CN107661758B - Preparation method and application of 2-methylimidazolyl hierarchical pore catalyst carbon material - Google Patents
Preparation method and application of 2-methylimidazolyl hierarchical pore catalyst carbon material Download PDFInfo
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- CN107661758B CN107661758B CN201710724835.5A CN201710724835A CN107661758B CN 107661758 B CN107661758 B CN 107661758B CN 201710724835 A CN201710724835 A CN 201710724835A CN 107661758 B CN107661758 B CN 107661758B
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- 239000003575 carbonaceous material Substances 0.000 title claims abstract description 53
- 239000003054 catalyst Substances 0.000 title claims abstract description 43
- -1 2-methylimidazolyl Chemical group 0.000 title claims abstract description 37
- 239000002149 hierarchical pore Substances 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 230000003647 oxidation Effects 0.000 claims abstract description 17
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 17
- 230000003197 catalytic effect Effects 0.000 claims abstract description 15
- 150000001868 cobalt Chemical class 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000012535 impurity Substances 0.000 claims abstract description 9
- 239000001301 oxygen Substances 0.000 claims abstract description 9
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 9
- 230000015556 catabolic process Effects 0.000 claims abstract description 7
- 238000006731 degradation reaction Methods 0.000 claims abstract description 7
- 238000010000 carbonizing Methods 0.000 claims abstract description 5
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 5
- 239000010941 cobalt Substances 0.000 claims abstract description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 239000002243 precursor Substances 0.000 claims abstract description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 14
- WIIZWVCIJKGZOK-RKDXNWHRSA-N chloramphenicol Chemical compound ClC(Cl)C(=O)N[C@H](CO)[C@H](O)C1=CC=C([N+]([O-])=O)C=C1 WIIZWVCIJKGZOK-RKDXNWHRSA-N 0.000 claims description 13
- 229960005091 chloramphenicol Drugs 0.000 claims description 13
- LXBGSDVWAMZHDD-UHFFFAOYSA-N 2-methyl-1h-imidazole Chemical compound CC1=NC=CN1 LXBGSDVWAMZHDD-UHFFFAOYSA-N 0.000 claims description 10
- 238000003763 carbonization Methods 0.000 claims description 8
- 229910052786 argon Inorganic materials 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- 239000012153 distilled water Substances 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 238000004321 preservation Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 4
- GVPFVAHMJGGAJG-UHFFFAOYSA-L cobalt dichloride Chemical compound [Cl-].[Cl-].[Co+2] GVPFVAHMJGGAJG-UHFFFAOYSA-L 0.000 claims description 2
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 claims description 2
- 229910001981 cobalt nitrate Inorganic materials 0.000 claims description 2
- 238000006555 catalytic reaction Methods 0.000 abstract description 6
- 239000002957 persistent organic pollutant Substances 0.000 abstract description 6
- 238000005406 washing Methods 0.000 abstract description 6
- 238000001179 sorption measurement Methods 0.000 abstract description 3
- YSWBFLWKAIRHEI-UHFFFAOYSA-N 4,5-dimethyl-1h-imidazole Chemical compound CC=1N=CNC=1C YSWBFLWKAIRHEI-UHFFFAOYSA-N 0.000 abstract 1
- 238000001354 calcination Methods 0.000 abstract 1
- 239000012299 nitrogen atmosphere Substances 0.000 abstract 1
- 238000005303 weighing Methods 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 description 6
- 238000001035 drying Methods 0.000 description 5
- 230000001590 oxidative effect Effects 0.000 description 5
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000593 degrading effect Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 239000006228 supernatant Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- HDMGAZBPFLDBCX-UHFFFAOYSA-M potassium;sulfooxy sulfate Chemical compound [K+].OS(=O)(=O)OOS([O-])(=O)=O HDMGAZBPFLDBCX-UHFFFAOYSA-M 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 229910003481 amorphous carbon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- UBEWDCMIDFGDOO-UHFFFAOYSA-N cobalt(II,III) oxide Inorganic materials [O-2].[O-2].[O-2].[O-2].[Co+2].[Co+3].[Co+3] UBEWDCMIDFGDOO-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000004434 industrial solvent Substances 0.000 description 1
- 239000003444 phase transfer catalyst Substances 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
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- 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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/20—Carbon compounds
- B01J27/22—Carbides
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/34—Organic compounds containing oxygen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Catalysts (AREA)
Abstract
The invention belongs to the field of catalytic degradation of organic pollutants, and provides a preparation method and application of a dimethyl imidazolyl hierarchical pore catalyst carbon material, which are carried out according to the following steps: step 1, carbonizing a cobalt ion-doped precursor: weighing a certain amount of dimethyl imidazole and a proper amount of cobalt salt, fully mixing, calcining in a tubular furnace under the protection of nitrogen atmosphere, and washing with water to remove impurities to obtain a cobalt-doped dimethyl imidazolyl carbon material; step 2, high-temperature oxidation: and (3) carrying out high-temperature oxidation under the condition of introducing air or oxygen to prepare the dimethyl imidazolyl hierarchical pore catalyst carbon material. The dimethyl imidazolyl hierarchical pore catalyst carbon material prepared by the method has high specific surface area and can be widely used in the field of adsorption and catalysis of organic pollutants.
Description
Technical Field
The invention belongs to the field of catalytic degradation of organic pollutants, and relates to a preparation method and application of a 2-methylimidazolyl hierarchical pore catalyst carbon material.
Background
Porous carbon, which is black powdery or blocky amorphous carbon, has a high specific surface area and an ultra-small density, and thus is widely used for water purification, gas phase adsorption, industrial exhaust gas purification, gas desulfurization, air drying, gas masks, industrial solvent decolorization and purification, deodorization, catalyst carriers, and the like. The product has the functions of decoloring, purifying, impurity removing, deodorizing, peculiar smell removing, carrier, purifying, recycling and the like.
In recent years, in the field of catalysis, Co3O4Because of its superior oxidation catalytic performance, it is receiving much attention from researchers. In addition, potassium hydrogen persulfate has attracted much attention because it can generate persulfate ions having a high redox potential, thereby effectively degrading organic pollutants. Meanwhile, the cobalt catalyst can efficiently activate the potassium hydrogen persulfate, form an oxidation catalysis system and show super-strong catalytic performance to organic pollutants. The cobalt salt is used as a catalyst, and has higher reaction efficiency under mild conditions without phase transfer catalysts, sulfide auxiliaries and the like; in addition, the process is completed only by one-step feeding, the process is simple, the operation is convenient, and a large amount of manpower and material resources are saved.
Disclosure of Invention
The invention successfully prepares the 2-methylimidazolyl hierarchical pore catalyst carbon material with high catalytic performance through two steps of high-temperature carbonization and high-temperature oxidation. And the method has the advantages of low raw material cost, short reaction flow, simple process operation, mild reaction conditions, good product selectivity, no pollution to the environment and accordance with the green economic requirements.
The invention aims to provide a preparation method of a 2-methylimidazolyl hierarchical pore catalyst carbon material, which comprises the step of carbonizing a precursor doped with metal ions. And secondly, carrying out high-temperature oxidation under the condition of introducing air or oxygen to prepare the 2-methylimidazolyl hierarchical pore catalyst carbon material. The 2-methylimidazolyl hierarchical pore catalyst carbon material prepared by the method has high specific surface area and can be widely used in the field of adsorption and catalysis of organic pollutants. And parameters such as the morphology, the pore channel distribution and the like of the composite material are revealed through various characterization means.
The technical scheme adopted by the invention is as follows:
the preparation method of the 2-methylimidazolyl hierarchical pore catalyst carbon material comprises the following steps:
step 1, carbonizing a cobalt ion-doped precursor:
taking 2-methylimidazole and cobalt salt in a certain proportion, fully mixing, then carrying out programmed heating to a carbonization temperature in an inert gas atmosphere, then carrying out high-temperature carbonization, and cleaning and removing impurities to obtain a cobalt-doped 2-methylimidazolyl carbon material;
step 2, high-temperature oxidation: and (2) carrying out high-temperature oxidation on the cobalt-doped 2-methylimidazolyl carbon material obtained in the step (1) under the condition of introducing air or oxygen to prepare the 2-methylimidazolyl hierarchical pore catalyst carbon material.
In the step 1, the mass ratio of the 2-methylimidazole to the cobalt salt is 1-8: 1.
In the step 1, the cobalt salt is one or two of cobalt nitrate or cobalt chloride.
In the step 1, the temperature programming speed is 3-10 ℃ min-1The carbonization temperature is 500-900 ℃, and the heat preservation time is 0.5-3 h.
In the step 1, the inert gas is one of nitrogen or argon.
In step 1, deionized water, distilled water or hot water is used for cleaning.
In the step 2, the high-temperature oxidation temperature is 200-500 ℃, and is maintained for 0.5-6 h.
In step 2, the high-temperature oxidation is performed in an oxygen or air atmosphere.
In step 2, the high-temperature oxidation is carried out in a muffle furnace or a tube furnace.
The 2-methylimidazolyl hierarchical pore catalyst carbon material prepared by the method is used for catalytic degradation of chloramphenicol in a water environment. The invention has the beneficial effects that:
(1) the prepared 2-methylimidazolyl hierarchical pore catalyst carbon material can effectively activate oxone, form a stable oxidation catalysis system and quickly degrade chloramphenicol in a water environment.
(2) In view of the high specific surface area of the material, it can be widely used in the fields of catalyst carriers and the like.
(3) The hierarchical porous carbon material prepared from the 2-methylimidazole has the performances of high specific surface area, quick catalysis, stable performance, good recycling property and the like.
(4) The preparation method is simple and feasible, completes the carbonization and the doping of metal ions in one step, has short flow and easy control of operation, and is suitable for popularization and application.
Drawings
FIG. 1 is a scanning electron microscope image of a 2-methylimidazolyl hierarchical pore catalyst carbon material.
FIG. 2 is an XRD pattern of a carbon material of a 2-methylimidazolyl hierarchical pore catalyst.
Detailed Description
The invention is further described with reference to the following figures and embodiments:
example 1:
2-methylimidazole and cobalt salt in a mass ratio of 2:1 are taken, fully mixed and carbonized at the high temperature of 600 ℃ in the atmosphere of nitrogen or argon, the heat preservation time is 2 hours, and the temperature rise speed is 5 ℃ min-1Washing with deionized water, distilled water or hot water for many times to remove impurities, and drying to obtain the cobalt-doped 2-methylimidazolyl carbon material; and oxidizing the cobalt-doped 2-methylimidazolyl carbon material in a tubular furnace at 300 ℃ under the condition of introducing air, and preserving heat for 6 hours to obtain the 2-methylimidazolyl hierarchical pore catalyst carbon material.
FIG. 1 is a scanning electron microscope image of a 2-methylimidazolyl hierarchical pore catalyst carbon material, which shows that the surface of the catalyst carbon material is rough, the pore structure is dense, and the catalyst carbon material has a hierarchical pore structure with different pore diameters.
FIG. 2 is an XRD pattern of a 2-methylimidazolyl hierarchical pore catalyst carbon material, which is subjected to spectrum analysis to generate cobalt carbide and Co after oxidation at 300 ℃ and 400 DEG C3O4And lays a foundation for the subsequent catalytic degradation of chloramphenicol.
Example 2:
2-methylimidazole and cobalt salt in a mass ratio of 1:1 are taken, fully mixed and carbonized at a high temperature of 500 ℃ in the atmosphere of nitrogen or argon, the heat preservation time is 3 hours, and the heating rate is 3 ℃ min-1Washing with deionized water, distilled water or hot water for many times to remove impurities, and drying to obtain the cobalt-doped 2-methylimidazolyl carbon material; and oxidizing the cobalt-doped 2-methylimidazolyl carbon material in a muffle furnace or a tubular furnace at 200 ℃ under the condition of introducing air or oxygen, and preserving the temperature for 6 hours to prepare the 2-methylimidazolyl hierarchical pore catalyst carbon material.
Example 3:
2-methylimidazole and cobalt salt in a mass ratio of 8:1 are taken, fully mixed and carbonized at a high temperature of 500 ℃ in the atmosphere of nitrogen or argon, the heat preservation time is 3 hours, and the heating rate is 10 ℃ min-1Washing with deionized water, distilled water or hot water for many times to remove impurities, and drying to obtain the cobalt-doped 2-methylimidazolyl carbon material; and oxidizing the cobalt-doped 2-methylimidazolyl carbon material in a muffle furnace or a tubular furnace at 500 ℃ under the condition of introducing air or oxygen, and preserving the temperature for 0.5h to prepare the 2-methylimidazolyl hierarchical pore catalyst carbon material.
Example 4:
2-methylimidazole and cobalt salt in a mass ratio of 6:1 are taken, fully mixed and carbonized at the high temperature of 900 ℃ in the atmosphere of nitrogen or argon, the heat preservation time is 0.5h, and the temperature rise speed is 5 ℃ min-1Washing with deionized water, distilled water or hot water for many times to remove impurities, and drying to obtain the cobalt-doped 2-methylimidazolyl carbon material; and oxidizing the cobalt-doped 2-methylimidazolyl carbon material in a muffle furnace or a tubular furnace at 400 ℃ under the condition of introducing air or oxygen, and preserving the temperature for 3 hours to prepare the 2-methylimidazolyl hierarchical pore catalyst carbon material.
Example 5:
taking 2-methylimidazole and cobalt salt in a mass ratio of 4:1, fully mixing, carbonizing at 700 ℃ under the atmosphere of nitrogen or argon, keeping the temperature for 1h, and raising the temperature for 5 ℃ for min-1Washing with deionized water, distilled water or hot water for several times to remove impurities, and drying to obtain cobalt-doped 2-methylimidazolylA carbon material; and oxidizing the cobalt-doped 2-methylimidazolyl carbon material in a muffle furnace or a tubular furnace at 300 ℃ under the condition of introducing air or oxygen, and preserving the temperature for 5 hours to prepare the 2-methylimidazolyl hierarchical pore catalyst carbon material.
Catalyst degradation test:
the prepared 2-methylimidazolyl hierarchical pore catalyst carbon material can effectively activate persulfate, form a high-efficiency catalytic system and rapidly degrade chloramphenicol in a water environment.
2mg of 2-methylimidazolyl hierarchical pore catalyst carbon material was placed in a centrifuge tube, and 5 mmol. multidot.L was added to 10ml of the tube-1Potassium hydrogen persulfate in a concentration of 10 mg. L-1And (3) degrading the chloramphenicol aqueous solution with the concentration in a water bath at 20, 30 and 40 ℃ for 10min, filtering the chloramphenicol aqueous solution by using a 0.22-micron filter membrane, measuring the ultraviolet absorbance of the supernatant, and researching the catalytic speed and efficiency of the chloramphenicol aqueous solution at different temperatures.
2mg of 2-methylimidazolyl hierarchical pore catalyst carbon material was placed in a centrifuge tube, and 5 mmol. multidot.L was added to 10ml of the tube-1Potassium hydrogen persulfate in a concentration of 10 mg. L-1And (3) degrading the chloramphenicol aqueous solution with the concentration in a water bath at 30 ℃, filtering the chloramphenicol aqueous solution by using a 0.22 mu m filter membrane when the chloramphenicol aqueous solution is degraded in 0.5, 1, 2, 3, 4, 5, 8, 10, 15, 20, 30 and 60min, measuring the ultraviolet absorbance of the supernatant, and calculating the catalytic speed and efficiency of the supernatant under different high-efficiency catalytic times.
According to the method for catalytic degradation of chloramphenicol in water environment, the 2-methylimidazolyl hierarchical pore catalyst carbon material and persulfate are found to have good catalytic performance when being placed in a chloramphenicol solution at the same time, so that the catalyst and the persulfate form a high-efficiency catalytic system and show good synergistic effect.
Claims (8)
1. A preparation method of a 2-methylimidazolyl hierarchical pore catalyst carbon material is characterized by comprising the following steps:
step 1, carbonizing a cobalt ion-doped precursor:
taking 2-methylimidazole and cobalt salt in a certain proportion, fully mixing, then carrying out programmed heating to a carbonization temperature in an inert gas atmosphere, then carrying out high-temperature carbonization, and cleaning and removing impurities to obtain a cobalt-doped 2-methylimidazolyl carbon material; the mass ratio of the 2-methylimidazole to the cobalt salt is 1-8: 1;
step 2, high-temperature oxidation: and (2) carrying out high-temperature oxidation on the cobalt-doped 2-methylimidazolyl carbon material obtained in the step (1) under the condition of introducing air or oxygen to prepare the 2-methylimidazolyl hierarchical pore catalyst carbon material.
2. The method for preparing a 2-methylimidazolyl hierarchical pore catalyst carbon material according to claim 1, wherein in step 1, the cobalt salt is one or both of cobalt nitrate and cobalt chloride.
3. The method for preparing a 2-methylimidazolyl hierarchical pore catalyst carbon material according to claim 1, wherein in step 1, the temperature programming rate is 3 to 10 ℃ · min-1The carbonization temperature is 500-900 ℃, and the heat preservation time is 0.5-3 h.
4. The method for preparing a 2-methylimidazolyl hierarchical pore catalyst carbon material according to claim 1, wherein in step 1, the inert gas is one of nitrogen or argon.
5. The method for preparing a 2-methylimidazolyl hierarchical pore catalyst carbon material according to claim 1, wherein in step 1, deionized water, distilled water, or hot water is used for cleaning.
6. The method as claimed in claim 1, wherein the high temperature oxidation temperature in step 2 is 200-500 ℃ and is maintained for 0.5-6 h.
7. The method for preparing a 2-methylimidazolyl hierarchical pore catalyst carbon material according to claim 1, wherein in step 2, the high-temperature oxidation is performed in a muffle furnace or a tube furnace.
8. The 2-methylimidazolyl hierarchical pore catalyst carbon material prepared by the preparation method of any one of claims 1 to 7 is used for catalytic degradation of chloramphenicol in water environment.
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Non-Patent Citations (3)
| Title |
|---|
| Cobalt based non-precious electrocatalysts for oxygen reduction reaction in proton exchange membrane fuel cells;Yuanwei Ma, et al.;《Electrochimica Acta》;20100402;第55卷;第7945-7950页 * |
| Heterogeneous activation of peroxymonosulfate using ordered mesoporous Co3O4 for the degradation of chloramphenicol at neutral pH;Jing Deng, et al.;《Chemical Engineering Journal》;20160917;第308卷;第505-515页 * |
| Synthesis of nanoporous carbon–cobalt-oxide hybrid electrocatalysts by thermal conversion of metal–organic frameworks;Watcharop Chaikittisilp, et al.;《Chemistry-A European Journal》;20140312;第20卷;第4217-4221页 * |
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