nitrate hexahydrate, zirconium oxynitrate hydrate and platinum nitrate evenly to obtain mixture B. Mix hexadecylamine and anhydrous ethanol evenly to obtain mixture A. Add deionized water, polyvinylpyrrolidone and mixture A to mixture B in sequence and stir at 58℃ for 15 min to obtain mixture B. Add intermediate material A to mixture B and soak for 5 h. After soaking, rinse with deionized water 6 times and dry at 95℃ for 6 h to obtain intermediate material B.

[0067] In step S30, the ratio of mixture B to deionized water is 1g:20mL; the ratio of hexadecylamine to anhydrous ethanol is 1g:1.3mL.

[0068] S40. The intermediate material B is heated to 650℃ at a heating rate of 5℃ / min and pyrolyzed for 1.5h. The pyrolysis atmosphere is N2 at a rate of 100mL / min. After pyrolysis, it is cooled to room temperature and washed with deionized water until neutral to obtain intermediate material C. Intermediate material C is extruded into shape in a honeycomb extruder and then dried at a controlled temperature of 100℃ to obtain a novel honeycomb activated carbon.

[0069] Comparative Examples 1-3

[0070] Compared with Example 3, the difference is that the weight parts of beet pulp, enoki mushroom residue and king oyster mushroom residue in the compound matrix of Comparative Examples 1-3 are shown in Table 1, while the other parameters and operating steps remain unchanged.

[0071] Table 1

[0072] Beet pulp (by weight) Enoki mushroom residue (parts by weight) King oyster mushroom residue (by weight) Comparative Example 1 0 3.34 3.16 Comparative Example 2 3.59 0 2.91 Comparative Example 3 3.51 2.99 0

[0073] Comparative Example 4

[0074] Compared with Example 3, the difference is that potassium bicarbonate was not added in Comparative Example 4, while the other operation steps and parameters were the same.

[0075] Comparative Example 5

[0076] Compared with Example 3, the difference is that no triammonium phosphate was added in Comparative Example 5, while the other operation steps and parameters were the same.

[0077] Test Example 1

[0078] Using a specific surface area analyzer, the novel honeycomb activated carbon prepared in Examples 1-3 and Comparative Examples 1-5 of this invention was tested within a test range of 0-1 MPa, at a test temperature of 77 K, and with a nitrogen purity of 99.99%. Based on the obtained nitrogen adsorption curves, the specific surface area of ​​the activated carbon was tested and analyzed. The specific surface area of ​​the samples was calculated using the BET method based on the adsorption data at a relative pressure of 0.05-0.35, and the total pore volume of the samples was calculated based on the adsorption data at a relative pressure of 0.99. The results are shown in Table 2.

[0079] Table 2

[0080] <![CDATA[Specific surface area (m 2 / g)]]> <![CDATA[Total pore volume (cm 3 / g)]]> Example 1 2208.3 1.159 Example 2 2243.6 1.178 Example 3 2297.5 1.194 Comparative Example 1 1863.8 1.046 Comparative Example 2 1924.6 1.103 Comparative Example 3 1973.2 1.110 Comparative Example 4 1639.0 0.902 Comparative Example 5 1762.9 1.035

[0081] As shown in Table 2, the novel honeycomb activated carbon prepared by this invention has a high specific surface area and a large total pore volume. This is because this invention uses beet pulp, enoki mushroom residue, and king oyster mushroom residue as a composite matrix to provide a large number of hydroxyl groups, and uses potassium bicarbonate and triammonium phosphate as composite activators to dehydrate, condense, and interconnect the large number of hydroxyl groups on the composite matrix, effectively increasing the formation of pore structure in the system and providing a large number of adsorption sites.

[0082] Comparative Examples 6-8

[0083] Compared with Example 3, the difference is that the weight parts of cobalt nitrate hexahydrate, zirconium oxynitrate hydrate and platinum nitrate in Comparative Examples 6-8 are as shown in Table 3, while the other parameters and operating steps remain unchanged.

[0084] Table 3

[0085]

[0086] Comparative Example 9

[0087] Compared with Example 3, the difference is that polyvinylpyrrolidone was not added in Comparative Example 9, while the other operation steps and parameters were the same.

[0088] Comparative Example 10

[0089] The difference between Comparative Example 10 and Example 3 is that no hexadecylamine was added, while the other operating steps and parameters were the same.

[0090] Test Example 2

[0091] Toluene gas with a concentration of 1000 ppm was prepared using a bubbling method. This toluene gas was then passed into a stainless steel reactor with an inner diameter of 10 mm and a length of 320 mm, containing the same mass of the novel honeycomb activated carbon prepared in Examples 1-3 and Comparative Examples 6-10 of this invention. The bed height was 1 cm, and the gas flow rate was 200 mL / min. Catalytic combustion experiments were conducted at atmospheric pressure and 280 °C. The concentration of toluene gas after passing through the reactor was detected by a gas chromatograph. The test conditions were as follows: FID detector, HP-5 capillary column, helium flow rate of 25 mL / min, hydrogen flow rate of 35 mL / min, air flow rate of 375 mL / min, column temperature of 180 °C, detector temperature of 250 °C, and vaporization chamber temperature of 180 °C. In this test, the products obtained after the catalytic combustion of toluene gas were carbon dioxide and water. The toluene gas conversion rate was evaluated using the following formula:

[0092] Conversion rate (%) = [C 甲苯(in) -C 甲苯(out) ] / C 甲苯(in) ×100%;

[0093] Among them, C 甲苯(in) (mg / L) and C 甲苯(out) (mg / L) represent the inlet concentration and outlet concentration of toluene, respectively, and the results are shown in Table 4.

[0094] Table 4

[0095] Conversion rate (%) Example 1 94 Example 2 94 Example 3 95 Comparative Example 6 80 Comparative Example 7 84 Comparative Example 8 82 Comparative Example 9 88 Comparative Example 10 89

[0096] As can be seen from Table 4, the novel honeycomb activated carbon prepared by this invention has outstanding catalytic combustion performance and excellent toluene gas conversion rate.

[0097] In the description of this specification, the references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0098] The above description is merely an example and illustration of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the invention or exceed the scope defined in the claims, they should all fall within the protection scope of the present invention.

Claims

1. A honeycomb activated carbon for adsorption-desorption catalytic combustion processes, characterized in that, The honeycomb activated carbon comprises the following raw materials in parts by weight: 5-8 parts by weight of compound matrix 18-25 parts by weight of compound activator 6-8 parts by weight of cobalt nitrate hexahydrate 5-6 parts by weight of zirconium oxynitrate hydrate 6-7 parts by weight of platinum nitrate 5-7 parts by weight of polyvinylpyrrolidone 4-6 parts by weight of hexadecylamine; The compound matrix is ​​composed of beet pulp, enoki mushroom residue, and king oyster mushroom residue in a weight ratio of 1.5:1-1.3:1-1.1; The composite activator is composed of potassium bicarbonate and triammonium phosphate in a weight ratio of 1:0.7-0.

8.

2. A method for preparing honeycomb activated carbon for adsorption-desorption catalytic combustion processes as described in claim 1, characterized in that, The preparation method includes the following steps: S10. Pre-treat the compound matrix to obtain the pre-treated material; S20. Mix the pretreated material and deionized water evenly and add the composite activator while stirring at a controlled speed to obtain mixture A. Transfer mixture A to a hydrothermal reactor and react at a controlled temperature. After the reaction is completed, cool to room temperature and filter. Dry the filter residue at a controlled temperature to obtain intermediate material A. S30. Mix cobalt nitrate hexahydrate, zirconium oxynitrate hydrate and platinum nitrate evenly to obtain mixture B. Mix hexadecylamine and anhydrous ethanol evenly to obtain mixture A. Add deionized water, polyvinylpyrrolidone and mixture A to mixture B in sequence and stir while controlling the temperature to obtain mixture B. Add intermediate material A to mixture B for soaking. After soaking, rinse and dry under controlled temperature to obtain intermediate material B. S40. Heat intermediate material B to pyrolyze, cool and wash to obtain intermediate material C. Extrude intermediate material C into shape in a honeycomb extruder, dry at controlled temperature to obtain honeycomb activated carbon.

3. The method for preparing honeycomb activated carbon for adsorption-desorption catalytic combustion processes according to claim 2, characterized in that, The preprocessing described in step S10 specifically includes: S11. Mix the compound matrix evenly, dry under controlled temperature, crush, sieve, and dry under controlled temperature again to obtain the sieved material; S12. Heat the sieved material to pyrolyze it, and cool it after pyrolysis to obtain the pretreated material.

4. The method for preparing honeycomb activated carbon for adsorption-desorption catalytic combustion processes according to claim 3, characterized in that, The temperature for temperature-controlled drying in step S11 is 60-65℃; the sieving is done through a 10-mesh sieve; the temperature for temperature-controlled drying is 100-105℃, and the time is 0.5-1h.

5. The method for preparing honeycomb activated carbon for adsorption-desorption catalytic combustion processes according to claim 3, characterized in that, The heating pyrolysis in step S12 specifically involves heating to 500-520℃ at a heating rate of 5℃ / min and pyrolyzing for 60-70 minutes, wherein the pyrolysis atmosphere is N2 at a rate of 100 mL / min; the cooling involves cooling to room temperature.

6. The method for preparing honeycomb activated carbon for adsorption-desorption catalytic combustion processes according to claim 3, characterized in that, The ratio of the pretreated material to deionized water in step S20 is 1g:10-12mL.

7. The method for preparing honeycomb activated carbon for adsorption-desorption catalytic combustion processes according to claim 1, characterized in that, In step S30, the ratio of mixture B to deionized water is 1g:20-25mL; the ratio of hexadecylamine to anhydrous ethanol is 1g:1.3-1.5mL.

8. The method for preparing honeycomb activated carbon for adsorption-desorption catalytic combustion processes according to claim 1, characterized in that, Step S40, cooling and washing, involves cooling to room temperature and washing with deionized water until neutral; the temperature for temperature-controlled drying is 100-105°C.

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