Porous material with desulfurization and denitrification functions and preparation method and application thereof

Abstract

The present application relates to the raw material purification field, disclose a kind of porous material with desulfurization and denitrification function and its preparation method and application.The porous material of the present application has excellent desulfurization and denitrification performance, and can be prepared by one-step synthesis method.

Description

Technical Field

[0001] This invention relates to the field of raw material purification, specifically to porous materials with desulfurization and denitrification functions, their preparation methods, and applications. Background Technology

[0002] In recent years, with increasing demands for energy conservation and environmental protection, as well as higher requirements for oil quality, refining enterprises have accelerated research into desulfurization and denitrification technologies while upgrading their equipment and oil products. SO₂ is generated from the combustion of sulfur and nitrogen compounds in naphtha. x and NO x Not only does it contribute to acid rain formation, but it also promotes particulate matter emissions. Current desulfurization and denitrification technologies are mainly divided into two types: reaction and adsorption. While reactive desulfurization and denitrification have the advantage of high yield, the entire process is lengthy, energy-intensive, and results in significant octane number loss. Adsorption desulfurization and denitrification utilize the complexation, van der Waals forces, or chemical reactions between sulfur or nitrogen and the adsorbent for removal. It has advantages such as high removal depth, easy regeneration, low cost, and ease of operation. However, it still has problems in adsorption performance (such as uneven dispersion of active components, easy aggregation, and poor ammonia nitrogen removal).

[0003] Therefore, it is of great significance to develop a porous desulfurization and denitrification material with good adsorption performance, simple preparation process, and environmental friendliness. Summary of the Invention

[0004] The purpose of this invention is to overcome the problems existing in the prior art and to provide porous materials with desulfurization and denitrification functions, their preparation methods and applications.

[0005] To achieve the above objectives, the first aspect of the present invention provides a method for preparing a porous material with desulfurization and denitrification functions. The method includes: hydrothermal crystallization of a crystallization raw material containing a silicon source, an aluminum source and an active metal source, wherein the weight ratio of the silicon source (calculated as SiO2), the aluminum source (calculated as Al2O3), and the active metal source (calculated as metal oxide) is 1:0.001-2.5:0.01-0.3, and the active metal source is selected from at least one of Group VIII metal sources, Group IB metal sources and Group IIB metal sources.

[0006] A second aspect of the present invention provides a porous material with desulfurization and denitrification functions.

[0007] A third aspect of the present invention provides a method for desulfurization and denitrification, the method comprising: contacting the material to be desulfurized and denitrified with the porous material as described above.

[0008] The fourth aspect of the present invention provides the application of the porous materials described above in desulfurization and denitrification.

[0009] Through the above technical solution, the porous material of this invention can achieve desulfurization and denitrification through adsorption, with high desulfurization and denitrification rates, good diffusion performance, and low aggregation. Compared with traditional adsorbents, this one-step synthesis method avoids complex post-processing and saves significant manpower and resources. The preparation process of this invention is simple, with low active component content, easily controllable composition, and easy scale-up. Attached Figure Description

[0010] Figure 1 This is a scanning electron microscope image of a desulfurization and denitrification dual-function porous material obtained according to a preferred embodiment of the present invention;

[0011] Figure 2 The image shows the XRD pattern of a desulfurization and denitrification dual-function porous material obtained according to a preferred embodiment of the present invention. Detailed Implementation

[0012] The endpoints and any values ​​of the ranges disclosed herein are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of the various ranges, the endpoint values ​​of the various ranges and individual point values, and individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed herein.

[0013] This invention provides a method for preparing a porous material with desulfurization and denitrification functions. The method is characterized by comprising: hydrothermal crystallization of a crystallization raw material containing a silicon source, an aluminum source and an active metal source, wherein the weight ratio of the silicon source (calculated as SiO2), the aluminum source (calculated as Al2O3), and the active metal source (calculated as metal oxide) is 1:0.001-2.5:0.01-0.3.

[0014] Preferably, the weight ratio of aluminum source (calculated as Al2O3) to silicon source (calculated as SiO2) is 0.005-2, such as 0.005, 0.01, 0.02, 0.05, 0.07, 0.08, 0.09, 0.1, 0.5, 1, 1.5, 2 or any value or range between the above values.

[0015] Preferably, the weight ratio of the active metal source (calculated as metal oxide) to the silicon source (calculated as SiO2) is 0.02-0.25, such as 0.02, 0.05, 0.09, 0.1, 0.15, 0.2, 0.22, 0.23, 0.24, 0.25 or any value or range between the above values.

[0016] In this invention, the silicon source can be selected from substances commonly found in the art that can provide silicon, for example, the silicon source can be selected from at least one of silicon oxide, silicic acid, silicates, silicate esters, and siloxanes. Preferably, the silicon source is selected from at least one of silica sol, silica fume, tetramethyl orthosilicate, tetraethyl orthosilicate, tetrapropyl orthosilicate, tetrabutyl orthosilicate, and dimethylsiloxane.

[0017] In this invention, the aluminum source can be selected from substances commonly found in the art that can provide aluminum, such as aluminum alkoxides, aluminum oxide, aluminum hydroxide, aluminum salts, and aluminates. Preferably, the aluminum source is selected from at least one of aluminum isopropoxide, boehmite (AlOOH·nH2O, n = 0.08-0.62), aluminum oxide (Al2O3), aluminum hydroxide, aluminum nitrate, aluminum chloride, aluminum sulfate, and sodium aluminate.

[0018] In this invention, the active metal source can be selected from substances commonly used in the art that can provide at least one of Group VIII, Group IB, and Group IIB metal elements (especially at least one of Cu, Zn, and Fe), for example, it can be selected from metal salts. To obtain porous materials with superior performance, the active metal source is selected from at least one of copper, zinc, and iron sources. The copper, zinc, and iron sources are substances that can provide copper, zinc, and iron elements, respectively. The copper source can be selected from at least one copper salt (especially inorganic copper salts). The zinc source can be selected from at least one zinc salt (especially inorganic zinc salts). The iron source can be selected from at least one iron salt (especially inorganic iron salts). More preferably, the active metal source is selected from at least one of copper nitrate, copper carbonate, and zinc nitrate.

[0019] In this invention, to obtain porous materials with better desulfurization and denitrification effects, the crystallization raw material may also contain an alkali source, such as OH... - The weight ratio of the alkali source to the silicon source (based on SiO2) is less than or equal to 3, preferably 0.01-2.5, such as 0.01, 0.02, 0.05, 0.1, 0.2, 0.25, 0.3, 0.5, 1, 1.5, 2, 2.5, or any value or range between the above. The alkali source can be selected from substances commonly found in the art capable of hydrolyzing to produce hydroxyl groups. Preferably, the alkali source is selected from alkali metal hydroxides and / or ammonia, more preferably at least one of sodium hydroxide, potassium hydroxide, and ammonia. In this invention, ammonia is typically used as ammonia solution.

[0020] In this invention, the amount of water used in the crystallization raw material is such that the weight ratio of water to silicon source (based on SiO2) is less than or equal to 300, preferably 0.001-280, such as 0.001, 0.01, 0.1, 1, 10, 12, 15, 20, 100, 200, 250, 280 or any value or range between the above values.

[0021] In this invention, to obtain a porous material with better desulfurization and denitrification effects, the crystallization raw material preferably also contains additives. The weight ratio of the additives to the silicon source (based on SiO2) is less than or equal to 0.1, preferably 0.01-0.1, more preferably 0.02-0.08, such as 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, or any value or range between the above values. The additives can be selected from at least one of polyoxyethylene-polyoxypropylene-polyoxyethylene triblock copolymer, polyethylene glycol, and long-chain alkyltrimethylammonium halide. To obtain a porous material with better desulfurization and denitrification effects, preferably, the additives are selected from polyoxyethylene-polyoxypropylene-polyoxyethylene triblock copolymer (preferably with an average molecular weight between 1500 and 12000) with a structure such as CH3(CH2). n N + (CH3)3X - At least one of the long-chain alkyl trimethyl amine halides shown (n is preferably an integer from 8 to 18; X represents a halogen, preferably Cl or Br).

[0022] In a preferred embodiment of the present invention, the conditions for hydrothermal crystallization include a temperature of 70-220°C, preferably 90-200°C, and more preferably 140-160°C.

[0023] In a preferred embodiment of the present invention, the hydrothermal crystallization conditions further include a time of 0.1-7 days, preferably 0.2-5 days, and more preferably 1-2 days.

[0024] In this invention, the method may further include aging the crystallization raw material before hydrothermal crystallization. The aging conditions include: a temperature of 15-45℃ (room temperature), more preferably 20-30℃, and a time of 8-20h, more preferably 10-15h.

[0025] In order to obtain a stable porous material product, the method may further include drying and calcining the hydrothermally crystallized product sequentially after hydrothermal crystallization.

[0026] More preferably, the drying conditions include a temperature of 90-150°C and a time of 11-30 hours.

[0027] More preferably, the calcination conditions include a temperature of 200-400℃, more preferably 240-260℃. Even more preferably, the calcination conditions further include a time of 2-6 hours, more preferably 3.5-4.5 hours.

[0028] The present invention also provides a porous material with desulfurization and denitrification functions, characterized in that the porous material is prepared by the preparation method described above;

[0029] Alternatively, the porous material comprises Si, Al, and Cu, with the weight ratio of Si (based on SiO2), Al (based on Al2O3), and Cu (based on CuO) being 1:0.001-2.3:0.01-0.4. The weight ratio of Al (based on Al2O3) to Si (based on SiO2) can be 0.0001, 0.01, 0.02, 0.1, 0.12, 0.15, 0.5, 1, 1.5, 2, 2.3, or any value or range between these values. The weight ratio of Cu (based on CuO) to Si (based on SiO2) can be 0.02, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, or any value or range between these values.

[0030] In the porous material of the present invention, Si, Al and Cu exist in the form of oxides.

[0031] Preferably, the XRD pattern of the porous material of the present invention has characteristic peaks at 2θ of 35.5±0.2 and 38.6±0.2.

[0032] Preferably, the porous material of the present invention is in the form of sheets. Sheet-shaped porous materials have better dispersion properties.

[0033] Preferably, the mesopore specific surface area of ​​the porous material of the present invention is 110-440 m². 2 / g, more preferably 300-360m 2 / g.

[0034] Preferably, the total pore volume of the porous material of the present invention is 0.15-0.6 cm³. 3 / g, more preferably 0.45-0.55cm 3 / g.

[0035] Preferably, the mesopore volume of the porous material of the present invention is 0.1-0.5 cm³. 3 / g, more preferably 0.35-0.47cm 3 / g.

[0036] Preferably, the average pore size of the porous material of the present invention is 5-25 nm, more preferably 6-9 nm.

[0037] The present invention also provides a method for desulfurization and denitrification, characterized in that the method includes: contacting the material to be desulfurized and denitrified with the porous material as described above.

[0038] There are no special requirements for the amount of porous material used. The adsorption capacity of sulfur and nitrogen per 100g of porous material is ≥10g. Therefore, when using the porous material for desulfurization and denitrification, those skilled in the art can determine the amount of porous material based on the adsorption capacity. Generally, the amount of porous material used can be 2-500g per cubic meter of material.

[0039] The porous material of the present invention is applicable to various common materials containing S and N, wherein the content of S in the material is ≤100g / L, preferably 2-90g / L, and the content of N is ≤100g / L, preferably 2-90g / L.

[0040] The porous material of the present invention is particularly suitable for removing sulfur (including hydrogen sulfide and various organic forms of sulfur) and nitrogen (especially ammonia nitrogen) from organic liquids (such as naphtha). Preferably, the material is an oil or gas containing sulfur and / or nitrogen.

[0041] The present invention does not have any special requirements for the contact conditions. In a preferred embodiment, the contact conditions include: a temperature of 15-35°C (room temperature) and a time of 0.3-1h.

[0042] Finally, the present invention also provides the application of the porous materials described above in desulfurization and denitrification.

[0043] The present invention will be described in detail below through examples. The average molecular weight of the polyoxyethylene-polyoxypropylene-polyoxyethylene (P123, CAS NO. 9003-11-6) is 5800, and the long-chain alkyl trimethylamine halide is CH3(CH2). 15 N + (CH3)3Cl - The room temperature is approximately 25°C.

[0044] Example 1

[0045] Mix 0.3g of aluminum hydroxide, sodium hydroxide, copper nitrate, water and P123 evenly, then add tetraethyl orthosilicate, stir the prepared material at room temperature for 4 hours, and let it stand at 25°C for 12 hours to age; put the aged material into a crystallization kettle with a polytetrafluoroethylene liner and crystallize at 150°C for 1 day.

[0046] The weight ratios of each raw material are such that: R1 / SiO2 = 0.23, Al2O3 / SiO2 = 0.08; H2O / SiO2 = 11; CuO / SiO2 = 0.23; R2 / SiO2 = 0.08, where R1 and R2 represent OH... -And P123.

[0047] The obtained crystallized product was washed with water, centrifuged, and dried at 110℃ for 11 h to obtain a solid sample. Then, it was calcined at 250℃ for 4 h to obtain a porous material. Elemental analysis (X-ray fluorescence method, referring to GB / T 30905-2014, the same below) showed that the elemental composition of the porous material was: SiO2 accounted for 72% by weight, Al2O3 accounted for 8% by weight, and CuO accounted for 20% by weight.

[0048] Example 2

[0049] Mix 0.5g aluminum isopropoxide, potassium hydroxide, copper nitrate, water and long-chain alkyl trimethyl ammonium halide evenly, then add silica sol, stir the prepared material at room temperature for 5 hours, and let it stand at 40°C for 8 hours to age; put the aged material into a crystallization kettle with a polytetrafluoroethylene liner and crystallize at 150°C for 2 days.

[0050] The weight ratios of each raw material are such that: R1 / SiO2 = 0.5, Al2O3 / SiO2 = 0.02; H2O / SiO2 = 100; CuO / SiO2 = 0.15; R2 / SiO2 = 0.05, where R1 and R2 represent OH... - And long-chain alkyl trimethylamine halides.

[0051] The obtained crystallized product was washed with water, centrifuged, and dried at 110℃ for 20h to obtain a solid sample. Then, it was calcined at 300℃ for 3h to obtain a porous material. Elemental analysis showed that the elemental composition of the porous material was: SiO2 accounted for 85% by weight, Al2O3 accounted for 2% by weight, and CuO accounted for 13% by weight.

[0052] Example 3

[0053] Mix 1g of aluminum nitrate, ammonia, copper carbonate, water and P123 evenly, then add dimethylsiloxane (purchased from Sinopharm Group), stir the prepared material at room temperature for 7 hours, and let it stand at 45°C for 20 hours to age; put the aged material into a crystallization kettle with a polytetrafluoroethylene liner and crystallize at 200°C for 5 days.

[0054] The weight ratios of each raw material are such that: R1 / SiO2 = 2, Al2O3 / SiO2 = 1.5; H2O / SiO2 = 200; CuO / SiO2 = 0.2; R2 / SiO2 = 0.08, where R1 and R2 represent OH... - And P123.

[0055] The obtained crystallized product was washed with water, centrifuged, and dried at 110℃ for 15 h to obtain a solid sample. Then, it was calcined at 350℃ for 3.5 h to obtain a porous material. Elemental analysis showed that the elemental composition of the porous material was: SiO2 accounted for 40% by weight, Al2O3 accounted for 45% by weight, and CuO accounted for 15% by weight.

[0056] Example 4

[0057] Porous materials were prepared according to the method of Example 1, except that polyethylene oxide-polypropylene oxide-polyethylene oxide was replaced with polyethylene glycol.

[0058] Example 5

[0059] Porous materials were prepared according to the method of Example 1, except that polyoxyethylene-polyoxypropylene-polyoxyethylene was not used.

[0060] Example 6

[0061] Porous materials were prepared according to the method of Example 1, except that sodium hydroxide was not used.

[0062] Example 7

[0063] Porous materials were prepared according to the method of Example 1, except that copper nitrate was replaced with zinc nitrate.

[0064] Example 8

[0065] Porous materials were prepared according to the method of Example 1, except that copper nitrate was replaced with iron nitrate.

[0066] Comparative Example 1

[0067] Porous materials were prepared according to the method of Example 1, except that copper nitrate was replaced with manganese nitrate.

[0068] Comparative Example 2

[0069] The porous material is prepared using the traditional two-step calcination method, and the specific steps are as follows:

[0070] 0.3 g of aluminum hydroxide, sodium hydroxide, water, and polyoxyethylene-polyoxypropylene-polyoxyethylene were mixed evenly, and then tetraethyl orthosilicate was added. The prepared material was stirred at room temperature for 4 hours and aged at 25°C for 12 hours. The aged material was placed in a crystallization kettle with a polytetrafluoroethylene liner and crystallized at 150°C for 1 day. The resulting crystallized product was washed with water, centrifuged, dried at 110°C for 11 hours, and calcined at 250°C for 4 hours to obtain a carrier. The carrier was impregnated in an equal volume of copper nitrate aqueous solution, dried at 110°C for 11 hours, and calcined at 250°C for 4 hours to obtain a porous material.

[0071] The weight and amount of each raw material are the same as in Example 1.

[0072] Test Example 1

[0073] The morphology and structure of the porous materials obtained in the above embodiments and comparative examples were analyzed and characterized, and the results are shown in Table 1.

[0074] The morphology of the material was observed using a scanning electron microscope (SEM, model S-4800 field emission scanning electron microscope), and the XRD pattern of the porous material was determined using an X'Pert PRO X-ray diffractometer. The mesopore specific surface area, total pore volume, mesopore volume, and average pore size of the porous material were measured using N2 adsorption / desorption curves. The SEM image of the porous material obtained in Example 1 is shown below. Figure 1 As shown; the XRD pattern of the material obtained in Example 1 is as follows. Figure 2 As shown. Although not shown, the SEM images and XRD patterns of other embodiments are similar to those of the embodiments shown. Figure 1 resemblance.

[0075] Table 1

[0076]

[0077]

[0078] Test Example 2

[0079] The porous materials obtained using the above examples and comparative examples were used for desulfurization and denitrification. The specific steps were as follows: the porous materials were placed in naphtha containing 30 g / L hydrogen sulfide, 20 g / L organic sulfides and 30 g / L ammonia nitrogen (the amount of the porous materials was 170 g per cubic meter of naphtha), stirred at room temperature for 30 minutes, and the content of sulfur and nitrogen elements in the naphtha before and after adsorption was detected by a sulfur and nitrogen analyzer. The desulfurization rate and denitrification rate were calculated.

[0080] The results are shown in Table 2.

[0081] Table 2

[0082]

[0083]

[0084] As can be seen from the results in Table 1, the porous material of the present invention achieves similar or even higher desulfurization and denitrification rates compared to the porous material obtained by the traditional two-step method, and the preparation process is simpler. Furthermore, the embodiments using the preferred embodiments of the present invention demonstrate significantly better desulfurization and denitrification effects.

[0085] The preferred embodiments of the present invention have been described in detail above; however, the present invention is not limited thereto. Within the scope of the inventive concept, various simple modifications can be made to the technical solutions of the present invention, including combinations of various technical features in any other suitable manner. These simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A method for preparing a porous material with desulfurization and denitrification functions, characterized in that, The preparation method includes: hydrothermal crystallization of a crystallization raw material containing a silicon source, an aluminum source and an active metal source, wherein the weight ratio of the silicon source (calculated as SiO2), the aluminum source (calculated as Al2O3), and the active metal source (calculated as metal oxide) is 1:0.001-2.5:0.01-0.3, and the active metal source is selected from at least one of group VIII metal sources, group IB metal sources and group IIB metal sources; The method also includes aging the crystallization raw materials before hydrothermal crystallization; The crystallization raw material also contains additives, which are selected from at least one of polyoxyethylene-polyoxypropylene-polyoxyethylene triblock copolymer, polyethylene glycol, and long-chain alkyltrimethylammonium halide.

2. The preparation method according to claim 1, wherein, The weight ratio of silicon source (SiO2), aluminum source (Al2O3), and active metal source (metal oxide) is 1:0.005-2:0.02-0.

25.

3. The preparation method according to claim 1 or 2, wherein, The silicon source is selected from at least one of silicon oxide, silicic acid, silicates, silicate esters and siloxanes; And / or, the aluminum source is selected from at least one of aluminum alkoxides, aluminum oxide, aluminum hydroxide, aluminum salts, and aluminates; And / or, the active metal source is selected from at least one of copper, zinc and iron sources.

4. The preparation method according to claim 3, wherein, The silicon source is selected from at least one of silica sol, silica, tetramethyl orthosilicate, tetraethyl orthosilicate, tetrapropyl orthosilicate, tetrabutyl orthosilicate, and dimethylsiloxane. And / or, the aluminum source is selected from at least one of aluminum isopropoxide, boehmite, alumina, aluminum hydroxide, aluminum nitrate, aluminum chloride, aluminum sulfate, and sodium aluminate; And / or, the active metal source is selected from at least one of copper nitrate, copper carbonate, and zinc nitrate.

5. The preparation method according to claim 1 or 2, wherein, The crystallization raw material also contains an alkali source, namely OH. - The weight ratio of the alkali source to the silicon source (calculated using SiO2) is less than or equal to 3.

6. The preparation method according to claim 1 or 2, wherein, The crystallization raw material also contains an alkali source, namely OH. - The weight ratio of the alkali source to the silicon source (SiO2) is 0.01-2.

5.

7. The preparation method according to claim 5, wherein, The alkali source is selected from alkali metal hydroxides and / or ammonia.

8. The preparation method according to claim 7, wherein, The alkaline source is at least one of sodium hydroxide, potassium hydroxide, and ammonia.

9. The preparation method according to claim 1 or 2, wherein, The amount of water used in the crystallization raw material is such that the weight ratio of water to silicon source (based on SiO2) is less than or equal to 300.

10. The preparation method according to claim 1 or 2, wherein, The amount of water used in the crystallization raw material is such that the weight ratio of water to silicon source (based on SiO2) is 0.001-280.

11. The preparation method according to claim 1 or 2, wherein, The weight ratio of the additive to the silicon source (based on SiO2) is less than or equal to 0.1; the additive is selected from polyoxyethylene-polyoxypropylene-polyoxyethylene triblock copolymers with a structure such as CH3(CH2). n N + (CH3)3X - At least one of the long-chain alkyl trimethyl halogenated ammonium halides shown.

12. The preparation method according to claim 11, wherein, The weight ratio of the additive to the silicon source (based on SiO2) is 0.01-0.1; the additive is selected from polyoxyethylene-polyoxypropylene-polyoxyethylene triblock copolymers with a structure such as CH3(CH2). n N + (CH3)3X - At least one of the long-chain alkyl trimethyl halogenated ammonium halides shown.

13. The preparation method according to claim 11, wherein, The weight ratio of the additive to the silicon source (based on SiO2) is 0.02-0.08; the additive is selected from polyoxyethylene-polyoxypropylene-polyoxyethylene triblock copolymers with a structure such as CH3(CH2). n N + (CH3)3X - At least one of the long-chain alkyl trimethyl halogenated ammonium halides shown.

14. The preparation method according to claim 11, wherein, The average molecular weight of the polyoxyethylene-polyoxypropylene-polyoxyethylene triblock copolymer is between 1,500 and 12,000. And / or, an integer n = 8-18; And / or, X is Cl or Br.

15. The preparation method according to claim 1 or 2, wherein, The conditions for hydrothermal crystallization include: a temperature of 70-220℃ and a time of 0.1-7 days.

16. The preparation method according to claim 15, wherein, The conditions for hydrothermal crystallization include: a temperature of 90-200℃ and a time of 0.2-5 days.

17. The preparation method according to claim 1, wherein, The aging conditions include a temperature of 15-45℃ and a time of 8-20 hours.

18. The preparation method according to claim 1 or 2, wherein, The method further includes drying and calcining the hydrothermal crystallization product sequentially after hydrothermal crystallization.

19. The preparation method according to claim 18, wherein, The drying conditions include a temperature of 90-150℃ and a time of 11-30 hours.

20. The preparation method according to claim 18, wherein, The roasting conditions include: a temperature of 200-400℃ and a time of 2-6 hours.

21. A porous material with desulfurization and denitrification functions, characterized in that, The porous material is prepared by the preparation method described in any one of claims 1-20.

22. The porous material according to claim 21, wherein, The XRD pattern of the porous material has characteristic peaks at 2θ of 35.5±0.2 and 38.6±0.

2. And / or, the porous material is in the form of sheets; And / or, the mesoporous specific surface area of ​​the porous material is 110-440 m². 2 / g; And / or, the total pore volume of the porous material is 0.15-0.6 cm³. 3 / g; And / or, the mesopore volume of the porous material is 0.1-0.5 cm³. 3 / g; And / or, the average pore size of the porous material is 5-25 nm.

23. A method for desulfurization and denitrification, characterized in that, The method includes contacting the material to be desulfurized and denitrified with the porous material as described in claim 21 or 22.

24. The method according to claim 23, wherein, The amount of the porous material used is 2-500g per cubic meter of material; And / or, the content of S in the material is ≤100g / L, and the content of N is ≤100g / L; And / or, the material is an oil or gas containing sulfur and / or nitrogen; And / or, the contact conditions include: a temperature of 15-35°C and a time of 0.3-1h.

25. The application of the porous material according to claim 21 or 22 in desulfurization and denitrification.

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