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Porous carbon adsorbent and preparation method and application thereof

A porous carbon and adsorbent technology, applied in chemical instruments and methods, other chemical processes, alkali metal oxides/hydroxides, etc., can solve problems such as difficult filtration and inconvenient adsorption of chromium ions, and achieve enhanced adsorption effect, Environmental protection, strong adsorption effect

Active Publication Date: 2018-01-30
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because activated carbon is light and difficult to filter, it is inconvenient to adsorb chromium ions and use it in glass

Method used

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  • Porous carbon adsorbent and preparation method and application thereof
  • Porous carbon adsorbent and preparation method and application thereof
  • Porous carbon adsorbent and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Prepare porous carbon adsorbent, the steps are as follows:

[0038] ①Put 1g of silica sand or glass fiber, 1g of glucose, 0.2g of sodium lauryl sulfate, 10mL of distilled water and 0.5mL of ethylenediamine into a 50ml reactor;

[0039] ②Put the reactor in an oven at 180°C for 8 hours;

[0040] ③After the reaction kettle drops to room temperature, filter the sample and dry it at 90°C;

[0041] ④Calcinate the sample at 700°C for 1h under nitrogen atmosphere;

[0042] ⑤ After the calcined sample was dehumidified for 7 days, soak it in 1.8wt% HCl solution for 1 hour, then wash it with distilled water, filter it, and dry it to form a porous carbon adsorbent.

[0043] After testing, the specific surface area of ​​porous carbon silica sand is 10.042m 2 / g, the specific surface area of ​​porous carbon glass fiber is 10.195m 2 / g, it can be seen that whether porous carbon is coated on silica sand or glass fiber has little effect on its specific surface area.

Embodiment 2

[0045] Prepare porous carbon adsorbent, the steps are as follows:

[0046] ①Put 1g of silica sand or glass fiber, 1g of glucose, 0.2g of sodium lauryl sulfate, 10mL of distilled water and 0.5mL of ethylenediamine into a 50ml reactor;

[0047] ②Put the reactor in an oven at 180°C for 8 hours;

[0048] ③After the reaction kettle drops to room temperature, filter the sample and dry it at 90°C;

[0049] ④Put the dried sample into 10ml of 10g / L KOH solution and evaporate to dryness in a drying oven;

[0050] ⑤ The evaporated sample was calcined at 700°C for 1 hour under a nitrogen atmosphere;

[0051] ⑥ After the calcined sample was deliquified in air for 7 days, it was soaked in 1.8wt% HCl solution for 1 hour, then washed with distilled water, filtered, and dried to form a porous carbon adsorbent.

[0052] The SEM scanning figure of the obtained porous carbon adsorbent is as follows: figure 1 shown, from figure 1 (Left) It can be seen that porous carbon is better coated on th...

Embodiment 3

[0056] Prepare porous carbon adsorbent, the steps are as follows:

[0057] ①Put 1g of silica sand, 1g of glucose, 0.2g of sodium lauryl sulfate, 10mL of distilled water and 0.5mL of ethylenediamine into a 50ml reaction kettle;

[0058] ②Put the reactor in an oven at 180°C for 8 hours;

[0059] ③After the reaction kettle drops to room temperature, filter the sample and dry it at 90°C;

[0060] ④Put the dried sample into 10ml of 10g / L KOH solution and evaporate to dryness in a drying oven;

[0061] ⑤ The evaporated samples were calcined at 600°C, 700°C, 800°C, and 900°C for 1 hour under the protection of nitrogen atmosphere.

[0062] ⑥ After the calcined sample deliquesces in the air for 30 days, it is soaked in 1.8wt% HCl solution for 1 hour, then washed with distilled water, filtered, and dried to form a porous carbon adsorbent.

[0063] The specific surface area, pore volume and pore diameter of the product obtained are shown in Table 1 below, as can be seen from Table 1, ...

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Abstract

The invention discloses a porous carbon adsorbent and a preparation method and application thereof. The preparation method comprises the following steps of: adopting glucose and sodium lauryl sulfateas carbon sources, wherein the sodium lauryl sulfate can also be called a soft templating agent; mixing silica sand or glass fiber, the glucose, the sodium lauryl sulfate, water and ethylenediamine, heating the mixture so as to carry out a hydrothermal carbonization reaction so that the surface of the silica sand or the glass fiber can be wrapped by porous carbon which is formed after the hydrothermal carbonization reaction, conducting filtration after the reaction, calcining a sample which is obtained after the filtration in the presence of potassium hydroxide so as to achieve activation, orconducting deliquesce after the calcination so as to obtain the porous carbon adsorbent. According to the porous carbon adsorbent and the preparation method and application thereof, the silica sand orthe glass fiber which has high density can be wrapped by the porous carbon which has low density, and the porous carbon adsorbent can be easily separated from a solution through sedimentation or filtration after use; besides, not only can the effect of strong adsorption of the porous carbon be retained, but also the inconvenience to recycling work of the porous carbon in glass ingredients can beeliminated after metal ions are adsorbed on the porous carbon of low weight, and therefore the application of the porous carbon adsorbent as an adsorbent and a colorant is facilitated.

Description

technical field [0001] The invention relates to a novel porous carbon adsorbent, in particular to a porous carbon adsorbent coated on the surface of silica sand, and also to a preparation method of the adsorbent and its application of adsorbing metal ions as a glass colorant. Background technique [0002] Activated carbon is an adsorbent with high specific surface area and excellent performance, which is widely used in many fields such as moisture absorption, deodorization, and wastewater treatment. However, it is light in weight, and after being used as an adsorbent for wastewater treatment, it floats on the surface of wastewater and is difficult to collect; when it is removed by filtration, activated carbon is also easy to adhere to the surface of the filter medium, blocking the pores of the filter medium, and reducing the filtration efficiency. [0003] In order to solve the problem that activated carbon is light and difficult to recycle, some people propose to coat the a...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30C03C1/04
Inventor 刘世权黄美苓
Owner UNIV OF JINAN
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