CN102107134A - Supported ion liquid active carbon as well as preparation method and application thereof - Google Patents
Supported ion liquid active carbon as well as preparation method and application thereof Download PDFInfo
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Abstract
The invention relates to a supported ion liquid active carbon as well as a preparation method and application thereof; the supported ion liquid active carbon provided by the invention is prepared from coconut shell carbon serving as a raw material by an immersion method; and the immersion liquid is a mixed solution mainly consisting of an ion liquid and ethanol at the volume ratio of (1:2)-(1:10). In the invention, the preparation method is simple; the prepared active carbon has higher absorptive capacity and higher absorption efficiency than those of the original active carbon; the consumption and working cost for the absorptive carbon can be effectively reduced; and the problem that carbon variety and amount are scarce in our country is relieved to a certain degree.
Description
Technical field
The invention belongs to the active carbon field, more specifically relate to a kind of supported ion liquid active carbon and its production and application.
Background technology
Active carbon because of the pore structure prosperity, specific area is big, surface functional group is abundant, content of ashes is low, chemical property (acidproof, alkaline-resisting, heat-resisting) is stable, mechanical strength is high, water insoluble and advantages such as organic solvent, renewable recycling, is widely used in administering pollutants such as organic and inorganic in the environment such as water body, air, soil, bacterium and dust.But since activated carbon variety few, with low content of technology, lack the high-quality special-purpose activated charcoal of functionalization, the higher level application of marching toward of restriction China active carbon industry.With activated carbon modified processing, develop can carry out efficiently pollutant, the functional activity charcoal of deep purifying, be to reduce the active carbon use cost, enlarge its scope of application, improve the effective way of its utilization ratio, be the direction of active carbon industry future development.
Ionic liquid is meant in room temperature or near presenting salt liquid, that be made up of zwitterion fully under the room temperature, is also referred to as watery fusion salt.Its developing history can be traced back to 1914, it generally is made up of organic cation and inorganic anion, and is different with typical organic solvent, and ionic liquid generally can not become steam, so it is in the chemical experiment process, can not produce the pernicious gas that atmosphere is polluted, and easy to use.Can cause that more the chemist is interested to be that ionic liquid can repeated multiple times use.In addition, do the process that catalyst also can quicken chemical reaction with ionic liquid.The chemist of British Petroleum Company is not blue to be said, if British Petroleum Company adopts ionic liquid in chemical process, the big organic solvent of volatility then capable of reducing using reduces the pollution to environment, reduces the generation of refuse.
The industrial waste gas that volatile organic contaminant mainly produces from fuel combustion and communications and transportation, vehicle exhaust, photochemical pollution etc.; At the indoor smog that then mainly comes combustion products such as spontaneous combustion coal and natural gas, smoking, heating and the cooking etc., the discharging of building and ornament materials, furniture, household electrical appliance, cleaning agent and human body itself etc.In the interior decoration process, VOC is mainly from paint, coating and adhesive.When the concentration of volatile organic contaminant in the room surpasses when a certain amount of, at short notice people will feel to have a headache, feel sick, the symptom of vomiting, limbs fatigue; Can twitch when serious, stupor, failure of memory.Can produce bigger harm to liver, kidney, brain and the nervous system of human body.Volatile organic contaminant has caused that in recent years various countries pay attention in the room.
Summary of the invention
In order effectively to address the above problem, the object of the present invention is to provide a kind of supported ion liquid active carbon, and this preparation method of active carbon and application.The preparation method of this invention is simple, and the active carbon of preparation has the adsorption capacity higher than former active carbon, adsorption efficiency faster, can effectively reduce adsorbent charcoal consumption and cost of use, alleviates China's charcoal description and quantity problem in short supply to a certain extent.
The present invention implements by following technical solution:
A kind of supported ion liquid active carbon is a raw material with the coconut husk charcoal, adopts infusion process to make the supported ion liquid active carbon, the mixed solution that this maceration extract mainly is made up of ionic liquid and ethanol, and its volume ratio is: 1:2 ~ 1:10.
Described ionic liquid is 1-butyl-3-methyl imidazolium tetrafluoroborate, 1-butyl-3-methylimidazole hexafluorophosphate, any one or a few of 1-hexyl-3-methyl imidazolium tetrafluoroborate.
The concrete steps of this supported ion liquid method for preparation of active carbon are:
1) with the coconut husk charcoal with pickling, be washed to neutrality, under 100-120 ℃, dry to perseverance, stand-by;
2) press the mixed solution that described volume ratio is prepared ionic liquid/ethanol;
3) with coconut husk charcoal and step 2) ionic liquid/alcohol mixed solution of preparing mixes, under agitation flood 10-120min after, under 100-120 ℃, dry to constant weight, obtain described supported ion liquid active carbon.
Ion liquid load capacity is 1.5-3.5% on the described supported ionic active carbon.
Described activated carbon application is in the adsorb volatile organic pollution.
Advantage of the present invention is:
1) product of the present invention's preparation is compared with traditional active carbon, and it is big that the adsorb volatile organic pollution is had adsorption capacity, and the characteristics that adsorption efficiency is high, this technology are a kind of environmentally friendly technology.
2) this active carbon can reduce suction charcoal consumption and cost of use to a certain extent in actual utilization.
The specific embodiment
A kind of supported ion liquid active carbon is a raw material with the coconut husk charcoal, adopts infusion process to make the supported ion liquid active carbon, the mixed solution that this maceration extract mainly is made up of ionic liquid and ethanol, and its volume ratio is: 1:2 ~ 1:10.
Described ionic liquid is 1-butyl-3-methyl imidazolium tetrafluoroborate, 1-butyl-3-methylimidazole hexafluorophosphate, any one or a few of 1-hexyl-3-methyl imidazolium tetrafluoroborate.
The concrete steps of this supported ion liquid method for preparation of active carbon are:
1) with the coconut husk charcoal with pickling, be washed to neutrality, under 100-120 ℃, dry to perseverance, stand-by;
2) press the mixed solution that described volume ratio is prepared ionic liquid/ethanol;
3) with coconut husk charcoal and step 2) ionic liquid/alcohol mixed solution of preparing mixes, under agitation flood 10-120min after, under 100-120 ℃, dry to constant weight, obtain described supported ion liquid active carbon.
Ion liquid load capacity is 1.5-3. 5% on the described supported ionic active carbon.
Described activated carbon application is in the adsorb volatile organic pollution.Described activated carbon can be applicable to the adsorb volatile organic pollution, and furtherly, volatile organic contaminants such as PARA FORMALDEHYDE PRILLS(91,95), benzene,toluene,xylene, vinyl chloride have higher adsorption effect.
Embodiment 1
The coconut husk charcoal is cleaned to neutral through pickling, water, under 100 ℃, dry to perseverance, stand-by.Taking by weighing the ready coconut husk charcoal of 5g packs in the conical flask, add ionic liquid 1-butyl-3-methyl imidazolium tetrafluoroborate/ethanol (volume ratio is 1:5) mixed solution that 100ml has prepared, under magnetic agitation, flood 20min, taking-up places baking oven, and 105 ℃ flood is dried to constant weight down, and this ionic liquid loaded amount is 2.1%.Make ionic liquid loaded active carbon, the adsorbance of its PARA FORMALDEHYDE PRILLS(91,95) is 10.5mg/g in dynamic adsorption test, under the same terms not the adsorbance of the AC PARA FORMALDEHYDE PRILLS(91,95) of supported ion liquid be 7.8 mg/g, the adsorption equilibrium time contracts and shortens 43%.
Embodiment 2
The coconut husk charcoal is cleaned to neutral through pickling, water, under 120 ℃, dry to perseverance, stand-by.Taking by weighing the ready coconut husk charcoal of 5g packs in the conical flask, add ionic liquid 1-butyl-3-methyl imidazolium tetrafluoroborate/ethanol (volume ratio is 1:6) mixed solution that 100ml has prepared, under magnetic agitation, flood 40min, taking-up places baking oven, and 100 ℃ flood is dried to constant weight down, this calculating is ionic liquid loaded to be 2.8%, makes ionic liquid loaded active carbon.The adsorbance of its PARA FORMALDEHYDE PRILLS(91,95) is 9.9mg/g in dynamic adsorption test, under the same terms not the adsorbance of the AC PARA FORMALDEHYDE PRILLS(91,95) of supported ion liquid be 7.8 mg/g, the adsorption equilibrium time shortens 52%.
Embodiment 3
With the coconut husk charcoal with pickling, be washed to neutrality, under 105 ℃, dry to perseverance, stand-by; Take by weighing the ready coconut husk charcoal of 5g and add ionic liquid 1-hexyl-3-methyl imidazolium tetrafluoroborate/ethanol (volume ratio is 1:2) mixed solution that 100ml has prepared; After under agitation flooding 10min, dry to constant weight under 120 ℃, obtain described supported ion liquid active carbon, ion liquid load capacity is 1.5% on this active carbon.This active carbon for preparing can be used for organic pollutions such as benzene, toluene are adsorbed.
Embodiment 4
With the coconut husk charcoal with pickling, be washed to neutrality, under 110 ℃, dry to perseverance, stand-by; Take by weighing the ready coconut husk charcoal of 5g and add ionic liquid 1-butyl-3-methylimidazole hexafluorophosphate/ethanol (volume ratio is 1:8) mixed solution that 100ml has prepared; After under agitation flooding 100min, dry to constant weight under 105 ℃, obtain described supported ion liquid active carbon, ion liquid load capacity is 3.5% on this active carbon.This active carbon for preparing can be used for organic pollutions such as vinyl chloride are adsorbed.
Embodiment 5
With the coconut husk charcoal with pickling, be washed to neutrality, under 110 ℃, dry to perseverance, stand-by; Take by weighing the ready coconut husk charcoal of 5g and add the ionic liquid 1-butyl-3-methylimidazole hexafluorophosphate that 100ml prepared and the mixed solution and the ethanol (volume ratio is 1:10) of 1-hexyl-3-methyl imidazolium tetrafluoroborate; After under agitation flooding 120min, dry to constant weight under 105 ℃, obtain described supported ion liquid active carbon, ion liquid load capacity is 3.0% on this active carbon.This active carbon for preparing can be used for organic pollutions such as paraxylene and adsorbs.
The above only is preferred embodiment of the present invention, and all equalizations of being done according to the present patent application claim change and modify, and all should belong to covering scope of the present invention.
Claims (5)
1. supported ion liquid active carbon, it is characterized in that: described active carbon is a raw material with the coconut husk charcoal, adopt infusion process to make the supported ion liquid active carbon, the mixed solution that this maceration extract mainly is made up of ionic liquid and ethanol, its volume ratio is: 1:2 ~ 1: 10.
2. a kind of supported ion liquid active carbon according to claim 1, it is characterized in that: described ionic liquid is 1-butyl-3-methyl imidazolium tetrafluoroborate, 1-butyl-3-methylimidazole hexafluorophosphate, any one or a few of 1-hexyl-3-methyl imidazolium tetrafluoroborate.
3. supported ion liquid preparation method of active carbon as claimed in claim 1 or 2, it is characterized in that: described preparation method's concrete steps are:
1) with the coconut husk charcoal with pickling, be washed to neutrality, under 100-120 ℃, dry to perseverance, stand-by;
2) press the mixed solution that described volume ratio is prepared ionic liquid/ethanol;
3) with coconut husk charcoal and step 2) ionic liquid/alcohol mixed solution of preparing mixes, under agitation flood 10-120min after, under 100-120 ℃, dry to constant weight, obtain described supported ion liquid active carbon.
4. according to the described a kind of supported ion liquid active carbon of claim 1,2 or 3, it is characterized in that: ion liquid load capacity is 1.5-3.5% on the described supported ionic active carbon.
A supported ion liquid Application of Brand Active Carbon as claimed in claim 1 and preparation method as claimed in claim 3 the preparation Application of Brand Active Carbon, it is characterized in that: described activated carbon application is in the adsorb volatile organic pollution.
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| CN102513063A (en) * | 2011-12-16 | 2012-06-27 | 福建农林大学 | Active carbon immobilized imidazole ionic liquid, preparation method thereof and application thereof |
| CN102631903A (en) * | 2012-05-08 | 2012-08-15 | 福建农林大学 | In-situ preparation method of activated carbon loaded with ionic liquid |
| CN102774837A (en) * | 2012-08-15 | 2012-11-14 | 福建农林大学 | Method for preparing activated carbon by taking ionic liquid as activator |
| CN103325581A (en) * | 2013-06-29 | 2013-09-25 | 渤海大学 | Hydrophobic ionic liquid activated carbon composite electrode material and preparing method thereof |
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| CN112076726A (en) * | 2019-06-12 | 2020-12-15 | 中国石油化工股份有限公司 | Mesoporous molecular sieve loaded with ionic liquid and preparation method and application thereof |
| CN113231029A (en) * | 2021-05-28 | 2021-08-10 | 南通大学 | Preparation method of activated carbon fiber functional material with efficient decolorizing performance |
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