A preparing method of a porous carbon nanotube-charcoal spherical composite material

A technology of composite materials and carbon nanotubes, which is applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of low production efficiency and difficult activation, and achieve large mesopore volume and pore size. The structure is developed and the effect of maintaining sphericity

Active Publication Date: 2015-08-12
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Secondly, the above processes are all batch-type batch production. The autoclave emulsification method requires pre-crushing and screening, and the suspension polymerization method requires classification after curing, and the production efficiency is low.
In addition, the composite microspheres prepared by the prior art are relatively dense, and the surface layer has good activatability, but the interior is not easily activated.

Method used

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  • A preparing method of a porous carbon nanotube-charcoal spherical composite material
  • A preparing method of a porous carbon nanotube-charcoal spherical composite material
  • A preparing method of a porous carbon nanotube-charcoal spherical composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) Weigh 1 g of self-made carbon nanotubes and place them in 30 mL of ethanol aqueous solution (volume concentration of ethanol is 60%) for ultrasonic dispersion for 60 min;

[0045] (2) Take by weighing 2g of liquid phenolic resin and dissolve it in 20mL of ethanol to obtain a resin dilution, wherein the mass concentration of the liquid phenolic resin is 11.2%; add the carbon nanotubes after ultrasonic dispersion to the resin dilution, and ultrasonically stir for 30min to obtain The homogeneous suspension of carbon nanotubes is then fully stirred after adding 0.3g p-toluenesulfonyl chloride to obtain a spherical liquid;

[0046] (3) The measured density is 0.95g / cm 3 500mL of silicone oil is placed at the bottom of the container, and the measured density is 0.83g / cm 3 Place 500mL of liquid paraffin oil on top of the silicone oil to form a two-layer oil bath, and preheat it to 70°C in an oven; select a No. Drop the sphere-forming solution into two layers of oil baths...

Embodiment 2

[0052] (1) Weigh 1 g of self-made carbon nanotubes and place them in 30 mL of ethanol aqueous solution (volume concentration of ethanol is 60%) for ultrasonic dispersion for 60 min;

[0053] (2) Take by weighing 6g of liquid phenolic resin and dissolve it in 20mL of ethanol to obtain a resin dilution, wherein the mass concentration of the liquid phenolic resin is 27.5%; add the carbon nanotubes after ultrasonic dispersion to the resin dilution, and ultrasonically stir for 60min to obtain The homogeneous suspension of carbon nanotubes is then fully stirred after adding 0.6g p-toluenesulfonyl chloride to obtain a spherical liquid;

[0054] (3) The measured density is 0.95g / cm 3 500mL of silicone oil is placed at the bottom of the container, and the measured density is 0.83g / cm 3 Place 300mL of liquid paraffin oil on top of the silicone oil to form a two-layer oil bath, and preheat it to 65°C in an oven; select a No. Drop the sphere-forming liquid into two layers of oil baths t...

Embodiment 3

[0060] (1) Weigh 2 g of self-made carbon nanotubes and place them in 40 mL of ethanol aqueous solution (volume concentration of ethanol is 60%) for ultrasonic dispersion for 120 min;

[0061] (2) Take by weighing 1.5g liquid phenolic resin and be dissolved in 20mL ethanol to obtain resin dilution, wherein the mass concentration of liquid phenolic resin is 8.7%; Add the carbon nanotubes after ultrasonic dispersion in the resin dilution, ultrasonically stir for 90min, To obtain a uniform suspension of carbon nanotubes, then add 0.24g of p-toluenesulfonyl chloride and then fully stir to obtain a spherical solution;

[0062] (3) The measured density is 0.95g / cm 3 300mL of silicone oil is placed at the bottom of the container, and the measured density is 0.91g / cm 3 300mL of soybean oil is placed on top of the silicone oil, and the density is 0.83g / cm 3 Place 500mL of liquid paraffin oil on top of the silicone oil to form a three-layer oil bath, and preheat it to 70°C in an oven; ...

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Abstract

The invention relates to a preparing method of a porous carbon nanotube-charcoal spherical composite material. The method includes dispersing carbon nanotubes; preparing a resin diluting liquid; adding the carbon nanotubes to obtain a uniform suspension; adding a curing agent to form a balling liquid; adding the balling liquid into a layering oil bath dropwise, suspending, curing, separating, washing and drying in order to obtain small composite balls; subjecting the composite balls to carbonization and activation to obtain small activated balls; and cleaning and drying the small activated balls to obtain the porous carbon nanotube-charcoal spherical composite material. The preparing method combines a dropping method and layered oil bath curing to prepare the composite material. A dropping process is adopted so that the ball size is uniform and grading is not required. The content of the carbon nanotubes in the prepared composite material is far higher than that at present. The composite material is wide in ball size range and uniform and controllable in size. The small balls are relatively loose. Surface activability and inner activability of whole balls are excellent.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, in particular to a method for preparing a porous carbon nanotube-carbon spherical composite material. Background technique [0002] Carbon nanotubes (CNTs) are a new type of nanomaterial with good mechanical properties, and its macroscopic body has well-developed medium and large pores and high specific surface area, and is an ideal medium and macromolecular adsorption material. The surface of carbon nanotubes is easy to modify, and the modified surface can carry various groups. Through the specific regulation of the surface of carbon nanotubes, the selective adsorption of adsorption objects becomes possible. At present, there are a lot of research reports on the application of carbon nanotubes in sewage treatment, drug carrier, oil adsorption and hemoperfusion. However, the current large-scale production technology of carbon nanotubes is mainly the vapor phase deposition method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02B82Y30/00
Inventor 巩前明梁吉
Owner TSINGHUA UNIV
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