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Organic modified activated carbon material and preparation method and application thereof

A modified and organic technology, applied in the field of organic modified activated carbon materials and its preparation, can solve problems such as not being able to meet production needs

Active Publication Date: 2015-12-02
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The above modification methods of activated carbon are all inorganic modification methods, although it can improve or enhance some aspects of the performance of activated carbon, such as increasing the active groups on the inner and outer surfaces of activated carbon such as hydroxyl, carboxyl, expanding the pore size, increasing the specific surface area, changing the surface The acidity and alkalinity, but still can not meet the actual production needs

Method used

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  • Organic modified activated carbon material and preparation method and application thereof
  • Organic modified activated carbon material and preparation method and application thereof
  • Organic modified activated carbon material and preparation method and application thereof

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Embodiment 1

[0069] This embodiment provides an organically modified activated carbon and a preparation method thereof, which includes the following steps:

[0070] (1) Activation of activated carbon

[0071] 35mL of 2mol / L nitric acid solution was added to a Schlenk bottle containing 2g of activated carbon raw material, and the reaction was stirred at 60°C for 3 hours. After the reaction, it was cooled to room temperature, vacuum filtered, washed with deionized water for 3 to 5 times, and then dried at 110°C for 12 hours to obtain activated activated carbon. The structure diagram of activated carbon after activation is as Figure 1A As shown, its IR is figure 2 As shown in b, the IR of the activated carbon is about 3300cm -1 There are a lot of hydroxyl stretching vibration peaks, indicating that the obtained nitrated activated carbon has abundant hydroxyl groups. figure 2 In the IRa of the activated carbon before activation, it can be seen that the broad peak exhibited by the hydroxyl group ...

Embodiment 2

[0082] Example 2 Performance test of organically modified activated carbon material

[0083] Using the MicromeriticsASAP2020 physical adsorption instrument, the organic modified activated carbon material obtained in Example 1, the activated carbon of the grafting initiator, the activated activated carbon and the activated carbon raw materials were subjected to nitrogen adsorption and desorption tests under the same conditions. , Nitrogen adsorption and desorption isotherm such as image 3 Shown from image 3 It can be observed that the organic modified activated carbon material, the activated carbon of the grafting initiator and the activated activated carbon all have obvious hysteresis rings. The hysteresis ring of the activated carbon of the grafting initiator is less than that of the activated carbon. The organically modified activated carbon material is smaller than the grafted activated carbon of the initiator, indicating that the pores of activated carbon are gradually bec...

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Abstract

The invention relates to an organic modified activated carbon material and a preparation method and an application of the organic modified activated carbon material. The organic modified activated carbon material is prepared by polymerization reaction of activated carbon for a grafting initiator which is prepared by reaction of activated carbon after activation with a compound shown as formula I, with a monomer shown as formula II, wherein definitions of all substituent groups in the formula I and the formula II are described in the specification. The organic modified activated carbon material provided by the invention can effectively reduce the pore diameters of macropores of the activated carbon, change the porous channel micro-environment and also impart certain 'flexibility' to porous channels of the modified activated carbon. The organic modified activated carbon material prepared by the invention has good adsorption performance for methane.

Description

Technical field [0001] The invention relates to an organically modified activated carbon material and a preparation method and application thereof, belonging to the technical field of material preparation. Background technique [0002] Activated carbon, also known as activated carbon black, is black powdered or granular amorphous carbon. Due to its relatively high specific surface area and large pore capacity, it is widely used in water purification, air purification, organic solvent recovery, aviation, military, food, catalyst carriers, electrode materials and other fields. However, due to the small specific surface area, uneven pore size distribution, and poor adsorption selectivity of ordinary activated carbon, it can not meet the needs of experiments and engineering well, so it is still necessary to modify the ordinary activated carbon. The prior art usually adopts process control and post-treatment technologies to adjust the pore structure of activated carbon and modify the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30B01D53/02
Inventor 任申勇张卡黄盛霖曾鹏晖申宝剑郭巧霞
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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