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Supported ion liquid active carbon as well as preparation method and application thereof

An ionic liquid and activated carbon technology, applied in the field of activated carbon, can solve the problems of few activated carbon varieties, lack of functionalized high-quality special activated carbon, low technical content, etc., to reduce carbon absorption consumption and use costs, high adsorption efficiency, and large adsorption capacity. Effect

Inactive Publication Date: 2011-06-29
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the lack of activated carbon varieties, low technical content, and lack of functional high-quality special activated carbon, the application of my country's activated carbon industry to a higher level is restricted.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0020] The concrete steps of this loaded ionic liquid activated carbon preparation method are:

[0021] 1) Wash the coconut shell charcoal with pickling and water until it is neutral, and dry it at 100-120°C until it reaches a constant temperature, and set it aside;

[0022] 2) prepare the mixed solution of ionic liquid / ethanol according to the volume ratio;

[0023] 3) Mix the coconut shell charcoal with the ionic liquid / ethanol mixed solution prepared in step 2), impregnate it for 10-120 minutes under stirring, and dry it at 100-120°C to constant weight to obtain the loaded ionic liquid activated carbon .

[0024] 5%。 The loading of ionic liquid on the activated carbon loaded with ions is 1.5-3. 5%.

[0025] The activated carbon is used to adsorb volatile organic pollutants. The activated carbon can be applied to adsorb volatile organic pollutants, and furthermore, it has a higher adsorption effect on volatile organic pollutants such as formaldehyde, benzene, toluene, xyl...

Embodiment 1

[0027] Wash the coconut shell charcoal with pickling and water until it is neutral, and dry it at 100°C until it reaches a constant temperature for use. Weigh 5g of prepared coconut shell charcoal and put it into a conical flask, add 100ml of prepared ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate / ethanol (volume ratio is 1:5) and mix The solution was immersed for 20 minutes under magnetic stirring, and then taken out and placed in an oven at 105°C to dry to constant weight, and the loading capacity of the ionic liquid was 2.1%. The ionic liquid-loaded activated carbon was prepared. In the dynamic adsorption test, the adsorption capacity of formaldehyde was 10.5 mg / g. Under the same conditions, the adsorption capacity of AC without ionic liquid was 7.8 mg / g, and the adsorption equilibrium time was shortened by 43. %.

Embodiment 2

[0029] Wash the coconut shell charcoal with pickling and water until it is neutral, and dry it at 120°C until it reaches a constant temperature for use. Weigh 5g of prepared coconut shell charcoal and put it into a conical flask, add 100ml of prepared ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate / ethanol (volume ratio is 1:6) and mix The solution was impregnated for 40 minutes under magnetic stirring, taken out and placed in an oven at 100°C to dry to constant weight. The calculated ionic liquid loading was 2.8%, and the ionic liquid-loaded activated carbon was prepared. In the dynamic adsorption test, the adsorption capacity of formaldehyde was 9.9 mg / g, and the adsorption capacity of AC without ionic liquid was 7.8 mg / g under the same conditions, and the adsorption equilibrium time was shortened by 52%.

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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 [0001] The invention belongs to the field of activated carbon, and more specifically relates to a loaded ionic liquid activated carbon and its preparation method and application. Background technique [0002] Activated carbon has the advantages of developed pore structure, large specific surface area, rich surface functional groups, low ash content, stable chemical properties (acid resistance, alkali resistance, heat resistance), high mechanical strength, insoluble in water and organic solvents, and renewable reuse. It is widely used to control organic, inorganic, bacteria, dust and other pollutants in water, air, soil and other environments. However, due to the lack of activated carbon varieties, low technical content, and lack of functional high-quality special activated carbon, my country's activated carbon industry is restricted from moving towards a higher level of application. Modification of activated carbon to develop functional activated carbon that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/32B01D53/02
Inventor 陈孝云陆东芳陈星黄锦峰谭非
Owner FUJIAN AGRI & FORESTRY UNIV
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