A kind of carbon nanotube/activated carbon mesoporous composite pellet and preparation method thereof

A technology of carbon nanotubes and activated carbon, which is applied in chemical instruments and methods, alkali metal compounds, and other chemical processes, can solve the problems of poor spheroidization and size uniformity, and achieve good sphericity, uniform size, and elastic modulus. A large amount of effect

Active Publication Date: 2018-08-24
梁吉 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the technical problem of poor spheroidization and size uniformity in the process of carbon nanotube / activated carbon composite microspheres prepared in the prior art, and then provide a kind of good spheroidization, uniform size, smooth surface, rounded Carbon nanotube / activated carbon mesoporous composite pellets with good density and easy control of carbon nanotube content and preparation method thereof

Method used

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  • A kind of carbon nanotube/activated carbon mesoporous composite pellet and preparation method thereof
  • A kind of carbon nanotube/activated carbon mesoporous composite pellet and preparation method thereof

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Effect test

Embodiment 1

[0045] This embodiment provides a carbon nanotube / activated carbon mesoporous composite pellet and a preparation method thereof, the preparation method comprising the following steps:

[0046] S1. Acidification and dispersion treatment of carbon nanotubes: First, weigh 10 g of carbon nanotubes and put them into a planetary ball mill, mill them for 40 minutes at a rate of 200 rpm, and put the milled carbon nanotubes into hydrofluoric acid with a mass concentration of 1%. Soak for 24 hours; then wash the carbon nanotubes twice with deionized water, then add them to a mixed acid of concentrated sulfuric acid and concentrated nitric acid (volume ratio: 3:1) and reflux at 140° C. for 1 hour. The treated carbon nanotubes are washed with deionized water until the pH value of the washing solution is 5, and then freeze-dried before use;

[0047] S2, weigh 30g carbon nanotubes, starch 60g, powdered phenolic resin 20g, microcrystalline cellulose 10g after processing in step S1, add deion...

Embodiment 2

[0052] This embodiment provides a carbon nanotube / activated carbon mesoporous composite pellet and a preparation method thereof, the preparation method comprising the following steps:

[0053] S1. Acidification and dispersion treatment of carbon nanotubes: First, weigh 10 g of carbon nanotubes and put them into a planetary ball mill, mill them for 30 minutes at a rate of 600 rpm, and soak the milled carbon nanotubes in a nitric acid solution with a mass concentration of 30%. 4h; the above-mentioned carbon nanotubes were washed twice with deionized water, then added to a mixed acid of concentrated sulfuric acid and concentrated nitric acid (volume ratio: 2:1) and refluxed at 125°C for 4h. The treated carbon nanotubes are washed with deionized water until the pH value of the washing solution is 7, and then freeze-dried for use;

[0054] S2, weigh 40g carbon nanotubes, starch 55g, powdered phenolic resin 30g, microcrystalline cellulose 15g after processing in step S1, add deioniz...

Embodiment 3

[0059] This embodiment provides a carbon nanotube / activated carbon mesoporous composite pellet and a preparation method thereof, the preparation method comprising the following steps:

[0060] S1. Acidification and dispersion treatment of carbon nanotubes: First, weigh 10 g of carbon nanotubes and put them into a planetary ball mill, mill them at a rate of 1000 rpm for 20 minutes, and put the milled carbon nanotubes into hydrofluoric acid with a mass concentration of 2%. Soak for 24 hours; then wash the carbon nanotubes twice with deionized water, then add them into a mixed acid of concentrated sulfuric acid and concentrated nitric acid (volume ratio: 1:1) and reflux at 110° C. for 6 hours. The treated carbon nanotubes are washed with deionized water until the pH value is 6, and then freeze-dried before use;

[0061] S2. Weigh 50g of carbon nanotubes, 60g of powdered phenolic resin, and 50g of microcrystalline cellulose after processing in step S1, add 100g of deionized water ...

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Abstract

The invention discloses carbon nano tube / activated carbon mesoporous composite pellets and a preparation method thereof. The preparation method comprises the following steps that 1, a carbon nano tube is subjected to acid treatment and disperse treatment; 2, the carbon nano tube treated in the step 1 is evenly mixed with pelleting auxiliary materials and a wetting agent; 3, the mixed material obtained in the step 2 is pelletized, and precursors are obtained; 4, the precursors obtained in the step 3 are carbonized and activated to obtain the carbon nano tube / activated carbon mesoporous composite pellets. The pellets prepared through the preparation method are good in sphericity and uniform in size, solves the problem that the carbon nano tube is large in elasticity modulus, poor in flowability and not likely to be pelletized, is nontoxic and has good adsorptive property.

Description

technical field [0001] The invention belongs to the field of nanocomposite materials, and in particular relates to a carbon nanotube / activated carbon mesoporous composite pellet and a preparation method thereof. Background technique [0002] Carbon nanotube is a kind of nano material with excellent mechanical properties. Its macroscopic body contains developed medium and large pores and high specific surface area. It is an ideal medium and macromolecular adsorbent. The surface of carbon nanotubes is easy to modify, and selective adsorption becomes possible through specific regulation of the surface of carbon nanotubes. [0003] However, carbon nanotubes cannot be directly used in the adsorption and separation of various substances in the form of powder, because their recovery is very difficult, so carbon nanotubes must be prepared into macroscopic bodies that are easy to apply and easy to recycle, such as: particles of a certain size , which is preferably spherical or nearl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30B01J20/28C02F1/28
CPCB01J20/20B01J20/205B01J20/28019B01J20/28059B01J20/28061B01J20/28064B01J20/28071B01J20/28083C02F1/283
Inventor 梁吉巩前明
Owner 梁吉
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