CN116571220A - Carbon dioxide trapping material based on waste PET (polyethylene terephthalate) and metal organic framework material composite fly ash and preparation method thereof - Google Patents
Carbon dioxide trapping material based on waste PET (polyethylene terephthalate) and metal organic framework material composite fly ash and preparation method thereof Download PDFInfo
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 90
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 45
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 45
- 239000010881 fly ash Substances 0.000 title claims abstract description 45
- 239000000463 material Substances 0.000 title claims abstract description 44
- 239000002699 waste material Substances 0.000 title claims abstract description 29
- 239000012621 metal-organic framework Substances 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000002131 composite material Substances 0.000 title claims abstract description 10
- -1 polyethylene terephthalate Polymers 0.000 title claims abstract description 8
- 229920000139 polyethylene terephthalate Polymers 0.000 title abstract description 30
- 239000005020 polyethylene terephthalate Substances 0.000 title abstract description 30
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 12
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 9
- 238000001179 sorption measurement Methods 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims description 31
- 238000002156 mixing Methods 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 239000000047 product Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000008367 deionised water Substances 0.000 claims description 9
- 229910021641 deionized water Inorganic materials 0.000 claims description 9
- 230000003213 activating effect Effects 0.000 claims description 8
- 239000012190 activator Substances 0.000 claims description 8
- 150000001768 cations Chemical class 0.000 claims description 8
- 239000002244 precipitate Substances 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 5
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 5
- 229910044991 metal oxide Inorganic materials 0.000 claims description 5
- 150000004706 metal oxides Chemical class 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 150000002736 metal compounds Chemical class 0.000 claims description 4
- 239000004570 mortar (masonry) Substances 0.000 claims description 4
- 229910007926 ZrCl Inorganic materials 0.000 claims description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract description 6
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 20
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000002910 solid waste Substances 0.000 description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 230000007062 hydrolysis Effects 0.000 description 6
- 238000006460 hydrolysis reaction Methods 0.000 description 6
- 239000004033 plastic Substances 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 6
- 238000004064 recycling Methods 0.000 description 6
- 239000013206 MIL-53 Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 239000003513 alkali Substances 0.000 description 4
- 239000003245 coal Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000013110 organic ligand Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 230000002194 synthesizing effect Effects 0.000 description 3
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 238000010668 complexation reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000009919 sequestration Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/223—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material containing metals, e.g. organo-metallic compounds, coordination complexes
- B01J20/226—Coordination polymers, e.g. metal-organic frameworks [MOF], zeolitic imidazolate frameworks [ZIF]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G83/00—Macromolecular compounds not provided for in groups C08G2/00 - C08G81/00
- C08G83/008—Supramolecular polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a carbon dioxide trapping material based on waste PET (polyethylene terephthalate) metal organic framework material composite fly ash and a preparation method thereof, wherein the carbon dioxide trapping material is prepared by taking sodium carbonate and the fly ash as raw materials by adopting a one-step method, and the carbon dioxide adsorption capacity is 1.20mmol/g under the conditions of normal temperature and normal pressure.
Description
Technical Field
The invention belongs to the field of solid waste recycling, and particularly relates to a carbon dioxide trapping material based on waste PET (polyethylene terephthalate) and a preparation method thereof.
Background
Since the 50 s of the 20 th century, plastic products have been widely used due to their convenience in use, excellent performance, and the like. However, the plastic has durability and decomposition resistance, and the waste plastic in nature needs 200-500 years to be completely degraded, and the plastic has large usage amount, short average service period (40% of the plastic has a service period of less than one year) and improper post-treatment mode, so that serious environmental pollution and resource waste are caused, and the natural environment and human living environment are gradually threatened; heretofore, the methods of recycling waste PET have been mainly three of mechanical recycling, biological recycling and chemical recycling, the most common methods being chemical recycling, including grinding and melting treatment of PET to obtain PET particles; compared with physical recovery, biological recovery and chemical recovery can realize high-value utilization of waste PET. Hydrolysis is a chemical recovery process that includes depolymerizing PET to terephthalic acid (TPA) and Ethylene Glycol (EG); sulfuric acid and sodium hydroxide can promote hydrolysis of waste PET, and terephthalic acid (TPA) is widely used in the synthesis of MOFs due to its beneficial complexation properties.
The fly ash is fine ash captured from flue gas through dust removal equipment, is main solid waste generated by a coal-fired thermal power plant, and has the advantages that along with the rapid development of economy in China, the power generation demand is increased increasingly, the discharge amount of the fly ash is also increased rapidly, and a large amount of fly ash is accumulated, so that environmental pollution and resource waste are caused; the fly ash is one of the three industrial wastes, has extremely high utilization value due to the huge yield, abundant components and unique physicochemical properties, and can realize harmless treatment of solid wastes and relieve environmental pollution caused by accumulation of the fly ash.
Carbon dioxide, a greenhouse gas, is a major cause of global warming. With the increase of the concentration of carbon dioxide in the atmosphere, the normal relationship of infrared radiation between the atmosphere and the ground is destroyed, the infrared heat radiation released by the earth is absorbed, the heat loss of the earth is prevented, and the average temperature of the earth is increased.
Carbon capture and sequestration technology (CCS) is considered to be one of the most promising solutions to date to slow down climate change. The combustion of fossil fuels such as coal, petroleum, natural gas and the like, and the production and processing processes of coal, petroleum and the like are main sources of carbon dioxide emission. Therefore, capturing and sequestering carbon dioxide under conditions of normal temperature and normal pressure is an important point of research.
In the prior art, the preparation of metal organic framework Materials (MOFs) as carbon dioxide trapping materials by using fly ash as a raw material can be realized by the following steps: step 1: mixing the fly ash with sulfuric acid, stirring and heating for 24 hours at 230 ℃; step 2: raising the temperature to 340 ℃ or above, and completely evaporating sulfuric acid; step 3: after evaporation, the fly ash is heated for 30min again to be completely dried; step 4: mixing the obtained product with water, stirring at 90deg.C for 30min, and obtaining aluminum in the form of aluminum sulfate; step 5: filtering the mixture to obtain a solution A, and using the obtained filtrate for synthesizing MOF; step 6: adding fumaric acid, sodium hydroxide and deionized water into another beaker to obtain a solution B; step 7: heating the solution A and the solution B at 60 ℃ for 1h respectively; step 8: mixing A, B solutions, stirring and heating at 60deg.C for 2 hr; step 9: the resulting product was filtered, washed with deionized water, and dried at 105 ℃ for 24h to give MOF. However, the prior art has the defects that the aluminum ions in the fly ash are leached by sulfuric acid and then react with the organic ligand, the technical process is complex, and acid pollution and alkali pollution can be caused to the environment because a large amount of acid and alkali are used.
Disclosure of Invention
In order to overcome the defects, the invention aims to provide a carbon dioxide trapping material based on waste PET (polyethylene terephthalate) and metal organic framework material composite fly ash, a preparation method thereof and application of the prepared carbon dioxide trapping material in carbon dioxide trapping.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the preparation method of the carbon dioxide trapping material based on the waste PET metal organic framework material composite fly ash comprises the following steps:
1) Fully mixing sodium carbonate with the fly ash to obtain a mixture I;
2) Adding a metal compound into the mixture I in the step 1), fully grinding the mixture by using a mortar, and uniformly mixing the mixture to obtain a mixture II containing metal cations;
3) Transferring the mixture II in the step 2) into a tube furnace, and activating for 90min at 890 ℃ to obtain an activator;
4) Adding the waste PET and the activator in the step 3) into deionized water, and uniformly mixing to obtain a mixture III;
5) Transferring the mixture III in the step 4) into a 100mL hydrothermal reaction kettle, and reacting for 72h at 220 ℃ to obtain a product I;
6) Washing the product obtained in the step 5) with DMF for 3 times, washing with absolute ethyl alcohol for 5 times, and centrifuging to obtain a precipitate;
7) Drying the precipitate in the step 6) for 24 hours at 100 ℃ and then activating for 3 hours at 300 ℃ to obtain the carbon dioxide trapping material.
Further, in the step 1), the mass ratio of the fly ash to the sodium carbonate is 1:0.6.
further, the metal compound in step 2) includes one or more of a metal salt and a metal oxide.
Further, the metal salt comprises NiCl 2 、CoCl 2 、ZrCl 2 、FeCl 3 One or more of the metal oxides including Al 2 O 3 、Fe 2 O 3 One or more of the following.
Further, in the step 4), the molar ratio of the metal cations in the second mixture to the waste PET and deionized water is 1:1:160.
further, the carbon dioxide trapping material obtained by the preparation method has the carbon dioxide adsorption capacity of 1.20mmol/g under the condition of normal temperature and normal pressure.
Further, the application of the carbon dioxide trapping material in trapping carbon dioxide.
By adopting the scheme, the invention has the following advantages:
1. the invention constructs an aluminum-based metal organic framework material from coal-based solid waste by taking the fly ash and the waste PET as raw materials, is used for carbon dioxide adsorption, namely a carbon dioxide trapping material, and utilizes Al in the activated fly ash 3+ In order to synthesize metal cations of the metal organic framework material MOF, terephthalic acid generated after hydrolysis of waste PET is used as an organic ligand for synthesizing the MOF, so that high-value utilization of solid waste and waste plastics is realized, and the preparation method is environment-friendly, pollution-free, simple in preparation steps and suitable for mass production.
2. Metal salt (FeCl) 3 、NiCl 2 、CoCl 2 、ZrCl 2 ) And metal oxide (Al) 2 O 3 、Fe 2 O 3 ) Can be used as a source of metal cations to form framework-based metal-organic framework materials in coal-based solid wastes.
3. After the fly ash is activated with sodium carbonate, alumina in the fly ash can be converted into NaAlSiO 4 Metal cations are provided for the synthesis of the MOF, and other metal salts can be added to the terephthalic acid generated after the hydrolysis of PET to generate the MOF and grafted on the fly ash which does not participate in the reaction, so that the carbon dioxide adsorption quantity of the fly ash is effectively improved, and the high-value utilization of the solid waste fly ash is realized.
4. The pretreatment steps of the fly ash and PET are simpler, only sodium carbonate is needed for activation, deionized water is used as a solvent, so that the hydrolysis conditions of the PET are met, the method can be used for synthesizing MOF, strong acid and strong alkali such as sodium hydroxide and sulfuric acid are not needed, and acid pollution and alkali pollution are avoided to a great extent.
5. According to the invention, the MOF is prepared by taking the fly ash and the waste PET as raw materials through a hydrothermal process in one step, the activated fly ash provides metal cations, and the hydrolysis product of the PET provides organic ligands for terephthalic acid.
Drawings
FIG. 1 is an XRD pattern of a carbon dioxide capture material prepared from waste PET and fly ash.
Fig. 2 is an SEM image of carbon dioxide capture material prepared from waste PET and fly ash.
Fig. 3 is an SEM image of carbon dioxide capture material prepared from terephthalic acid and fly ash.
FIG. 4 is a comparison of carbon dioxide adsorption amounts of pure fly ash and MIL-53 (Al) under normal temperature and pressure conditions.
Detailed Description
The present invention will be described in detail below with reference to the drawings and examples, but the examples are not intended to limit the present invention in any way, and unless specifically stated otherwise, the reagents, methods and apparatus to which the present invention relates are conventional in the art.
Example 1: preparation of carbon dioxide trapping material by taking waste PET and fly ash as raw materials
The method comprises the following specific steps:
1) Fully mixing 6g of sodium carbonate with 7.23g of fly ash to obtain a mixture I;
2) 2.77g of Al are added to the mixture one of step 1) 2 O 3 Fully grinding by using a mortar, and uniformly mixing to obtain a mixture II;
3) Transferring the mixture II in the step 2) into a tube furnace, and activating for 90min at 890 ℃ to obtain an activator;
4) Adding 1.66g of waste PET and the activator in the step 3) into 28.8g of deionized water, and uniformly mixing to obtain a mixture III;
5) Transferring the mixture III in the step 4) into a 100mL hydrothermal reaction kettle, and reacting for 72h at 220 ℃ to obtain a product I;
6) Washing the product obtained in the step 5) with DMF for 3 times, washing with absolute ethyl alcohol for 5 times, and centrifuging to obtain a precipitate;
7) Drying the precipitate in the step 6) for 24 hours at 100 ℃, and then activating for 3 hours at 300 ℃ to obtain the carbon dioxide trapping material MIL-53 (Al), wherein the XRD pattern and the SEM pattern of the carbon dioxide trapping material MIL-53 are shown in figures 1-2.
Example 2: preparation of carbon dioxide trapping material by taking terephthalic acid and fly ash as raw materials
The method comprises the following specific steps:
1) Fully mixing 6g of sodium carbonate with 7.23g of fly ash to obtain a mixture I;
2) 2.77g of Al are added to the mixture one of step 1) 2 O 3 Fully grinding by using a mortar, and uniformly mixing to obtain a mixture II;
3) Transferring the mixture II in the step 2) into a tube furnace, and activating for 90min at 890 ℃ to obtain an activator;
4) Adding 1.66g of terephthalic acid and the activator in the step 3) into 28.8g of deionized water, and uniformly mixing to obtain a mixture III;
5) Transferring the mixture III in the step 4) into a 100mL hydrothermal reaction kettle, and reacting for 72h at 220 ℃ to obtain a product I;
6) Washing the product obtained in the step 5) with DMF for 3 times, washing with absolute ethyl alcohol for 5 times, and centrifuging to obtain a precipitate;
7) Drying the precipitate in the step 6) for 24 hours at 100 ℃ and then activating for 3 hours at 300 ℃ to obtain the carbon dioxide trapping material.
Example 3: application of
1. Experimental method
The carbon dioxide adsorption amounts of the materials in example 1 and example 2 at 35℃under normal pressure were measured with a specific surface area and pore size analyzer, and the two were subjected to comparative analysis.
2. Experimental results
As shown in FIG. 4, the carbon dioxide adsorption amount of the pure fly ash of example 2 under the conditions of normal temperature and 100Kpa is 0.404mmol/g, and the carbon dioxide adsorption amount of the MIL-53 (Al)/fly ash composite material of example 1 under the conditions of normal temperature and 100Kpa is about three times that of the pure fly ash.
Finally, the following descriptions are used: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The preparation method of the carbon dioxide trapping material based on the waste PET metal organic framework material composite fly ash is characterized by comprising the following steps:
1) Fully mixing sodium carbonate with the fly ash to obtain a mixture I;
2) Adding a metal compound into the mixture I in the step 1), fully grinding the mixture by using a mortar, and uniformly mixing the mixture to obtain a mixture II containing metal cations;
3) Transferring the mixture II in the step 2) into a tube furnace, and activating for 90min at 890 ℃ to obtain an activator;
4) Adding the waste PET and the activator in the step 3) into deionized water, and uniformly mixing to obtain a mixture III;
5) Transferring the mixture III in the step 4) into a 100mL hydrothermal reaction kettle, and reacting for 72h at 220 ℃ to obtain a product I;
6) Washing the product obtained in the step 5) with DMF for 3 times, washing with absolute ethyl alcohol for 5 times, and centrifuging to obtain a precipitate;
7) Drying the precipitate in the step 6) for 24 hours at 100 ℃ and then activating for 3 hours at 300 ℃ to obtain the carbon dioxide trapping material.
2. The method for preparing the carbon dioxide trapping material based on the waste PET metal-organic framework material composite fly ash, which is characterized in that the mass ratio of the fly ash to the sodium carbonate in the step 1) is 1:0.6.
3. the method for producing a carbon dioxide capturing material based on waste PET metal organic framework material and fly ash according to claim 1, wherein the metal compound in step 2) comprises one or more of metal salt and metal oxide.
4. The method for preparing a carbon dioxide trapping material based on waste PET metal-organic framework material composite fly ash according to claim 3, wherein the metal salt comprises NiCl 2 、CoCl 2 、ZrCl 2 、FeCl 3 One or more of the metal oxides including Al 2 O 3 、Fe 2 O 3 One or more of the following.
5. The method for preparing the carbon dioxide trapping material based on the waste PET metal-organic framework material composite fly ash according to claim 1, wherein the molar ratio of the metal cations in the second mixture to the waste PET and the deionized water in the step 4) is 1:1:160.
6. a carbon dioxide trapping material obtained by the production method according to any one of claims 1 to 5, having a carbon dioxide adsorption amount of 1.20mmol/g under normal temperature and pressure conditions.
7. Use of a carbon dioxide capture material according to claim 6 for capturing carbon dioxide.
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| CN202310742351.9A CN116571220A (en) | 2023-06-21 | 2023-06-21 | Carbon dioxide trapping material based on waste PET (polyethylene terephthalate) and metal organic framework material composite fly ash and preparation method thereof |
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| CN202310742351.9A CN116571220A (en) | 2023-06-21 | 2023-06-21 | Carbon dioxide trapping material based on waste PET (polyethylene terephthalate) and metal organic framework material composite fly ash and preparation method thereof |
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|---|---|---|---|---|
| CN103977715A (en) * | 2014-05-12 | 2014-08-13 | 北京航空航天大学 | Preparation method of individually-self-supporting MIL-53 metal-organic framework membrane material |
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