CN116212819B - Activated carbon adsorption material and application thereof in preparation of automobile air conditioner filter element - Google Patents
Activated carbon adsorption material and application thereof in preparation of automobile air conditioner filter element Download PDFInfo
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- 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
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- 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
- B01D53/04—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 with stationary adsorbents
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
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Abstract
The invention discloses an activated carbon adsorption material, which comprises coconut shell activated carbon, chitosan modified nano zinc oxide agent and complex modulation modified liquid; wherein the mass ratio of the coconut shell activated carbon to the chitosan modified nano zinc oxide to the complex-tuned modified liquid is (2-3): (4-5): (9-11). The rectorite has a layer chain structure, can optimize the strength performance of a product system, and is better matched with a chitosan modified nano zinc oxide agent after being modified by sulfuric acid aqueous solution, sodium silicate aqueous solution and stearic acid, and the sodium silicate aqueous solution, the sodium silicate aqueous solution and the stearic acid are synergistic, so that the antibacterial durability and the compressive strength performance of the product are improved in a synergistic manner.
Description
Technical Field
The invention relates to the technical field of adsorption materials, in particular to an activated carbon adsorption material and application thereof in preparing an automobile air conditioner filter element.
Background
Activated carbon is activated by carbon-containing substances such as wood, coal, fruit shells and the like under the condition of high temperature and oxygen deficiency, and the activated carbon adsorption is a water treatment method for removing pollutants in water by utilizing the performances of physical adsorption, chemical adsorption, oxidation, catalytic oxidation, reduction and the like of the activated carbon. The active carbon is prepared by using carbon-containing substances such as wood dust, shells, brown coal and the like as raw materials and carbonizing and activating the raw materials. There are two kinds of powder (particle size of 10-50 microns) and granule (particle size of 0.4-2.4 mm). The universality is porous and the specific surface area is large. The total surface area is 500-1000 square meters per gram. The main performance parameters are adsorption capacity and adsorption rate.
The existing activated carbon adsorption material is used in an air conditioner filter element, the antibacterial performance is not durable, meanwhile, the compressive strength is low, the compressive strength performance and the antibacterial performance are difficult to coordinate, optimize and improve, and the service efficiency of the product is limited.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide an activated carbon adsorption material and application thereof in preparing an automobile air conditioner filter element so as to solve the problems in the background art.
The invention solves the technical problems by adopting the following technical scheme:
the invention provides an activated carbon adsorption material, which comprises coconut activated carbon, chitosan modified nano zinc oxide agent and complex modulation modified liquid; wherein the mass ratio of the coconut shell activated carbon to the chitosan modified nano zinc oxide to the complex-tuned modified liquid is (2-3): (4-5): (9-11).
Preferably, the particle size of the coconut shell activated carbon is 100-150nm.
Preferably, the preparation method of the chitosan modified nano zinc oxide agent comprises the following steps:
s01: adding 1-3 parts of sodium oxalate into 10-15 parts of 5% hydrochloric acid aqueous solution by mass percent, uniformly stirring, then adding 2-5 parts of lanthanum nitrate and 0.2-0.4 part of sodium dodecyl sulfate, and fully stirring to obtain a ball grinding agent;
s02: firstly placing nano zinc oxide into a ball mill, then adding a ball milling agent accounting for 10-15% of the total amount of the nano zinc oxide, performing ball milling for 1-2 hours at a ball milling rotating speed of 1000-1200r/min, performing water washing after ball milling, and drying to obtain the ball milling nano zinc oxide;
s03: and (3) sending the ball-milling type nano zinc oxide into chitosan regulating solution which is 2-3 times of the ball-milling type nano zinc oxide for stirring modification treatment, and after stirring, washing and drying to obtain the chitosan modified nano zinc oxide agent.
Preferably, the stirring speed of the stirring modification treatment is 600-700r/min, the stirring time is 35-45min, and the stirring temperature is 45-55 ℃.
Preferably, the preparation method of the chitosan regulating solution comprises the following steps: adding 4-6 parts of yttrium nitrate solution into 10-20 parts of chitosan aqueous solution, then adding 1-3 parts of sodium carboxymethylcellulose and 0.45-0.65 part of silane coupling agent KH560, uniformly stirring, finally adding 5-8 parts of hydroxyapatite, and carrying out ultrasonic dispersion treatment to obtain the chitosan regulating solution.
Preferably, the power of the ultrasonic dispersion is 500-1000W, and the ultrasonic time is 40-50min.
Preferably, the yttrium nitrate solution has a mass fraction of 2-5%; the mass fraction of the chitosan aqueous solution is 5-8%.
Preferably, the preparation method of the complex-tuning modifying liquid comprises the following steps:
s11: heating nanometer rectorite powder to 45-55deg.C, maintaining the temperature, adding into 5-10 times of sodium alginate water solution with mass fraction of 5%, stirring, washing with water, and drying;
s12: adding sodium silicate into water according to a weight ratio of 1:3, stirring at 70-80 ℃ for 25-35min, and stirring for 400-450r/min to obtain sodium silicate aqueous solution;
s13: and placing the S11 product in 2-3 times of sulfuric acid aqueous solution, then adding 10-15% of sodium silicate aqueous solution of the total S11 product and 2-5% of stearic acid of the total S11 product, and stirring thoroughly to obtain the complex-mixing modified liquid.
Preferably, the mass fraction of the sulfuric acid aqueous solution is 4-8%.
The invention also provides a preparation method of the activated carbon adsorption material, which comprises the following steps: the coconut shell activated carbon and chitosan modified nano zinc oxide agent are sent into the complex-mixing modification liquid to be fully stirred, and then the mixture is washed and dried; and (3) feeding the material into a die, pressing the material under the pressure of 10-15MPa for 20min, demolding, and finally, feeding the material into a 1000-1100 ℃ for thermal calcination for 1-2h, and obtaining the activated carbon adsorption material after the calcination.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the chitosan modified nano zinc oxide agent is matched with the coconut shell activated carbon, the chitosan modified nano zinc oxide agent is treated by the compound modification liquid, the ball milling agent prepared by sodium oxalate, aqueous hydrochloric acid, lanthanum nitrate and sodium dodecyl sulfate is used for ball milling modification with nano zinc oxide, the ball milling modified nano zinc oxide has high activity and dispersity, and after being matched with the chitosan adjustment liquid, the chitosan modified nano zinc oxide agent is matched with the chitosan adjustment liquid, the chitosan adjustment liquid is matched with yttrium nitrate solution, aqueous chitosan solution, sodium carboxymethylcellulose and silane coupling agent KH560, the dispersity and activity of nano zinc oxide are enhanced, and the hydroxyapatite is further matched, so that the optimized nano zinc oxide can be better adhered to an activated carbon pore canal through the hydroxyapatite synergistic effect, thereby improving the sterilization efficiency, and the rectorite in the compound modification liquid has a layered chain structure, and can be better matched with the chitosan modified nano zinc oxide after being modified in the sulfuric acid aqueous solution, the sodium silicate aqueous solution and stearic acid, so that the strength performance of a product system is improved, and the compressive strength is improved.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The active carbon adsorption material comprises coconut active carbon, chitosan modified nano zinc oxide agent and complex modulation modification liquid; wherein the mass ratio of the coconut shell activated carbon to the chitosan modified nano zinc oxide to the complex-tuned modified liquid is (2-3): (4-5): (9-11).
The particle size of the coconut shell activated carbon of the embodiment is 100-150nm.
The preparation method of the chitosan modified nano zinc oxide agent comprises the following steps:
s01: adding 1-3 parts of sodium oxalate into 10-15 parts of 5% hydrochloric acid aqueous solution by mass percent, uniformly stirring, then adding 2-5 parts of lanthanum nitrate and 0.2-0.4 part of sodium dodecyl sulfate, and fully stirring to obtain a ball grinding agent;
s02: firstly placing nano zinc oxide into a ball mill, then adding a ball milling agent accounting for 10-15% of the total amount of the nano zinc oxide, performing ball milling for 1-2 hours at a ball milling rotating speed of 1000-1200r/min, performing water washing after ball milling, and drying to obtain the ball milling nano zinc oxide;
s03: and (3) sending the ball-milling type nano zinc oxide into chitosan regulating solution which is 2-3 times of the ball-milling type nano zinc oxide for stirring modification treatment, and after stirring, washing and drying to obtain the chitosan modified nano zinc oxide agent.
The stirring speed of the stirring modification treatment is 600-700r/min, the stirring time is 35-45min, and the stirring temperature is 45-55 ℃.
The preparation method of the chitosan regulating solution in the embodiment comprises the following steps: adding 4-6 parts of yttrium nitrate solution into 10-20 parts of chitosan aqueous solution, then adding 1-3 parts of sodium carboxymethylcellulose and 0.45-0.65 part of silane coupling agent KH560, uniformly stirring, finally adding 5-8 parts of hydroxyapatite, and carrying out ultrasonic dispersion treatment to obtain the chitosan regulating solution.
The power of ultrasonic dispersion in this embodiment is 500-1000W and the ultrasonic time is 40-50min.
The mass fraction of the yttrium nitrate solution in the embodiment is 2-5%; the mass fraction of the chitosan aqueous solution is 5-8%.
The preparation method of the complex-tuning modifying liquid comprises the following steps:
s11: heating nanometer rectorite powder to 45-55deg.C, maintaining the temperature, adding into 5-10 times of sodium alginate water solution with mass fraction of 5%, stirring, washing with water, and drying;
s12: adding sodium silicate into water according to a weight ratio of 1:3, stirring at 70-80 ℃ for 25-35min, and stirring for 400-450r/min to obtain sodium silicate aqueous solution;
s13: and placing the S11 product in 2-3 times of sulfuric acid aqueous solution, then adding 10-15% of sodium silicate aqueous solution of the total S11 product and 2-5% of stearic acid of the total S11 product, and stirring thoroughly to obtain the complex-mixing modified liquid.
The mass fraction of the sulfuric acid aqueous solution of this example was 4-8%.
The preparation method of the activated carbon adsorption material of the embodiment comprises the following steps: the coconut shell activated carbon and chitosan modified nano zinc oxide agent are sent into the complex-mixing modification liquid to be fully stirred, and then the mixture is washed and dried; and (3) feeding the material into a die, pressing the material under the pressure of 10-15MPa for 20min, demolding, and finally, feeding the material into a 1000-1100 ℃ for thermal calcination for 1-2h, and obtaining the activated carbon adsorption material after the calcination.
Example 1.
The active carbon adsorption material comprises coconut active carbon, chitosan modified nano zinc oxide agent and complex modulation modification liquid; wherein the mass ratio of the coconut shell activated carbon to the chitosan modified nano zinc oxide to the complex-tuned modified liquid is 2:4:9.
the particle size of the coconut shell activated carbon of the embodiment is 100-150nm.
The preparation method of the chitosan modified nano zinc oxide agent comprises the following steps:
s01: adding 1 part of sodium oxalate into 10 parts of 5% hydrochloric acid aqueous solution by mass fraction, uniformly stirring, then adding 2 parts of lanthanum nitrate and 0.2 part of sodium dodecyl sulfate, and fully stirring to obtain a ball grinding agent;
s02: firstly placing nano zinc oxide into a ball mill, then adding a ball milling agent accounting for 10% of the total amount of the nano zinc oxide, performing ball milling for 1h at a ball milling rotating speed of 1000r/min, and performing water washing and drying after the ball milling is finished to obtain the ball milling type nano zinc oxide;
s03: and (3) sending the ball-milling type nano zinc oxide into chitosan regulating solution which is 2 times of the ball-milling type nano zinc oxide for stirring modification treatment, and after stirring, washing and drying to obtain the chitosan modified nano zinc oxide agent.
The stirring speed of the stirring modification treatment in this example was 600r/min, the stirring time was 35min, and the stirring temperature was 45 ℃.
The preparation method of the chitosan regulating solution in the embodiment comprises the following steps: adding 4 parts of yttrium nitrate solution into 10 parts of chitosan aqueous solution, then adding 1 part of sodium carboxymethyl cellulose and 0.45 part of silane coupling agent KH560, uniformly stirring, and finally adding 5 parts of hydroxyapatite, and carrying out ultrasonic dispersion treatment to obtain the chitosan regulating solution.
The power of the ultrasonic dispersion in this example was 500W and the ultrasonic time was 40min.
The mass fraction of the yttrium nitrate solution in the embodiment is 2%; the mass fraction of the chitosan aqueous solution is 5%.
The preparation method of the complex-tuning modifying liquid comprises the following steps:
s11: heating the nano rectorite powder to 45 ℃, then preserving heat, sending into sodium alginate aqueous solution with the mass fraction of 5% which is 5 times of that of the nano rectorite powder, uniformly stirring, and finally washing with water and drying;
s12: adding sodium silicate into water according to a weight ratio of 1:3, stirring at 70 ℃ for 25min, and stirring for 400r/min to obtain sodium silicate aqueous solution;
s13: and placing the S11 product in 2 times of sulfuric acid aqueous solution, then adding 10% of sodium silicate aqueous solution of the total S11 product and 2% of stearic acid of the total S11 product, and stirring thoroughly to obtain the complex-mixing modified liquid.
The mass fraction of the aqueous sulfuric acid solution of this example was 4%.
The preparation method of the activated carbon adsorption material of the embodiment comprises the following steps: the coconut shell activated carbon and chitosan modified nano zinc oxide agent are sent into the complex-mixing modification liquid to be fully stirred, and then the mixture is washed and dried; and (3) feeding the material into a die, pressing the material under the pressure of 10MPa for 20min, demolding, and finally, feeding the material into a 1000 ℃ for thermal calcination for 1h, and obtaining the activated carbon adsorption material after the calcination.
Example 2.
The active carbon adsorption material comprises coconut active carbon, chitosan modified nano zinc oxide agent and complex modulation modification liquid; wherein the mass ratio of the coconut shell activated carbon to the chitosan modified nano zinc oxide to the complex-tuned modified liquid is 3:5:11.
the particle size of the coconut shell activated carbon of this example was 150nm.
The preparation method of the chitosan modified nano zinc oxide agent comprises the following steps:
s01: adding 3 parts of sodium oxalate into 15 parts of 5% hydrochloric acid aqueous solution by mass percent, uniformly stirring, then adding 5 parts of lanthanum nitrate and 0.4 part of sodium dodecyl sulfate, and fully stirring to obtain a ball grinding agent;
s02: firstly placing nano zinc oxide into a ball mill, then adding a ball milling agent accounting for 15% of the total amount of the nano zinc oxide, performing ball milling for 2 hours at the ball milling rotating speed of 1200r/min, and performing water washing and drying after the ball milling is finished to obtain the ball milling type nano zinc oxide;
s03: and (3) sending the ball-milling type nano zinc oxide into chitosan regulating solution which is 3 times of the ball-milling type nano zinc oxide for stirring modification treatment, and after stirring, washing and drying to obtain the chitosan modified nano zinc oxide agent.
The stirring speed of the stirring modification treatment in this example was 700r/min, the stirring time was 45min, and the stirring temperature was 55 ℃.
The preparation method of the chitosan regulating solution in the embodiment comprises the following steps: adding 6 parts of yttrium nitrate solution into 20 parts of chitosan aqueous solution, then adding 3 parts of sodium carboxymethyl cellulose and 0.65 part of silane coupling agent KH560, uniformly stirring, and finally adding 8 parts of hydroxyapatite, and carrying out ultrasonic dispersion treatment to obtain the chitosan regulating solution.
The power of the ultrasonic dispersion in this example was 1000W and the ultrasonic time was 50min.
The mass fraction of the yttrium nitrate solution in the embodiment is 5%; the mass fraction of the chitosan aqueous solution is 5-8%.
The preparation method of the complex-tuning modifying liquid comprises the following steps:
s11: heating the nano rectorite powder to 55 ℃, then preserving heat, sending into sodium alginate aqueous solution with the mass fraction of 5% which is 10 times of that of the nano rectorite powder, uniformly stirring, and finally washing and drying;
s12: adding sodium silicate into water according to a weight ratio of 1:3, stirring at 80 ℃ for 35min, and stirring for 450r/min to obtain sodium silicate aqueous solution;
s13: and placing the S11 product in a sulfuric acid aqueous solution with the concentration of 3 times, then adding a sodium silicate aqueous solution with the concentration of 15% of the total S11 product and stearic acid with the concentration of 5% of the total S11 product, and stirring thoroughly to obtain the complex-mixing modified liquid.
The mass fraction of the aqueous sulfuric acid solution of this example was 8%.
The preparation method of the activated carbon adsorption material of the embodiment comprises the following steps: the coconut shell activated carbon and chitosan modified nano zinc oxide agent are sent into the complex-mixing modification liquid to be fully stirred, and then the mixture is washed and dried; and (3) feeding the material into a die, pressing the material under the pressure of 15MPa for 20min, demolding, and finally, feeding the material into a 1100 ℃ for thermal calcination for 2h, and obtaining the activated carbon adsorption material after the calcination.
Example 3.
The active carbon adsorption material comprises coconut active carbon, chitosan modified nano zinc oxide agent and complex modulation modification liquid; wherein the mass ratio of the coconut shell activated carbon to the chitosan modified nano zinc oxide to the complex-tuned modified liquid is 2.5:4.5:10.
the particle size of the coconut shell activated carbon of this example was 120nm.
The preparation method of the chitosan modified nano zinc oxide agent comprises the following steps:
s01: adding 2 parts of sodium oxalate into 12.5 parts of 5% hydrochloric acid aqueous solution by mass fraction, uniformly stirring, then adding 3.5 parts of lanthanum nitrate and 0.3 part of sodium dodecyl sulfate, and fully stirring to obtain a ball grinding agent;
s02: firstly placing nano zinc oxide into a ball mill, then adding a ball milling agent accounting for 12.5% of the total amount of the nano zinc oxide, performing ball milling for 1.5 hours at a ball milling rotating speed of 1100r/min, performing water washing and drying after the ball milling is finished, and obtaining the ball milling nano zinc oxide;
s03: and (3) sending the ball-milling type nano zinc oxide into chitosan regulating solution which is 2.5 times of the ball-milling type nano zinc oxide for stirring modification treatment, and after stirring, washing and drying to obtain the chitosan modified nano zinc oxide agent.
The stirring speed of the stirring modification treatment in this example was 650r/min, the stirring time was 40min, and the stirring temperature was 50 ℃.
The preparation method of the chitosan regulating solution in the embodiment comprises the following steps: adding 5 parts of yttrium nitrate solution into 15 parts of chitosan aqueous solution, then adding 2 parts of sodium carboxymethyl cellulose and 0.50 part of silane coupling agent KH560, uniformly stirring, and finally adding 6.5 parts of hydroxyapatite, and carrying out ultrasonic dispersion treatment to obtain the chitosan regulating solution.
The power of the ultrasonic dispersion in this example was 750W and the ultrasonic time was 45min.
The mass fraction of the yttrium nitrate solution in the embodiment is 3.5%; the mass fraction of the chitosan aqueous solution is 6.5%.
The preparation method of the complex-tuning modifying liquid comprises the following steps:
s11: heating nano rectorite powder to 50 ℃, then preserving heat, sending into sodium alginate aqueous solution with the mass fraction of 5% which is 7.5 times of that of the nano rectorite powder, uniformly stirring, and finally washing with water and drying;
s12: adding sodium silicate into water according to a weight ratio of 1:3, stirring for 30min at 75 ℃, and stirring for 420r/min to obtain sodium silicate aqueous solution;
s13: and placing the S11 product in 2.5 times of sulfuric acid aqueous solution, then adding 12% of sodium silicate aqueous solution of the total S11 product and 3.5% of stearic acid of the total S11 product, and stirring thoroughly to obtain the complex-mixing modified liquid.
The mass fraction of the aqueous sulfuric acid solution of this example was 6%.
The preparation method of the activated carbon adsorption material of the embodiment comprises the following steps: the coconut shell activated carbon and chitosan modified nano zinc oxide agent are sent into the complex-mixing modification liquid to be fully stirred, and then the mixture is washed and dried; and (3) feeding the material into a die, pressing the material under the pressure of 12.5MPa for 20min, demolding, and finally, feeding the material into a 1050 ℃ for thermal calcination for 1.5h, and obtaining the activated carbon adsorption material.
Comparative example 1.
The difference from example 3 is that no chitosan-modified nano zinc oxide agent was added.
Comparative example 2.
The difference from example 3 is that the ball milling type nano zinc oxide in the preparation of the chitosan modified nano zinc oxide agent is replaced by nano zinc oxide.
Comparative example 3.
The difference from example 3 is that the chitosan regulating solution is replaced by deionized water in the preparation of the chitosan modified nano zinc oxide agent.
Comparative example 4.
Unlike example 3, no hydroxyapatite was added to the chitosan conditioning liquid.
Comparative example 5.
The difference from example 3 is that no complex-modulated modification liquid treatment was used.
Comparative example 6.
The difference from example 3 is that the preparation method of the complex-tuning modifying liquid is different:
the preparation method of the complex-tuning modified liquid comprises the following steps:
the nano rectorite powder is placed in 2.5 times of sulfuric acid aqueous solution, then stearic acid accounting for 3.5 percent of the total amount of the S11 product is added, and the mixture is fully stirred, so as to obtain the complex-mixing modified liquid.
The average compressive strength of the sample is obtained by measuring 20 points on the surface of the ceramic filter element by adopting a micron indentation method, and the compressive strength is measured by adopting a vickers diamond indenter for indentation test, wherein the test application pressure is 2N.
The products of examples 1-3 and comparative examples 1-6 were tested for performance as follows:
table 1 shows the performance test tables of compressive strength and bacteriostasis rate of coliform bacteria, and the table 1;
table 1:
from the results of examples 1-3 and comparative examples 1-6, the compressive strength in example 3 of the invention is the greatest and can reach 0.96GPa, the bacteriostasis rate of the escherichia coli can realize long-term bacteriostasis effect, and the performance of the two can be improved in a coordinated manner;
the chitosan modified nano zinc oxide agent is not added into the product, the antibacterial effect of the product is obviously deteriorated, meanwhile, the complex-tuning modified liquid is not adopted for treatment, the compressive strength and antibacterial stability of the product are obviously deteriorated, and the complex treatment of the chitosan modified nano zinc oxide agent and the complex-tuning modified liquid is adopted, so that the antibacterial stability and compressive strength of the product can be obviously improved;
the ball milling type nano zinc oxide is replaced by nano zinc oxide in the preparation of the chitosan modified nano zinc oxide agent, the chitosan regulating solution is replaced by deionized water in the preparation of the chitosan regulating solution, no hydroxyapatite is added in the preparation of the chitosan regulating solution, the performances of the product are in a deterioration trend, and the performances of the complex regulating modified solution prepared by different methods are in a deterioration trend, only the chitosan modified nano zinc oxide agent and the complex regulating modified solution prepared by the method have the most remarkable performance effect.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (4)
1. The application of the activated carbon adsorption material in preparing the automobile air conditioner filter element is characterized in that the raw materials for preparing the activated carbon adsorption material comprise coconut shell activated carbon, chitosan modified nano zinc oxide agent and complex modulation modified liquid; wherein the mass ratio of the coconut shell activated carbon to the chitosan modified nano zinc oxide to the complex-tuned modified liquid is (2-3): (4-5): (9-11);
the preparation method of the complex-mixing modifying liquid comprises the following steps:
s11: heating nanometer rectorite powder to 45-55deg.C, maintaining the temperature, adding into 5-10 times of sodium alginate water solution with mass fraction of 5%, stirring, washing with water, and drying;
s12: adding sodium silicate into water according to a weight ratio of 1:3, stirring at 70-80 ℃ for 25-35min, and stirring for 400-450r/min to obtain sodium silicate aqueous solution;
s13: placing the S11 product in 2-3 times of sulfuric acid aqueous solution, then adding 10-15% of sodium silicate aqueous solution of the total S11 product and 2-5% of stearic acid of the total S11 product, and stirring thoroughly to obtain complex-mixing modified liquid;
the particle size of the coconut shell activated carbon is 100-150nm;
the preparation method of the chitosan modified nano zinc oxide agent comprises the following steps:
s01: adding 1-3 parts of sodium oxalate into 10-15 parts of 5% hydrochloric acid aqueous solution by mass percent, uniformly stirring, then adding 2-5 parts of lanthanum nitrate and 0.2-0.4 part of sodium dodecyl sulfate, and fully stirring to obtain a ball grinding agent;
s02: firstly placing nano zinc oxide into a ball mill, then adding a ball milling agent accounting for 10-15% of the total amount of the nano zinc oxide, performing ball milling for 1-2 hours at a ball milling rotating speed of 1000-1200r/min, performing water washing after ball milling, and drying to obtain the ball milling nano zinc oxide;
s03: sending ball-milling type nano zinc oxide into chitosan regulating solution which is 2-3 times of the ball-milling type nano zinc oxide for stirring modification treatment, and after stirring, washing and drying to obtain a chitosan modified nano zinc oxide agent;
the stirring speed of the stirring modification treatment is 600-700r/min, the stirring time is 35-45min, and the stirring temperature is 45-55 ℃;
the preparation method of the chitosan regulating solution comprises the following steps: adding 4-6 parts of yttrium nitrate solution into 10-20 parts of chitosan aqueous solution, then adding 1-3 parts of sodium carboxymethylcellulose and 0.45-0.65 part of silane coupling agent KH560, uniformly stirring, and finally adding 5-8 parts of hydroxyapatite, and performing ultrasonic dispersion treatment to obtain chitosan regulating solution;
the preparation method of the activated carbon adsorption material comprises the following steps: the coconut shell activated carbon and chitosan modified nano zinc oxide agent are sent into the complex-mixing modification liquid to be fully stirred, and then the mixture is washed and dried; and (3) feeding the material into a die, pressing the material under the pressure of 10-15MPa for 20min, demolding, and finally, feeding the material into a 1000-1100 ℃ for thermal calcination for 1-2h, and obtaining the activated carbon adsorption material after the calcination.
2. The use according to claim 1, wherein the power of the ultrasonic dispersion is 500-1000W and the ultrasonic time is 40-50min.
3. The use according to claim 1, wherein the yttrium nitrate solution has a mass fraction of 2-5%; the mass fraction of the chitosan aqueous solution is 5-8%.
4. The use according to claim 1, characterized in that the mass fraction of the aqueous sulfuric acid solution is 4-8%.
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| CN202310473205.0A CN116212819B (en) | 2023-04-28 | 2023-04-28 | Activated carbon adsorption material and application thereof in preparation of automobile air conditioner filter element |
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| CN115650707A (en) * | 2022-11-03 | 2023-01-31 | 中国人民解放军陆军装甲兵学院 | Preparation method of magnesia-alumina transparent ceramic |
| CN115745599A (en) * | 2022-11-11 | 2023-03-07 | 深圳玉汝成口腔材料有限公司 | Zirconium oxide-based antibacterial denture material and preparation method thereof |
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| CN115226731A (en) * | 2022-07-27 | 2022-10-25 | 广西科技师范学院 | Environment-friendly slow-release type file anti-corrosion, insect-prevention and bacteriostatic agent and preparation method thereof |
| CN115608054A (en) * | 2022-10-12 | 2023-01-17 | 广州领音航复合材料有限公司 | Antibacterial material and application thereof in preparation of automobile air conditioner filter element |
| CN115650707A (en) * | 2022-11-03 | 2023-01-31 | 中国人民解放军陆军装甲兵学院 | Preparation method of magnesia-alumina transparent ceramic |
| CN115745599A (en) * | 2022-11-11 | 2023-03-07 | 深圳玉汝成口腔材料有限公司 | Zirconium oxide-based antibacterial denture material and preparation method thereof |
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