CN113546603A - Preparation method of air purification antibacterial activated carbon - Google Patents
Preparation method of air purification antibacterial activated carbon Download PDFInfo
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- CN113546603A CN113546603A CN202010330455.5A CN202010330455A CN113546603A CN 113546603 A CN113546603 A CN 113546603A CN 202010330455 A CN202010330455 A CN 202010330455A CN 113546603 A CN113546603 A CN 113546603A
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- China
- Prior art keywords
- activated carbon
- water
- molecular sieve
- raw powder
- antibacterial activated
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 18
- 238000004887 air purification Methods 0.000 title claims abstract description 11
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims abstract description 24
- 239000002808 molecular sieve Substances 0.000 claims abstract description 20
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000843 powder Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 15
- 229920002261 Corn starch Polymers 0.000 claims abstract description 14
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000292 calcium oxide Substances 0.000 claims abstract description 14
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000008120 corn starch Substances 0.000 claims abstract description 14
- 239000011592 zinc chloride Substances 0.000 claims abstract description 12
- 235000005074 zinc chloride Nutrition 0.000 claims abstract description 12
- 238000001354 calcination Methods 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 239000012299 nitrogen atmosphere Substances 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 238000005406 washing Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000001704 evaporation Methods 0.000 claims abstract description 4
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 238000004537 pulping Methods 0.000 claims abstract description 4
- 238000007605 air drying Methods 0.000 claims abstract description 3
- 238000010298 pulverizing process Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 7
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 15
- 230000000694 effects Effects 0.000 description 10
- 238000001179 sorption measurement Methods 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 8
- 229920002472 Starch Polymers 0.000 description 7
- 235000019698 starch Nutrition 0.000 description 7
- 239000008107 starch Substances 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 238000003763 carbonization Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000012237 artificial material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229960000907 methylthioninium chloride Drugs 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 238000006467 substitution reaction 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
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
-
- 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
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/318—Preparation characterised by the starting materials
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/342—Preparation characterised by non-gaseous activating agents
- C01B32/348—Metallic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a preparation method of air purification antibacterial activated carbon, which comprises the following steps: (1) uniformly mixing corn starch, molecular sieve raw powder, calcium oxide and zinc chloride, adding the mixture into water, pulping the mixture uniformly, heating the mixture to 120 ℃ in a stirring state, preserving heat for 2-4 hours, and evaporating 90% of water; (2) after stirring is stopped, cooling and solidifying, putting the solidified material into a high-temperature furnace, and calcining in a nitrogen atmosphere; (3) pulverizing the calcined materials to 20-40 mesh, dispersing in water, filtering, washing repeatedly, and air drying at 200 deg.C.
Description
Technical Field
The invention belongs to the field of production processes of air purification antibacterial activated carbon, and particularly relates to a preparation method of air purification antibacterial activated carbon.
Background
The active carbon is a porous artificial carbon adsorbent prepared by carbonizing and activating carbon-containing substances. It has developed pore structure and great specific surface area, and may be used as adsorbent, catalyst and catalyst carrier. Activated carbon was invented as an artificial material in 1900 to 1901, and the inventor of the present invention was Lafel-Wang Orsteilacco, which patented the production of activated carbon by a chemical activation method and a physical activation method. In 1911, the activated carbon was first industrially produced by doctor of madown in a factory near vienna. The product of that time was powdered activated carbon, the first industrial production plant in the world.
The active carbon used in the air purifier needs a certain mesh number, and is preferably granular with higher strength. The activated carbon prepared from the starch polysaccharide has good activity and adsorbability, but the forming is poor, and a binder such as tar needs to be added again for forming. Meanwhile, the adsorption effect of common activated carbon on small molecular organic matters is not good, and the activated carbon can be easily released when the temperature is slightly high, so that the air purification effect is poor. At the same time, it is necessary to have a certain antibacterial effect.
Disclosure of Invention
The invention aims to provide a preparation method of air purification antibacterial activated carbon, which has large specific surface area and strong adsorbability, can directly form starch carbonized powder into large particles with higher strength, can give consideration to both antibacterial property and adsorbability, and has good high-temperature adsorption effect.
A preparation method of air purification antibacterial activated carbon comprises the following steps: (1) uniformly mixing corn starch, molecular sieve raw powder, calcium oxide and zinc chloride, adding the mixture into water, pulping the mixture uniformly, heating the mixture to 120 ℃ in a stirring state, preserving heat for 2-4 hours, and evaporating 90% of water; (2) after stirring is stopped, cooling and solidifying, putting the solidified material into a high-temperature furnace, and calcining in a nitrogen atmosphere; (3) pulverizing the calcined materials to 20-40 mesh, dispersing in water, filtering, washing repeatedly, and air drying at 200 deg.C.
Further, in the step 1, the mass ratio of the corn starch, the molecular sieve raw powder, the calcium oxide, the zinc chloride and the water is 2:1: 05: 1: 5.
Further, the molecular sieve raw powder is 4A molecular sieve raw powder.
Further, the calcined material in the step 3 is crushed into 20-40 meshes, put into 5 times of clean water, and repeatedly washed for 3 times.
Furthermore, the temperature gradient of the calcination in the nitrogen atmosphere is 250 ℃ for 1 hour, 450 ℃ for 2 hours and 600 ℃ for 2 hours, and the heating rates are all 1 ℃ per minute.
The invention has the following beneficial effects:
1. after the corn starch based on biology is used as a raw material and is mixed with traditional zinc chloride, the raw powder of the molecular sieve is added, the formability is improved, the high-temperature adsorption capacity is improved, after calcium oxide is added, the dehydration and expansion effects on the corn starch are achieved on the one hand, the tar generation of the starch in the carbonization process can be reduced, on the other hand, the starch can be compounded with the molecular sieve during calcination, the adsorption capacity of the starch is enhanced, and the starch is mixed with water to participate in the formation of calcium hydroxide, so that the antibacterial effect can be achieved.
2. The carbonization rate can make the specific surface area larger, the activity better and the collapse smaller under a plurality of gradients.
Detailed Description
In order to facilitate a better understanding of the invention, the following examples are given to illustrate, but not to limit the scope of the invention.
The corn starch is edible corn starch purchased from supermarkets, and can be obtained from any brand. Zinc chloride is purchased from Chinese medicine with 98% purity.
Example 1
A preparation method of air purification antibacterial activated carbon comprises the following steps: (1) uniformly mixing corn starch, molecular sieve raw powder, calcium oxide and zinc chloride, adding the mixture into water, pulping the mixture uniformly, heating the mixture to 120 ℃ in a stirring state, preserving heat for 3 hours, and evaporating 90 percent of water; (2) after stirring is stopped, cooling and solidifying, putting the solidified material into a high-temperature furnace, and calcining in a nitrogen atmosphere; (3) and crushing the calcined material to 30 meshes, uniformly dispersing in water, filtering, repeatedly washing for multiple times, and then drying by blowing at 200 ℃.
In the step 1, the mass ratio of the corn starch, the molecular sieve raw powder, the calcium oxide, the zinc chloride and the water is 2:1:0.5:1: 5. The molecular sieve raw powder is 4A molecular sieve raw powder. And 3, crushing the calcined material to 30 meshes, putting the crushed material into 5 times of clean water, and repeatedly washing the crushed material for 3 times. The temperature gradient for calcination in nitrogen atmosphere is 250 ℃ for 1 hour, 450 ℃ for 2 hours, 600 ℃ for 2 hours, and the heating rates are all 1 ℃ per minute.
Comparative example 1
Same as example 1 except that no molecular sieve raw powder was added.
Comparative example 2
Same as example 1 except that no calcium oxide was added.
Comparative example 3
As in example 1, no zinc chloride was added.
Comparative example 4
The ratio of corn starch, molecular sieve raw powder, calcium oxide and zinc chloride was 1:2:0.5:1 as in example 1.
Comparative example 5
The ratio of corn starch, molecular sieve raw powder, calcium oxide and zinc chloride was 2:1:1:0.5 as in example 1.
Comparative example 6
Commercial activated carbon (30 mesh coconut shell activated carbon, Senson carbon technologies Co., Ltd., methylene blue adsorption value 135-.
The products obtained in the above comparative examples and examples were subjected to tests such as pore volume and pore diameter nitrogen adsorption and were entrusted to the chemical system of Shanghai university for testing, and the specific parameters are as shown in the following table. The activated carbon strength test is carried out in GB/T20451-2006. In a 10L closed space at room temperature, 1mg of formaldehyde was charged, 1g of activated carbon was charged, and after 1 hour, the residual formaldehyde ppm was measured, and after the temperature was raised to 40 ℃ and stabilized for 1 hour, the residual formaldehyde ppm was measured.
According to the data, the product of the invention has high specific surface area, proper strength and excellent formaldehyde adsorption effect, and can lock formaldehyde when the temperature is increased. Experiments of a comparative example show that the addition of the molecular sieve raw powder increases the formability and the high-temperature adsorption capacity, and after the calcium oxide is added, the dehydration and expansion effects on the corn starch are achieved, the tar generation of the starch in the carbonization process can be reduced, and on the other hand, the calcium oxide can be compounded with the molecular sieve during the calcination to enhance the adsorption capacity, and the calcium hydroxide is formed after the calcium oxide is mixed with water, so that the antibacterial effect can be achieved. The test result shows that the materials have better adsorption effect, so that the materials cannot be distinguished at room temperature and can be obviously adsorbed at high temperature. In summary, the optimum range of the raw material ratio can achieve the best performance effect. The introduction of calcium hydroxide may have some antibacterial effect, which is not characterized here.
The above description should not be taken as limiting the invention to the embodiments, but rather, as will be apparent to those skilled in the art to which the invention pertains, numerous simplifications or substitutions may be made without departing from the spirit of the invention, which shall be deemed to fall within the scope of the invention as defined by the claims appended hereto.
Claims (5)
1. A preparation method of air purification antibacterial activated carbon is characterized by (1) uniformly mixing corn starch, molecular sieve raw powder, calcium oxide and zinc chloride, adding the mixture into water, pulping uniformly, heating to 120 ℃ under a stirring state, preserving heat for 2-4 hours, and evaporating 90% of water; (2) after stirring is stopped, cooling and solidifying, putting the solidified material into a high-temperature furnace, and calcining in a nitrogen atmosphere; (3) pulverizing the calcined materials to 20-40 mesh, dispersing in water, filtering, washing repeatedly, and air drying at 200 deg.C.
2. The preparation method of the air purification antibacterial activated carbon according to claim 1, wherein the mass ratio of the corn starch, the molecular sieve raw powder, the calcium oxide, the zinc chloride and the water in the step 1 is 2:1:0.5:1: 5.
3. The method for preparing air-purifying antibacterial activated carbon according to claim 1, wherein the molecular sieve raw powder is 4A molecular sieve raw powder.
4. The method for preparing air-purifying antibacterial activated carbon according to claim 1, wherein the material is pulverized to 20-40 mesh after calcination in step 3, and is put into 5 times of clean water and repeatedly washed for 3 times.
5. The method for preparing air-purifying antibacterial activated carbon according to claim 1, wherein the calcination is carried out in a nitrogen atmosphere at a temperature gradient of 250 ℃ for 1 hour, 450 ℃ for 2 hours, and 600 ℃ for 2 hours, at a temperature rise rate of 1 ℃ per minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010330455.5A CN113546603A (en) | 2020-04-24 | 2020-04-24 | Preparation method of air purification antibacterial activated carbon |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010330455.5A CN113546603A (en) | 2020-04-24 | 2020-04-24 | Preparation method of air purification antibacterial activated carbon |
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| CN113546603A true CN113546603A (en) | 2021-10-26 |
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| CN202010330455.5A Pending CN113546603A (en) | 2020-04-24 | 2020-04-24 | Preparation method of air purification antibacterial activated carbon |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1689521A1 (en) * | 2003-11-24 | 2006-08-16 | Council of Scientific and Industrial Research | Preparation of molecular sieve used for the dehydration of the alcohol |
| CN102205961A (en) * | 2011-03-10 | 2011-10-05 | 大连理工大学 | Method for adjusting pore structure of activated carbon |
| CN104307463A (en) * | 2014-11-11 | 2015-01-28 | 东南大学 | Chemically modified calcium-based CO2 adsorbent and preparation method thereof |
| CN109553099A (en) * | 2017-09-25 | 2019-04-02 | 张树宏 | A method of active carbon is prepared using sawdust |
-
2020
- 2020-04-24 CN CN202010330455.5A patent/CN113546603A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1689521A1 (en) * | 2003-11-24 | 2006-08-16 | Council of Scientific and Industrial Research | Preparation of molecular sieve used for the dehydration of the alcohol |
| CN102205961A (en) * | 2011-03-10 | 2011-10-05 | 大连理工大学 | Method for adjusting pore structure of activated carbon |
| CN104307463A (en) * | 2014-11-11 | 2015-01-28 | 东南大学 | Chemically modified calcium-based CO2 adsorbent and preparation method thereof |
| CN109553099A (en) * | 2017-09-25 | 2019-04-02 | 张树宏 | A method of active carbon is prepared using sawdust |
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Application publication date: 20211026 |
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