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Porous carbon material based on eupatorium adenophorum as well as preparation method and application of porous carbon material

A porous carbon material, Eupatorium adenophorum technology, applied in chemical instruments and methods, other chemical processes, water/sludge/sewage treatment, etc., can solve the problems of environmental protection and preparation difficulties, and achieve good removal effect, The environmental protection effect of the preparation process

Pending Publication Date: 2022-05-10
CHINA TOBACCO YUNNAN IND
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these preparation methods firstly require solution soaking and activation, which is not environmentally friendly; secondly, microwave heating is required, and large-scale industrial preparation is difficult; in addition, the obtained activated carbon material contains a small amount of metal ions, and the adsorption of phenol in water will bring impurity metal ions

Method used

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  • Porous carbon material based on eupatorium adenophorum as well as preparation method and application of porous carbon material
  • Porous carbon material based on eupatorium adenophorum as well as preparation method and application of porous carbon material
  • Porous carbon material based on eupatorium adenophorum as well as preparation method and application of porous carbon material

Examples

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Embodiment 1

[0028] Embodiment 1: A preparation method based on Eupatorium adenophorum porous carbon material, the steps are as follows:

[0029] Cut the stem of Eupatorium adenophorum into inch-long sections, wash and remove dust, then soak in 5wt% HCl solution for 2 days and then wash with distilled water to remove HCl; after drying in an oven at 90 ° C, place in a tube furnace, Under the atmosphere, the temperature was raised to 350° C. at a rate of 5° C. / min and heated for 2 hours, and then the temperature was raised to 900° C. for carbonization for 5 hours to obtain the porous carbon material based on Eupatorium adenophorum.

[0030] figure 1 It is the EDS diagram of the prepared porous carbon material. Depend on figure 1 It can be seen that the prepared porous carbon material only contains C and O elements, and does not contain other impurity elements. It shows that the small amount of metal elements inherent in the stem of Eupatorium bauhinia has been eluted by HCl solution, and ...

Embodiment 2

[0033] Example 2: The Eupatorium adenophorum-based porous carbon material prepared in Example 1 was used for the adsorption of phenol in water.

[0034] Select an aqueous solution with an initial concentration of phenol of 100mg / L, change the amount of porous carbon material to 0.2-0.7g / L, and adsorb for 12 hours to investigate the adsorption of phenol by the amount of adsorbent; the effect of the amount of adsorbent by porous carbon material on adsorption is as follows Figure 4 shown. From Figure 4It can be clearly seen that with the increase of the amount of porous carbon material adsorbent, the adsorption rate of phenol increases, and the adsorption rate reaches the maximum when the amount of porous carbon material adsorbent is equal to 0.5g / L, and then the adsorption tends to balance. However, the adsorption amount of phenol showed a significant downward trend with the increase of the amount of porous carbon material adsorbent. This is because the increase in the amount...

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Abstract

The invention discloses a preparation method of a porous carbon material, which comprises the following steps: (1) soaking Eupatorium adenophorum plant in a hydrochloric acid solution, cleaning with distilled water, and drying; and (2) heating to a medium temperature in an inert atmosphere, keeping for a period of time, heating to a high temperature, and carbonizing for a period of time to obtain the porous carbon material. The invention further discloses the prepared porous carbon material and application of the porous carbon material to adsorption of phenol in water.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a porous carbon material based on Eupatorium adenophorum, its preparation method and application. Background technique [0002] Phenol is an important raw material in industrial production. It is highly toxic and persists in the environment. Therefore, phenol pollution has become an environmental pollution problem that cannot be ignored. Many technologies have been developed for the removal of phenolic compounds in sewage; compared with other technologies, adsorption has the advantages of low cost, simple design, and easy operation, and is widely used in laboratories and industrial production. Activated carbon is the most widely used and effective adsorbent because of its high stability and porous structure, which makes it have a large specific surface area. The template method is the main method for preparing porous carbon materials. However, chemical ...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28C02F101/34
CPCB01J20/20B01J20/28064B01J20/28071C02F1/283C02F2101/345B01J2220/485
Inventor 李振杰刘志华闫智英王家强何沛王文元苏杨唐石云蒋薇徐艳群
Owner CHINA TOBACCO YUNNAN IND
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