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A kind of magnetic ionic liquid, its application and modified activated carbon and its preparation method

A magnetic ionic liquid and activated carbon technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of combustion and explosion biomass activated carbon modification effects, etc., to reduce the possibility of spontaneous combustion and explosion, strong applicability, and increase adsorption volume effect

Active Publication Date: 2021-11-05
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problems that existing biomass activated carbon is prone to combustion and explosion and the modification effect of biomass activated carbon is poor, the present invention provides a magnetic ionic liquid, its application, modified activated carbon and its preparation method

Method used

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  • A kind of magnetic ionic liquid, its application and modified activated carbon and its preparation method
  • A kind of magnetic ionic liquid, its application and modified activated carbon and its preparation method
  • A kind of magnetic ionic liquid, its application and modified activated carbon and its preparation method

Examples

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Effect test

Embodiment 1

[0030] A magnetic ionic liquid consisting of 1,3-dimethylurea, alanine and NiCl in a molar ratio of 2:2:1 2 ·6H 2 O is prepared, and the concrete steps are as follows:

[0031] 0.4mol of 1,3-dimethylurea, 0.4mol of alanine and 0.2mol of NiCl 2 ·6H 2 O was placed in a 200mL three-neck flask, and the temperature was raised to 60°C at a heating rate of 5.5°C / h, kept warm and stirred for 10h to obtain a transparent liquid, which was then vacuum-dried at 60°C for 24h to obtain the magnetic ionic liquid A.

Embodiment 2

[0033] A kind of magnetic ionic liquid, is 2:4:3 valine, thiourea and ZnCl by molar ratio 2 ·6H 2 O is prepared, and the concrete steps are as follows:

[0034] 0.4mol valine, 0.8mol thiourea and 0.6mol ZnCl 2 ·6H 2 O was placed in a 200mL three-necked flask, and the temperature was raised to 50°C at a heating rate of 6°C / h, kept warm and stirred for 8h to obtain a transparent liquid, which was then vacuum-dried at 60°C for 24h to obtain the magnetic ionic liquid B.

Embodiment 3

[0036] A magnetic ionic liquid consisting of phenylalanine, benzamide and CoCl in a molar ratio of 2:6:1 2 ·6H 2 O is prepared, and the concrete steps are as follows:

[0037] 0.4mol phenylalanine, 1.2mol benzamide and 0.2mol CoCl 2 ·6H 2 O was placed in a 200mL three-necked flask, and the temperature was raised to 75°C at a heating rate of 5.5°C / h, kept warm and stirred for 8h to obtain a transparent liquid, which was then vacuum-dried at 60°C for 24h to obtain magnetic ionic liquid C.

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Abstract

The invention relates to the technical field of adsorption materials, and specifically discloses a magnetic ionic liquid, its application, modified activated carbon and a preparation method thereof. The preparation method of the modified activated carbon comprises the following steps: mixing the magnetic ionic liquid and activated carbon, reacting at 30-90° C. for 2-24 hours, and obtaining the modified activated carbon through separation treatment. The modified activated carbon provided by the present invention significantly increases the saturation amount of adsorbed VOC waste gas, improves the adsorption efficiency, increases the spontaneous ignition point, significantly increases the lower explosion limit, and significantly reduces the possibility of deflagration. In addition, the modified activated carbon can effectively reduce the The oxygen content in the adsorption environment can further reduce the possibility of combustion and explosion of the gas-powder mixture.

Description

technical field [0001] The invention relates to the technical field of adsorption materials, in particular to a magnetic ionic liquid, its application, modified activated carbon and its preparation method. Background technique [0002] With the development of industry, the emission of industrial waste gas is also increasing day by day. Among them, volatile organic compounds (VOCs) have high emission intensity, long duration, high toxicity, and are very easy to form flammable mixed steam, which is a safe production for regional enterprises. Possesses a fire hazard. [0003] At present, VOCs treatment technologies include destructive methods and recycling methods. Biomass activated carbon, as one of the typical VOCs adsorbents, has the characteristics of large specific surface area and strong adsorption capacity, and is widely used in the adsorption and recovery of industrial waste gas. However, in the gas-solid multiphase adsorption process of biomass activated carbon and o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/32
CPCB01J20/0288B01J20/20B01J20/22B01J20/3246B01J20/3251
Inventor 任红威朱泓宇董磊齐卜弘苗壮郝鹏赵子乾柴天祥
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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