KR101721493B1 - Activated carbon, and method for manufacture thereof - Google Patents
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- KR101721493B1 KR101721493B1 KR1020150164424A KR20150164424A KR101721493B1 KR 101721493 B1 KR101721493 B1 KR 101721493B1 KR 1020150164424 A KR1020150164424 A KR 1020150164424A KR 20150164424 A KR20150164424 A KR 20150164424A KR 101721493 B1 KR101721493 B1 KR 101721493B1
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- 238000000034 method Methods 0.000 title claims description 38
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title abstract description 106
- 238000004519 manufacturing process Methods 0.000 title abstract description 15
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 33
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- 238000002156 mixing Methods 0.000 claims abstract description 18
- 239000011368 organic material Substances 0.000 claims abstract description 15
- 235000013311 vegetables Nutrition 0.000 claims abstract description 15
- 230000003213 activating effect Effects 0.000 claims abstract description 6
- 238000010000 carbonizing Methods 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 10
- 239000002699 waste material Substances 0.000 claims description 10
- 238000006479 redox reaction Methods 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 2
- 244000144730 Amygdalus persica Species 0.000 claims description 2
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- 235000009496 Juglans regia Nutrition 0.000 claims description 2
- 240000007594 Oryza sativa Species 0.000 claims description 2
- 235000007164 Oryza sativa Nutrition 0.000 claims description 2
- 235000006040 Prunus persica var persica Nutrition 0.000 claims description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 2
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- 235000009566 rice Nutrition 0.000 claims description 2
- 229910052723 transition metal Inorganic materials 0.000 claims description 2
- 235000020234 walnut Nutrition 0.000 claims description 2
- 238000001994 activation Methods 0.000 description 23
- 238000003801 milling Methods 0.000 description 19
- 230000004913 activation Effects 0.000 description 17
- 238000003763 carbonization Methods 0.000 description 13
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 11
- 239000011148 porous material Substances 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
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- 230000008569 process Effects 0.000 description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 238000011282 treatment Methods 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 238000003795 desorption Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 3
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- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052754 neon Inorganic materials 0.000 description 3
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 2
- 244000046052 Phaseolus vulgaris Species 0.000 description 2
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010884 ion-beam technique Methods 0.000 description 2
- 238000010902 jet-milling Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- HMUNWXXNJPVALC-UHFFFAOYSA-N 1-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C(CN1CC2=C(CC1)NN=N2)=O HMUNWXXNJPVALC-UHFFFAOYSA-N 0.000 description 1
- WZFUQSJFWNHZHM-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)CC(=O)N1CC2=C(CC1)NN=N2 WZFUQSJFWNHZHM-UHFFFAOYSA-N 0.000 description 1
- 241001133760 Acoelorraphe Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241000282412 Homo Species 0.000 description 1
- 235000019482 Palm oil Nutrition 0.000 description 1
- 241000533293 Sesbania emerus Species 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000013532 laser treatment Methods 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002540 palm oil Substances 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- C01B31/086—
-
- 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
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
-
- 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
- B01J6/00—Heat treatments such as Calcining; Fusing ; Pyrolysis
-
- C01B31/081—
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The present invention provides a method for producing a carbide, comprising: a) carbonizing a vegetable organic material to produce a carbide; And b) mixing the carbide with a metal oxide and then activating the activated carbon. The present invention also relates to activated carbon produced therefrom.
Description
The present invention relates to activated carbon and a method for producing the same.
Activated carbon is a porous carbon material having fine pores. Since activated carbon has a porosity of about 15 to 95% of its volume, it has an advantage that it can exhibit new characteristics that conventional dense materials do not have.
For example, fine pore sizes and high pore volume ratios can have good adsorption effective surface area or electrochemical surface area per unit volume and can be used as core materials in the field of environment or energy.
Such activated carbon is generally produced by carbonizing a precursor of various carbon materials such as wood, coal, lignite and palm oil to produce a carbonaceous material. The activated carbon is then treated with a strong acid such as hydrochloric acid, phosphoric acid, sodium hydroxide, potassium hydroxide (Japanese Patent Laid-Open Publication No. 2014-129200), or activated (revived) by steam (JP-A-5159970) by treatment with an activating agent such as potassium carbonate or the like.
However, since the raw materials such as palm kernel and coal are supplied depending on the import, the cost of import expenditure is consumed and the supply is not stable. In particular, when coal is used as a raw material, Substances, waste gases) cause environmental pollution, and there is a problem that time and cost are consumed for the treatment of by-products. In addition, harmful chemicals can be harmful to the human body as the activation process proceeds.
Accordingly, there is a need to develop a technology for easily producing activated carbon by using a raw material which does not depend on imports, and which is harmless to the human body and the environment, and is activated by a simple method.
In order to solve the above-mentioned problems, it is an object of the present invention to provide a method of easily producing activated carbon by conducting an activation process through a very simple method without harming the human body and the environment.
According to an aspect of the present invention, there is provided a method of manufacturing a carbon nanotube, comprising: a) carbonizing a vegetable organic material to produce a carbide; And b) mixing the carbide with a metal oxide and then activating the activated carbon. The present invention also relates to activated carbon produced therefrom.
The method for producing activated carbon according to the present invention can easily and easily produce activated carbon through simple mixing and activation of carbide and metal oxide after carbonization process.
In addition, since it does not use harmful substances such as strong bases and strong acids, it is harmless to the human body and the environment.
In addition, when the carbide and the metal oxide are mixed, the diameter of the micropores after activation can be controlled by varying the particle size or the mixing ratio of the metal oxide, thereby controlling the specific surface area of the activated carbon.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a process for producing activated carbon according to an embodiment of the present invention,
2 is a scanning electron microscope (SEM) image of the coffee char (prepared before activation) prepared according to Comparative Example 1 of the present invention and the activated carbon prepared according to Example 1 (after activation).
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. The following drawings are provided by way of example so that those skilled in the art can fully understand the spirit of the present invention. Therefore, the present invention is not limited to the following drawings, but may be embodied in other forms, and the following drawings may be exaggerated in order to clarify the spirit of the present invention. Also, throughout the specification, like reference numerals designate like elements.
Hereinafter, the technical and scientific terms used herein will be understood by those skilled in the art without departing from the scope of the present invention. Descriptions of known functions and configurations that may be unnecessarily blurred are omitted.
The method for producing activated carbon according to the present invention comprises the steps of: a) carbonizing a vegetable organic material to produce a carbide; And b) mixing and activating the carbide with a metal oxide. That is, as shown in FIG. 1, the present invention relates to a simple and easy method for producing activated carbon through simple mixing and activation of a carbide and a metal oxide after a carbonization process. Through such a method, the effective surface area of adsorption or the electrochemical surface area per unit amount of the activated carbon can be improved. In one embodiment, the electrochemical surface area of the activated carbon can be improved to be applied to a material such as a capacitor or a secondary battery.
Hereinafter, a method for producing activated carbon according to an embodiment of the present invention will be described in detail.
First, a step of carbonization of vegetable organic material to produce carbide can be performed. Carbonization is a pyrolysis step constituting the basic structure of activated carbon in the production of activated carbon. The carbonization method is not particularly limited as long as it is a method commonly used in the art, but the structure and characteristics of the carbide generally depend on the carbonization temperature and time. It is preferable to vary the carbonization conditions depending on the characteristics of the raw material and the activated carbon to be used.
As a specific example, step a) may be carried out at a temperature of 500 to 1200 ° C for 1 to 3 hours. In this temperature range, the plant organic matter can be effectively pyrolyzed and carbonized. And more preferably at a temperature of 600 to 1000 DEG C for 40 to 90 minutes. At this time, the carbonization can be performed in an inert gas atmosphere such as argon (Ar), neon (Ne), helium (He) or nitrogen (N 2 ).
The vegetable organic material as a raw material of activated carbon is not particularly limited as long as it is a material capable of producing activated carbon, but it is preferable to select the vegetable organic material in consideration of ease of raw material supply and characteristics after the production of activated carbon. As a specific example, the vegetable organic material may be coffee waste, peach seed, walnut, palm, or rice hull.
In particular, preferably the vegetable organic material may be coffee waste. Coffee is a favorite food of Koreans, and the beans are imported into the domestic market. After extracting coffee from the beans, a large amount of debris is generated and buried or incinerated. The waste coffee waste can be prevented from being wasted by using the wasted coffee waste, and the cost saving effect for supplying the raw material can be seen. In this case, it is needless to say that the coffee waste can be used regardless of the kind of the coffee bean.
When the carbide is produced by the carbonization process, b) a step of mixing the carbide with the metal oxide and then activating may be performed. Activation is the act of nanostructuring the carbide by etching, which means that micropores or pores are formed in the carbide by activation. Such microvoids can be controlled by varying the amount of metal oxide, thereby controlling the adsorption effective surface area or electrochemical surface area per unit amount of activated carbon.
In one example of the present invention, step b) may be carried out by any one or more methods selected from heat treatment, plasma treatment, microwave treatment, ultraviolet (UV) treatment and laser treatment.
More specifically, activation by heat treatment can be achieved through redox reaction by a carbothermal reduction method as shown in the following reaction formula 1, and unlike a conventional activation process, a harmful substance such as strong base or strong acid is not used It is harmless to the human body and the environment.
[Reaction Scheme 1]
M x O y + yC → xM + yCO
(Wherein M x O y is a metal oxide, M is a metal reduced from a metal oxide, an alkali earth metal element of group 2 in the periodic table, a transition metal element of group 3 to group 12, and an element of group 13 to group 16 X is a real number satisfying 1? X? 3, and y can be a real number satisfying 1? Y? 4.
As shown in Scheme 1, the metal oxide is reduced by the redox reaction by the thermal carbon reduction method, and the carbon is oxidized to etch the surface of the carbide. The metal oxide may be Fe 2 O 3 , Fe 3 O 4 , ZnO, MgO, CuO, SnO, CoO, NiO, MnO 2, and the like. Al 2 O 3, and the like. Particularly, iron oxide (Fe 2 O 3 and Fe 3 O 4 ) can be a household garbage that is generated in the real life due to the oxidation caused by oxidation of iron. When used together with the coffee waste, it effectively prevents waste of resources And it is advantageous in that a significant raw material saving effect can be obtained.
In one embodiment of the present invention, the activation conditions are not particularly limited as long as the conditions are such that the carbide can be etched by the redox reaction by the thermal carbon reduction method. However, the structure and the characteristics of the activated carbon may vary depending on the activation temperature and time. It is preferable to change activation conditions depending on the characteristics of the designed activated carbon.
As a specific example, the heat treatment may be performed at a temperature of 500 to 1200 ° C for 1 to 5 hours. In this temperature range, the redox reaction by the thermal carbon reduction method is performed well, and the surface of the carbide can be effectively etched. And more preferably at a temperature of 700 to 1000 DEG C for 150 to 210 minutes. At this time, it is needless to say that activation by heat treatment can be performed in an inert gas atmosphere such as argon (Ar), neon (Ne), helium (He) or nitrogen (N 2 ).
In addition, when the carbide and the metal oxide are mixed, the diameter of the micropores after activation can be controlled by varying the particle size or the mixing ratio of the metal oxide, thereby controlling the specific surface area of the activated carbon.
In one embodiment, the weight ratio of carbide: metal oxide may be 1: 1 to 20, more preferably 1: 2 to 10, and even more preferably 1: 4 to 8. By satisfying the above range, activated carbon having a wide specific surface area can be produced. In addition, since the size of microvoids may vary depending on the particle diameter of the metal oxide, it is preferable to control the particle diameter of the metal oxide particles according to the characteristics of the planned activated carbon. In one embodiment, the average particle diameter of the metal oxide is 0.5 nm To 5 m, more preferably from 1 to 100 nm, and even more preferably from 1 to 5 nm. Likewise, by satisfying this range, it is possible to produce activated carbon having a large specific surface area, and it is preferable to use a metal oxide having a smaller particle size (average particle diameter of 1 to 5 nm) to improve the specific surface area Can be more effective.
By adjusting the mixing ratio of the carbide and the metal oxide or the particle size of the metal oxide, the size of the micropores and the pore volume (volume of the pores) of the activated carbon can be controlled. For example, the activated carbon according to an exemplary embodiment of the present invention may have 60 to 80 volume% of microvoids and 15 to 35 volume% of meso and macrovoids, and may have 5 or less volume% of the skeleton. Here, the microvoid refers to a pore having a diameter of less than 2 nm, and the mesopores may be a pore having a diameter of 2 to 50 nm and a macropore of 50 nm or more.
In one embodiment of the present invention, the mixing method of the carbide and the metal oxide is not particularly limited as long as it is a method well known in the art, and examples include ultrasonic wave, ion beam milling, ball milling, satellite milling, jet milling, Mixing can be carried out by one or more methods selected from, for example, two roll milling, three roll milling, basket milling, gravure milling, attrition milling, screw mixing milling and sand milling.
In addition, in the method of manufacturing activated carbon according to an example of the present invention, the carbonization process and the activation process can be performed at the same time. That is, carbonization and activation can be performed simultaneously by mixing vegetable organic materials with metal oxides and then heat-treating them. At this time, the contents of the vegetable organic material and the metal oxide are the same as described above, and a duplicate description will be omitted. Thus, the carbonization process and the activation process can be simultaneously performed through one heat treatment, so that activated carbon can be produced very easily and easily.
Specifically, in one embodiment of the present invention, the weight ratio of the vegetable organic material to the metal oxide may be 1: 1 to 20, more preferably 1: 2 to 10, still more preferably 1: 4 to 8 May be effective in producing activated carbon having a wider specific surface area.
At this time, the heat treatment can be performed at a temperature of 500 or more for 1 to 5 hours. The carbonization of the vegetable organic material and the redox reaction by the hot carbon reduction method are well performed in the temperature range and the surface of the carbide can be effectively etched. More preferably, the heat treatment can be performed at a temperature of 700 to 1000 ° C for 150 to 210 minutes. The heat treatment may be performed in an inert gas atmosphere such as argon (Ar), neon (Ne), helium (He) or nitrogen (N 2 ).
In one embodiment of the present invention, the mixing method of the vegetable organic material and the metal oxide is not particularly limited as long as it is a method well known in the art, and examples include ultrasonic wave, ion beam milling, ball milling, satellite milling, jet milling, Mixing may be carried out by one or more methods selected from milling, two roll milling, three roll milling, basket milling, gravure milling, attrition milling, screw mixing milling and sand milling.
Hereinafter, the method for producing activated carbon according to the present invention will be described in more detail with reference to examples. It should be understood, however, that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.
Unless otherwise defined, all technical and scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In addition, the unit of the additives not specifically described in the specification may be% by weight.
[Example 1]
The coffee waste was placed in an oven, dried at 100 ° C for 12 hours, and then carbonized at 800 ° C for 1 hour by CVD (Chemical Vapor Deposition) to obtain a coffee charcoal.
The obtained coffee carbohydrate and iron oxide (Fe 2 CO 3 ) were prepared at a weight ratio of 1: 8, mixed using ball milling, and then activated by CVD at 900 ° C. for 3 hours to obtain coffee activated carbon.
Finally, the obtained coffee activated carbon was immersed in a 1 M HCl solution for 24 hours to remove the reduced metal from the iron oxide. After the reduced metal was completely removed, it was washed with distilled water and dried in a vacuum oven. (During the HCl treatment, the reduced metal is dissolved in the HCl solution to form FeCl 2 solution, which can be recycled as an activator in the existing activated carbon manufacturing process.)
A photograph of the prepared coffee activated carbon was measured by a scanning electron microscope and is shown in FIG. 2. The specific surface area is shown in Table 1 by measuring the absorption-desorption isotherm of nitrogen using the BET (Brunauer-Emmett-Teller) method .
[Examples 2 to 9]
Except that the activation process was carried out under the conditions shown in Table 1 below. The specific surface area of the prepared activated carbon was measured by the absorption-desorption isotherm of nitrogen using the BET (Brunauer-Emmett-Teller) method, and the results are shown together in Table 1.
[Comparative Example 1]
All the steps except that the activation step was not carried out were carried out in the same manner as in Example 1. The specific surface area of the prepared coffee carbide was measured by the absorption-desorption isotherm of nitrogen using the BET (Brunauer-Emmett-Teller) method, and is shown together in Table 1.
[Comparative Example 2]
All processes except that iron oxide was not added were carried out in the same manner as in Example 1. The specific surface area of the prepared activated carbon was measured by the absorption-desorption isotherm of nitrogen using the BET (Brunauer-Emmett-Teller) method, and the results are shown together in Table 1.
(° C)
(time)
(M < 2 > / g)
As shown in Table 1, it was confirmed that the surface of the coffee carbide was etched only by heating and mixing the iron oxide with the carbide to increase the specific surface area more than ten times. As described above, the method for producing activated carbon according to the present invention can easily produce an activated carbon having an improved specific surface area through a very simple method without using a strong acid or a strong base which is harmless to humans and the environment.
As described above, the present invention has been described with reference to specific embodiments and limited examples and comparative examples. However, the present invention is not limited to the above-described embodiments, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention .
Claims (8)
b) activating the carbide through oxidation-reduction reaction of the following reaction formula 1 by mixing the carbide with a metal oxide and then performing heat treatment;
≪ / RTI >
[Reaction Scheme 1]
M x O y + yC → xM + yCO
(Wherein M x O y is a metal oxide, M is a metal reduced from a metal oxide, an alkali earth metal element of group 2 in the periodic table, a transition metal element of group 3 to group 12, and an element of group 13 to group 16 , X is a real number satisfying 1? X? 3, and y is a real number satisfying 1? Y? 4.
Wherein the vegetable organic material is a coffee waste, a peach seed, a walnut, a palm, or a rice hull.
Wherein the metal oxide is one or more selected from Fe 2 O 3 , Fe 3 O 4 , ZnO, MgO, CuO, SnO, CoO, NiO, MnO 2 and Al 2 O 3 .
Wherein the metal oxide has an average particle diameter of 0.5 nm to 5 占 퐉.
Wherein the weight ratio of the carbide to the metal oxide is 1: 1 to 20.
Wherein the step a) is carried out at a temperature of 500 to 1,200 ° C for 1 to 3 hours.
Wherein the heat treatment is carried out at a temperature of 500 to 1200 ° C for 1 to 3 hours.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190073170A (en) * | 2017-12-18 | 2019-06-26 | 재단법인 포항산업과학연구원 | Pellets for production of direct reducted iron using coffee waste and method for preparing direct reducted iron using the same |
| KR20190073736A (en) * | 2017-12-19 | 2019-06-27 | 재단법인 포항산업과학연구원 | The method for producing direct reduced iron by multi-stage reduction |
| KR20190111394A (en) * | 2018-03-22 | 2019-10-02 | 서울과학기술대학교 산학협력단 | Mesoporous carbon materials and method for preparing the same |
| KR20220052251A (en) * | 2020-10-20 | 2022-04-27 | 숭실대학교산학협력단 | Method for manufacturing metal-carbon composite using coffee waste |
| KR20230088607A (en) | 2021-12-10 | 2023-06-20 | 주식회사 도시광부 | Manufacturing method for activated carbon |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5159970A (en) | 1974-11-21 | 1976-05-25 | Toray Industries | Kankoseijushibanno seikeihoho |
| KR970002890B1 (en) * | 1994-03-31 | 1997-03-12 | 한국건설기술연구원 | Process for the preparation of chaff activated carbon |
| KR20100107765A (en) * | 2009-03-26 | 2010-10-06 | 현대제철 주식회사 | Activated carbon for adsorption tower and the manufacturing method thereof |
| JP2014129200A (en) | 2012-12-28 | 2014-07-10 | Kansai Coke & Chem Co Ltd | Active carbon and manufacturing method thereof |
-
2015
- 2015-11-24 KR KR1020150164424A patent/KR101721493B1/en active IP Right Grant
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5159970A (en) | 1974-11-21 | 1976-05-25 | Toray Industries | Kankoseijushibanno seikeihoho |
| KR970002890B1 (en) * | 1994-03-31 | 1997-03-12 | 한국건설기술연구원 | Process for the preparation of chaff activated carbon |
| KR20100107765A (en) * | 2009-03-26 | 2010-10-06 | 현대제철 주식회사 | Activated carbon for adsorption tower and the manufacturing method thereof |
| JP2014129200A (en) | 2012-12-28 | 2014-07-10 | Kansai Coke & Chem Co Ltd | Active carbon and manufacturing method thereof |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190073170A (en) * | 2017-12-18 | 2019-06-26 | 재단법인 포항산업과학연구원 | Pellets for production of direct reducted iron using coffee waste and method for preparing direct reducted iron using the same |
| KR102073832B1 (en) | 2017-12-18 | 2020-02-05 | 재단법인 포항산업과학연구원 | Pellets for production of direct reducted iron using coffee waste and method for preparing direct reducted iron using the same |
| KR20190073736A (en) * | 2017-12-19 | 2019-06-27 | 재단법인 포항산업과학연구원 | The method for producing direct reduced iron by multi-stage reduction |
| KR102112635B1 (en) | 2017-12-19 | 2020-05-19 | 재단법인 포항산업과학연구원 | The method for producing direct reduced iron by multi-stage reduction |
| KR20190111394A (en) * | 2018-03-22 | 2019-10-02 | 서울과학기술대학교 산학협력단 | Mesoporous carbon materials and method for preparing the same |
| KR102036990B1 (en) | 2018-03-22 | 2019-10-25 | 서울과학기술대학교 산학협력단 | Mesoporous carbon materials and method for preparing the same |
| KR20220052251A (en) * | 2020-10-20 | 2022-04-27 | 숭실대학교산학협력단 | Method for manufacturing metal-carbon composite using coffee waste |
| KR102523157B1 (en) * | 2020-10-20 | 2023-04-18 | 숭실대학교 산학협력단 | Method for manufacturing metal-carbon composite using coffee waste |
| KR20230088607A (en) | 2021-12-10 | 2023-06-20 | 주식회사 도시광부 | Manufacturing method for activated carbon |
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