Application of ionic liquid in preparation of modified active carbon, modified active carbon and preparation method of modified active carbon

A technology of ionic liquid and activated carbon, which is applied in the direction of chemical instruments and methods, and other chemical processes, can solve the problems of activated carbon modifiers polluting the environment, long time for adsorption, and low adsorption efficiency, so as to improve the adsorption efficiency and reduce the possibility of Sexuality and easy operation

Active Publication Date: 2019-07-30
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the low adsorption efficiency of existing activated carbon, the long time for adsorption and the potential safety hazard of spontaneous combustion, and the environmental pollution caused by activated carbon modifiers, the present invention provides an application of ionic liquid in the preparation of modified activated carbon, modified activated carbon and its preparation method

Method used

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  • Application of ionic liquid in preparation of modified active carbon, modified active carbon and preparation method of modified active carbon
  • Application of ionic liquid in preparation of modified active carbon, modified active carbon and preparation method of modified active carbon
  • Application of ionic liquid in preparation of modified active carbon, modified active carbon and preparation method of modified active carbon

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Embodiment 1

[0026] A preparation method of modified activated carbon, comprising the following steps:

[0027] (1) After mixing proline and imidazole with a molar ratio of 1:1, gradually raise the temperature to 90°C at a rate of 5°C / h, keep warm until the system is uniform and transparent, and then the imidazole-proline ionic liquid is obtained;

[0028] (2) The above-mentioned ionic liquid and activated carbon were mixed at a mass ratio of 4:1, treated at a constant temperature of 100° C. for 24 hours, and filtered to obtain modified activated carbon.

Embodiment 2

[0030] A preparation method of modified activated carbon, comprising the following steps:

[0031] (1) After mixing alanine and methanesulfonic acid with a molar ratio of 1:2, gradually raise the temperature to 85°C at a rate of 3°C / h, keep warm until the system is uniform and transparent, and obtain alanine-methanesulfonate ion liquid;

[0032] (2) The above-mentioned ionic liquid and activated carbon were mixed at a mass ratio of 5:1, treated at a constant temperature of 110° C. for 30 h, and centrifuged to obtain modified activated carbon.

Embodiment 3

[0034] A preparation method of modified activated carbon, comprising the following steps:

[0035] (1) After mixing phenylalanine and methanesulfonic acid with a molar ratio of 1:5, the temperature is gradually raised to 80°C at a rate of 7°C / h, and the temperature is kept until the system is uniform and transparent to obtain phenylalanine-methanesulfonic acid acid ionic liquid;

[0036] (2) The above-mentioned ionic liquid and activated carbon were mixed at a mass ratio of 6:1, treated at a constant temperature of 120° C. for 36 hours, and filtered to obtain modified activated carbon.

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Abstract

The invention relates to the technical field of adsorption materials, in particular to application of ionic liquid in preparation of modified active carbon, the modified active carbon and a preparation method of the modified active carbon. The preparation method comprises the following steps of mixing the ionic liquid with active carbon, carrying out constant-temperature treatment at 100-120 DEG Cfor 24-36 hours, and then carrying out separation treatment to obtain the modified active carbon. According to the provided modified active carbon, the saturated adsorption capacity of organic wastegas is increased by about 120%, the spontaneous combustion point is increased by about 30 DEG C, the adsorption efficiency of the modified active carbon is improved, the spontaneous combustion point becomes higher, and the possibility of spontaneous combustion is reduced.

Description

technical field [0001] The invention relates to the technical field of adsorption materials, in particular to the application of an ionic liquid in the preparation of modified activated carbon, the modified activated carbon and a preparation method thereof. Background technique [0002] In recent years, with the development of the national economy, people have higher and higher requirements for the quality of the air environment. Among them, organic waste gas, as a kind of air pollutants, has attracted many scholars because of its long duration and high toxicity. attention. Activated carbon is often used as an adsorption material for organic waste gas treatment because of its rich pore structure, large specific surface area, and good chemical stability. However, activated carbon generally has the problems of low adsorption efficiency and long adsorption time during the adsorption process, and spontaneous combustion may also occur during storage, transportation, and use. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30
CPCB01J20/20
Inventor 张金锋柳晓凯任红威李晨曦张楠朱鸿宇赵子乾
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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