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Formed nano-carbon fibre carrier and preparation thereof

A nano-carbon fiber and carrier technology, applied in the field of materials, can solve the problems that compression molding method is not suitable for mass production, limited application, complicated process, etc., and achieve the effect of simple and convenient molding equipment, easy scale production and low cost

Inactive Publication Date: 2010-06-02
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the molding process is complicated, and the sample needs to be heated at high temperature for a long time, which consumes a lot of energy, and the compression molding method is not suitable for continuous mass production.
At the same time, the nano-carbon fiber molded body obtained by this method has increased the micropore volume several times due to the carbonization of a large amount of binder phenolic resin into the pore structure formed by the winding of nano-carbon fibers (Li P, Zhao TJ, Zhou JH et.al., Characterization of carbon nanofiber composites synthesized by shaping process, carbon, 2005, 43: 2701-2710), which limits its application in catalytic reaction systems with high diffusion resistance

Method used

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  • Formed nano-carbon fibre carrier and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1 , Preparation of carbon nanofiber carrier

[0024] Weigh 40g of nano-carbon fiber powder, 22.2g of pseudo-boehmite dry glue (produced by Fushun Petrochemical Research Institute, with an alumina content of 60%), 1g of citric acid, 1g of turmeric powder, 1g of nitric acid, and 79g of water. The above samples were fully mixed and kneaded into a plastic material and added to an extruder (F-26 twin-screw extruder, manufactured by South China University of Science and Technology Industrial Factory) to extrude into a clover-shaped strip with a diameter of 1.4mm. After air drying overnight, it was dried at 110°C for 4 hours. The dried sample was placed in a muffle furnace, the temperature was raised to 400° C. at a rate of 3° C. / min, and kept at this temperature for 6 hours to prepare carrier A.

Embodiment 2

[0025] Example 2 , Preparation of carbon nanofiber carrier

[0026] Take by weighing 40g of nano-carbon fiber powder, 114.2g of pseudo-boehmite dry rubber powder (pural SB powder produced by Sasol company, with an alumina content of 70%), 1g of citric acid, 1g of turmeric powder, add 1.5g of nitric acid, 18.5g of water, The above samples were fully mixed and kneaded into a plastic material and added to an extruder (F-26 twin-screw extruder, manufactured by the South China University of Science and Technology Industrial Factory), extruded into a four-leaf clover shape, and the dried sample was placed in an inert Atmosphere (Ar, N 2 ) to 600° C. for 4 hours to obtain carrier B.

Embodiment 3

[0027] Example 3 , Preparation of carbon nanofiber carrier

[0028] Take by weighing 40g of nano-carbon fiber powder, 66.7g of pseudo-boehmite dry rubber powder (pural SB powder produced by Sasol Company, with an alumina content of 70%), 0.2g of citric acid, 0.2g of kale powder, add 1.5g of nitric acid, 38.5g of water g. Mix the above samples thoroughly. Carrier C was prepared according to the conditions described in Example 1.

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Abstract

The invention discloses a formed nanometer fiber carrier and manufacturing method thereof. The carrier is composed of a nanometer fiber, a bond alumina, a paste extrusion and a peptizator. Based on weight of anometer fiber dry basis, content of alumina is 33% to 200%, content of paste extrusion 1% to 5% and content of peptizator 50% to 200%. The formed nanometer fiber carrier prepared by the method of the invention can be directly used as a catalyst of some processes, but is more appropriate for catalyst carrier, in particular a hydrotreatment catalyst carrier in petroleum processing process.The forming method of the invention is simple in device and operation, which is easy to realize scale production.

Description

technical field [0001] The invention relates to the field of materials, in particular to a formed nano-carbon fiber carrier and a preparation method thereof. Background technique [0002] Carbon nanofiber (CNF for short) is a new type of carbon material that has been paid attention to since 1991. Because of its special physical and chemical properties such as low density, high specific modulus, high specific strength, and high conductivity, it has become a research hotspot in recent years. Carbon nanofiber is an emerging material with great application prospects, which can be used as catalyst or catalyst carrier, electrode material, adsorbent, reinforcing material, etc. [0003] CNF is used in the field of catalysis as a catalyst or catalyst carrier. Compared with traditional carbon-based catalytic materials such as activated carbon, it has many advantages, such as controllable microstructure, strong interface effect, mesopore characteristics, high thermal stability and mec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J32/00B01J21/04B01J21/18
Inventor 周静红陈聪方向晨郭蓉隋志军周兴贵
Owner EAST CHINA UNIV OF SCI & TECH
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