CN114956854A - Modified forsterite-based porous ceramic for carbon neutralization and preparation method thereof - Google Patents
Modified forsterite-based porous ceramic for carbon neutralization and preparation method thereof Download PDFInfo
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- CN114956854A CN114956854A CN202210596408.4A CN202210596408A CN114956854A CN 114956854 A CN114956854 A CN 114956854A CN 202210596408 A CN202210596408 A CN 202210596408A CN 114956854 A CN114956854 A CN 114956854A
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- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical class [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 239000000919 ceramic Substances 0.000 title claims abstract description 43
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 37
- 238000006386 neutralization reaction Methods 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 44
- 229910052839 forsterite Inorganic materials 0.000 claims abstract description 31
- 239000011858 nanopowder Substances 0.000 claims abstract description 16
- 239000002910 solid waste Substances 0.000 claims abstract description 11
- 239000003054 catalyst Substances 0.000 claims abstract description 10
- 229910010293 ceramic material Inorganic materials 0.000 claims description 37
- 238000010438 heat treatment Methods 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 17
- 238000002156 mixing Methods 0.000 claims description 16
- 238000007598 dipping method Methods 0.000 claims description 12
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 239000005011 phenolic resin Substances 0.000 claims description 11
- 229920001568 phenolic resin Polymers 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 9
- 239000002893 slag Substances 0.000 claims description 9
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000000748 compression moulding Methods 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000010304 firing Methods 0.000 claims description 4
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 claims description 4
- 238000002791 soaking Methods 0.000 claims description 4
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 claims description 3
- 229910001981 cobalt nitrate Inorganic materials 0.000 claims description 3
- 239000010881 fly ash Substances 0.000 claims description 3
- 238000005470 impregnation Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000002073 nanorod Substances 0.000 abstract description 6
- 238000001179 sorption measurement Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- 239000002041 carbon nanotube Substances 0.000 abstract description 3
- 229910021393 carbon nanotube Inorganic materials 0.000 abstract description 3
- 239000012620 biological material Substances 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 12
- 229910002092 carbon dioxide Inorganic materials 0.000 description 6
- 239000001569 carbon dioxide Substances 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 230000009919 sequestration Effects 0.000 description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 description 5
- 239000011707 mineral Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 241000282414 Homo sapiens Species 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910017970 MgO-SiO2 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002056 binary alloy Inorganic materials 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052609 olivine Inorganic materials 0.000 description 1
- 239000010450 olivine Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention provides a modified forsterite-based porous ceramic for carbon neutralization, which comprises the following components in parts by weight: 100 parts of forsterite powder, 5-15 parts of industrial solid waste powder and Mg 2 1-6 parts of Si nano powder. The invention also provides a preparation method of the modified forsterite-based porous ceramic for carbon neutralization. In the invention, under the synergistic action of the forsterite nanorods and the carbon nanotubes, the specific surface area and the mechanical property of the porous ceramic are synergistically improved, and the prepared forsterite-based porous ceramic has excellent carbon neutralization capacityAnd the composite material has the service performance, high porosity, good adsorption performance, good mechanical property and good oxidation resistance, can be used as a filtering material, a biological material or a catalyst carrier and the like, has high comprehensive utilization rate and has good economic benefit.
Description
Technical Field
The invention relates to the technical field of carbon dioxide neutralization, in particular to a modified forsterite-based porous ceramic for carbon neutralization and a preparation method thereof.
Background
With the continuous development of human industrial activities, the concentration of carbon dioxide in the atmosphere is gradually increased, so that the problems of extreme weather, sea level rise, species extinction, ecological system deterioration and the like occur in the world, and the future life safety of human beings is seriously threatened. To achieve this goal, there is a need to seek effective and low cost carbon abatement solutions and to actively advance carbon dioxide capture and sequestration (CCS) technologies. The carbon sequestration is the core of the technology and mainly comprises geological sequestration, ocean sequestration and mineral sequestration. Compared with the prior art, the mineral sealing and storing technology has the characteristics of environmental protection, safety, permanence and the like, and the carbon dioxide mineral sealing and storing raw material has rich sources, huge reserves and low price, and has large-scale carbon sealing and storing potential and good economic benefit.
Among common mineral sealing raw materials, forsterite is the only stable refractory phase in a MgO-SiO2 binary system, has higher theoretical carbon sealing amount, is rich in reserves in China, and is a mineral resource for carbon dioxide sealing with great potential. In the conventional carbon sequestration process, in order to increase the carbonization reaction rate, forsterite is usually processed into powder, and then modified and subjected to subsequent heat treatment to finally obtain the reactant powder containing carbonate. The accumulated cost of the reactant powder is increased due to the problems of subsequent storage, transportation, recycling and the like, and the process is not favorable for industrial popularization and application.
In order to improve the reutilization rate of a forsterite mineralization reaction product and reduce the industrial production cost, the forsterite can be prepared into porous ceramic with low density, high strength and high specific surface area, and the comprehensive utilization rate of resources is improved while the carbon neutralization rate of the forsterite is not reduced. According to the physical principle, the larger the surface area, the higher the adsorption efficiency, so to enhance the porous ceramic adsorption, the porosity is usually increased to further enhance the total surface area. However, the mechanical properties of the porous ceramic are also damaged while the porosity is increased, so that how to synergistically improve the porosity and the mechanical properties of the forsterite-based porous ceramic becomes a difficulty in current research and application.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a modified forsterite-based porous ceramic for carbon neutralization and a preparation method thereof, which solve the problem that the porosity and the mechanical property of the forsterite-based porous ceramic are difficult to be considered in the prior art.
According to an embodiment of the present invention, a modified forsterite-based porous ceramic for carbon neutralization, the raw material comprises the following components by weight:
100 parts of forsterite powder, 5-15 parts of industrial solid waste powder and Mg 2 1-6 parts of Si nano powder.
Preferably, the content of MgO in the forsterite powder is more than or equal to 32 wt%, and the particle size is 400-1000 meshes.
Preferably, the industrial solid waste powder is one or a mixture of more of ladle slag powder, fly ash powder and carbide slag powder, and the particle size is 600-800 meshes.
Preferably, said Mg 2 The purity of the Si nano powder is more than or equal to 40 wt%, and the particle size is 600-800 meshes.
The invention also provides a preparation method of the modified forsterite-based porous ceramic for carbon neutralization, which comprises the following steps:
s1, selecting forsterite powder, industrial solid waste powder and Mg according to the proportion 2 Adding deionized water accounting for 5-10% of the weight of the forsterite powder into the Si nano powder serving as a raw material, and uniformly mixing for 3-6 hours to obtain a mixture;
s2, compression molding the mixture obtained in the step S1 into a green body under the axial pressure of 30-100 MPa;
s3, placing the green body obtained in the step S2 in a high-temperature furnace to be calcined to obtain a calcined ceramic material;
s4, fully mixing 10-25 parts of phenolic resin, 0.5-3 parts of catalyst powder and 20-50 parts of absolute ethyl alcohol to obtain an impregnation solution;
s5, placing the fired ceramic material obtained in the step S3 in a dipping solution, taking out after soaking for a period of time, and drying to obtain a modified ceramic material;
and S6, placing the modified ceramic material obtained in the step S5 in a carbon-buried atmosphere, and firing at a high temperature to obtain the modified forsterite-based porous ceramic.
Further, in the step S3, the temperature of the green body is raised to 1100-1600 ℃ at a heating rate of 5-30 ℃/min in an air atmosphere, and then the temperature is maintained for 0.5-10 h to obtain the fired ceramic material.
Preferably, the solid content of the phenolic resin in the step S4 is 25-40 wt%.
Preferably, the catalyst in the step S4 is one or more of cobalt nitrate, nickel nitrate and ferric nitrate, and the purity of the catalyst is more than or equal to 99 wt%.
Further, in the step S5, the fired ceramic material is placed in a dipping solution, kept for 1-4 hours under the condition that the vacuum degree is less than or equal to 0.095MPa, and then taken out and dried at 70 ℃ for 6 hours to obtain the modified ceramic material.
Further, in the step S6, the temperature is raised to 800-1000 ℃ at a rate of 10-20 ℃/min in the high-temperature firing process, and then raised to 1200-1400 ℃ at a rate of 4-8 ℃/min, and the temperature is maintained for 1-4 h.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the low-cost industrial solid waste powder is introduced into the forsterite-based porous ceramic, so that on one hand, the cost is saved, and the industrial solid waste is recycled, on the other hand, the added industrial solid waste contains elements such as calcium, aluminum and silicon, so that the material sintering can be effectively promoted, the mechanical property of the material is enhanced, and finally, the metal cations can be used as reaction raw materials for carbon fixation, so that the effective carbon neutralization amount of the porous ceramic product is increased, and the carbonization reaction rate is accelerated;
2. the invention introduces single-phase Mg 2 The Si nano powder is used for generating the forsterite nano rods in situ in the high-temperature sintering process, and the irregularly produced nano rods and the ceramic matrix form a mutually connected porous network structure inside gaps, so that the structural strength can be enhanced, and the porosity can be further improved; in addition, carbon nanotubes can be generated on the surface of the forsterite porous ceramic by soaking in a phenolic resin impregnation solution containing a catalyst, so that the mechanical strength of the internal cavity of the forsterite-based porous ceramic is enhanced;
3. under the synergistic effect of the forsterite nanorods and the carbon nanotubes, the specific surface area and the mechanical property of the porous ceramic are synergistically improved, and the prepared forsterite-based porous ceramic has excellent carbon neutralization capacity and service performance, high porosity, better adsorption performance, mechanical property and oxidation resistance, can be used as a filter material, a biological material or a catalyst carrier and the like, has high comprehensive utilization rate and has good economic benefit.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to avoid repetition, the raw materials in this specific embodiment are described as follows, and are not described in detail in the embodiments:
the content of MgO in the forsterite powder is more than or equal to 32 wt%, and the particle size is 400-1000 meshes;
the particle size of the industrial solid waste powder is 600-800 meshes;
said Mg 2 The purity of the Si nano powder is more than or equal to 40 wt%, and the particle size is 600-800 meshes;
the solid content of the phenolic resin is 25-40 wt%.
The purity of the catalyst is more than or equal to 99 wt%.
Example 1:
a modified forsterite-based porous ceramic for carbon neutralization and a preparation method thereof, comprising the following steps:
s1, mixing 100 parts of forsterite powder, 5 parts of ladle slag powder and 1 part of Mg 2 Uniformly mixing the Si nano powder with 5 parts of deionized water for 3 hours to obtain a mixture;
s2, compression molding the mixture obtained in the step S1 into a green body under the axial pressure of 30 MPa;
s3, placing the green body obtained in the step S2 in a high-temperature furnace, heating to 1100 ℃ at a heating rate of 10 ℃/min in an air atmosphere, and preserving heat for 10 hours to obtain a fired ceramic material;
s4, mixing 12 parts of phenolic resin, 1.5 parts of ferric nitrate powder and 25 parts of absolute ethyl alcohol to obtain a dipping solution;
s5, placing the fired ceramic material obtained in the step S3 in a dipping solution, keeping the ceramic material for 2 hours under the condition that the vacuum degree is less than or equal to 0.095MPa, and drying the ceramic material for 6 hours at 70 ℃ to obtain a modified ceramic material;
s6, placing the modified ceramic material obtained in the step S5 in a carbon-embedded atmosphere, heating to 800 ℃ at a speed of 10 ℃/min, heating to 1300 ℃ at a speed of 4 ℃/min, and preserving heat for 2 hours to obtain the modified forsterite-based porous ceramic.
Example 2:
a modified forsterite-based porous ceramic for carbon neutralization and a preparation method thereof, comprising the following steps:
s1 mixing 100 parts of forsterite powder, 12 parts of fly ash powder and 5 parts of Mg 2 Uniformly mixing the Si nano powder with 9 parts of deionized water for 5 hours to obtain a mixture;
s2, compression molding the mixture obtained in the step S1 into a green body under the axial pressure of 55 MPa;
s3, placing the green body obtained in the step S2 in a high-temperature furnace, heating to 1350 ℃ at a heating rate of 15 ℃/min in an air atmosphere, and preserving heat for 3h to obtain a fired ceramic material;
s4, mixing 20 parts of phenolic resin, 1 part of cobalt nitrate powder and 20 parts of absolute ethyl alcohol to obtain a dipping solution;
s5, placing the fired ceramic material obtained in the step S3 in a dipping solution, keeping the ceramic material for 1 hour under the condition that the vacuum degree is less than or equal to 0.095MPa, and drying the ceramic material for 6 hours at 70 ℃ to obtain a modified ceramic material;
s6, placing the modified ceramic material obtained in the step S5 in a carbon-embedded atmosphere, heating to 1000 ℃ at a speed of 20 ℃/min, heating to 1250 ℃ at a speed of 5 ℃/min, and preserving heat for 3 hours to obtain the modified forsterite-based porous ceramic.
Example 3:
a modified forsterite-based porous ceramic for carbon neutralization and a preparation method thereof, comprising the following steps:
s1 mixing 100 parts of forsterite powder, 6 parts of carbide slag powder and 5 parts of Mg 2 Uniformly mixing the Si nano powder with 7 parts of deionized water for 4 hours to obtain a mixture;
s2, compression molding the mixture obtained in the step S1 into a green body under the axial pressure of 70 MPa;
s3, placing the green body obtained in the step S2 in a high-temperature furnace, heating to 1600 ℃ at a heating rate of 30 ℃/min in an air atmosphere, and preserving heat for 0.5h to obtain a fired ceramic material;
s4, mixing 25 parts of phenolic resin, 0.5 part of nickel nitrate powder and 30 parts of absolute ethyl alcohol to obtain a dipping solution;
s5, placing the fired ceramic material obtained in the step S3 in a dipping solution, keeping the temperature for 3 hours under the condition that the vacuum degree is less than or equal to 0.095MPa, and drying the ceramic material for 6 hours at 70 ℃ to obtain a modified ceramic material;
s6, placing the modified ceramic material obtained in the step S5 in a carbon-embedded atmosphere, heating to 950 ℃ at a speed of 15 ℃/min, heating to 1200 ℃ at a speed of 5 ℃/min, and preserving heat for 4 hours to prepare the modified forsterite-based porous ceramic.
Example 4:
a modified forsterite-based porous ceramic for carbon neutralization and a preparation method thereof comprise the following steps:
s1 mixing 100 parts of forsterite powder, 15 parts of ladle slag powder and 6 parts of Mg 2 Uniformly mixing the Si nano powder with 10 parts of deionized water for 6 hours to obtain a mixture;
s2, compression molding the mixture obtained in the step S1 into a green body under the axial pressure of 100 MPa;
s3, placing the green body obtained in the step S2 in a high-temperature furnace, heating to 1500 ℃ at a heating rate of 5 ℃/min in an air atmosphere, and keeping the temperature for 2h to obtain a fired ceramic material;
s4, mixing 10 parts of phenolic resin, a mixture of 1 part of nickel nitrate and 2 parts of ferric nitrate powder and 50 parts of absolute ethyl alcohol to obtain a dipping solution;
s5, placing the fired ceramic material obtained in the step S3 in a dipping solution, keeping the temperature for 4 hours under the condition that the vacuum degree is less than or equal to 0.095MPa, and drying the ceramic material for 6 hours at 70 ℃ to obtain a modified ceramic material;
s6, placing the modified ceramic material obtained in the step S5 in a carbon-embedded atmosphere, heating to 900 ℃ at a speed of 10 ℃/min, heating to 1400 ℃ at a speed of 8 ℃/min, and preserving heat for 1h to prepare the modified forsterite-based porous ceramic.
Comparative example 5
The remainder of this example was the same as example 4, except that ladle slag powder and Mg were not added to the composition 2 Si nano powder, and the soaking operation of the steps S4 and S5 was not performed.
The products obtained according to examples 1 to 4 and comparative example 5 were circulated 20 times inside the carbon absorption furnace at a temperature of 350 c and a humidity of 60%, and the carbon absorption rate and other parameters of the products of each example are shown in table 1.
| Porosity (%) | Compressive strength (MPa) | Carbon absorption (%) | |
| Example 1 | 71.5 | 7.53 | 25.4％ |
| Example 2 | 73.1 | 7.28 | 26.7％ |
| Example 3 | 72.7 | 7.14 | 26.2％ |
| Example 4 | 71.8 | 7.36 | 24.8％ |
| Comparative example 5 | 62.7 | 5.25 | 19.3％ |
TABLE 1
As can be seen from Table 1, examples 1 to 4 according to the present invention and comparative example 5 according to the present invention, in which ladle slag powder and Mg were added, were significantly different in both porosity and compressive strength parameters 2 The Si nano powder is also subjected to the infiltration operation of the phenolic resin, so that more pore structures are formed in the Si nano powder, and the porosity and the total surface area are improved. Accordingly, a higher carbon absorption rate is also obtained. In addition, due to the porous network structure formed by the forsterite nanorod and the carbon nanorod in the inner gap, the compressive strength of the forsterite-based porous ceramic is greatly improved, so that the forsterite is enabled to be formedThe olivine-based porous ceramic material can simultaneously have good carbon dioxide adsorption performance and excellent mechanical property, so as to be widely applied in various fields.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. A modified forsterite-based porous ceramic for carbon neutralization is characterized in that the raw materials comprise the following components in parts by weight:
100 parts of forsterite powder, 5-15 parts of industrial solid waste powder and Mg 2 1-6 parts of Si nano powder.
2. The modified forsterite-based porous ceramic for carbon neutralization of claim 1, wherein: the content of MgO in the forsterite powder is more than or equal to 32 wt%, and the particle size is 400-1000 meshes.
3. The modified forsterite-based porous ceramic for carbon neutralization of claim 1, wherein: the industrial solid waste powder is one or a mixture of more of ladle slag powder, fly ash powder and carbide slag powder, and the particle size is 600-800 meshes.
4. The modified forsterite-based porous ceramic for carbon neutralization of claim 1, wherein: the Mg 2 The purity of the Si nano powder is more than or equal to 40 wt%, and the particle size is 600-800 meshes.
5. A method of preparing a modified forsterite-based porous ceramic for carbon neutralization as claimed in claim 1, comprising the steps of:
s1, selecting according to proportionForsterite powder, industrial solid waste powder and Mg 2 Adding deionized water accounting for 5-10% of the weight of the forsterite powder into the Si nano powder serving as a raw material, and uniformly mixing for 3-6 hours to obtain a mixture;
s2, compression molding the mixture obtained in the step S1 into a green body under the axial pressure of 30-100 MPa;
s3, placing the green body obtained in the step S2 in a high-temperature furnace to be calcined to obtain a calcined ceramic material;
s4, fully mixing 10-25 parts of phenolic resin, 0.5-3 parts of catalyst powder and 20-50 parts of absolute ethyl alcohol to obtain an impregnation solution;
s5, placing the fired ceramic material obtained in the step S3 in a dipping solution, taking out after soaking for a period of time, and drying to obtain a modified ceramic material;
and S6, placing the modified ceramic material obtained in the step S5 in a carbon-buried atmosphere, and firing at a high temperature to obtain the modified forsterite-based porous ceramic.
6. The method of preparing a modified forsterite-based porous ceramic for carbon neutralization as claimed in claim 5, wherein: in the step S3, the green body is heated to 1100-1600 ℃ at a heating rate of 5-30 ℃/min in an air atmosphere, and then the temperature is maintained for 0.5-10 h to obtain the fired ceramic material.
7. The method of preparing a modified forsterite-based porous ceramic for carbon neutralization as claimed in claim 5, wherein: the solid content of the phenolic resin in the step S4 is 25-40 wt%.
8. The method of preparing a modified forsterite-based porous ceramic for carbon neutralization as claimed in claim 5, wherein: the catalyst in the step S4 is one or a mixture of more of cobalt nitrate, nickel nitrate and ferric nitrate, and the purity of the catalyst is more than or equal to 99 wt%.
9. The method of preparing a modified forsterite-based porous ceramic for carbon neutralization as claimed in claim 5, wherein: in the step S5, the fired ceramic material is placed in a dipping solution, kept for 1-4 hours under the condition that the vacuum degree is less than or equal to 0.095MPa, and then taken out and dried for 6 hours at 70 ℃ to obtain the modified ceramic material.
10. The method of preparing a modified forsterite-based porous ceramic for carbon neutralization as claimed in claim 5, wherein: in the step S6, the temperature is raised to 800-1000 ℃ at a rate of 10-20 ℃/min in the high-temperature firing process, and then raised to 1200-1400 ℃ at a rate of 4-8 ℃/min, and the temperature is maintained for 1-4 h.
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