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Method for continuous synthesis of a great amount of high specific surface area highly-graphitized carbon nano-cage by bubbling process

A technology of high specific surface area and carbon nano-cage, applied in the field of nanomaterials, can solve the problems of complicated preparation procedures and inability to continuously synthesize a large number of samples, and achieve the effects of simple equipment process, low gas price, and simple and easy process.

Inactive Publication Date: 2010-06-09
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

"Platinum supported on functionalized ordered mesoporous carbon as electrocatalyst for direct methanol fuel cells" published by L.Calvillo et al. in "Journal of Power Sources" ("Power Technology") 2007, No. 169, No. 59-64 Ordered Mesoporous Carbon Direct Methanol Fuel Cell Electrocatalyst), this paper proposes a method for synthesizing ordered mesoporous carbon using a silica template.

Method used

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  • Method for continuous synthesis of a great amount of high specific surface area highly-graphitized carbon nano-cage by bubbling process
  • Method for continuous synthesis of a great amount of high specific surface area highly-graphitized carbon nano-cage by bubbling process

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Effect test

Embodiment 1

[0019] The synthesis process is carried out in a high temperature quartz tube furnace open at both ends. Mix liquid carbonyl iron and ethanol evenly at a ratio (volume) of 1:3, and put it into a long glass test tube; put the mixed glass test tube into a mixed liquid of ice and water at 0°C, and connect it to a high-temperature quartz tube with a rubber tube. One end of the tube furnace. Then, the temperature of the high-temperature quartz tube furnace is raised to the reaction temperature of 900°C at a heating rate of 10°C / min. After the temperature is constant, the inert gas nitrogen is introduced, and the gas flow rate is 50l / h, so that the nitrogen gas continuously bubbles the water vapor generated by the mixed liquid. Bring it into the reaction furnace for reaction, and at the same time, a collection bottle is installed at the other end of the quartz tube furnace to continuously collect the products blown out by the reaction; at the reaction temperature, keep the gas flow ...

Embodiment 2

[0021] The synthesis process is carried out in a high temperature quartz tube furnace open at both ends. Mix liquid carbonyl iron and ethanol evenly at a ratio (volume) of 1:1, and put it into a long glass test tube; put the mixed glass test tube into a mixed liquid of ice and water at 0°C, and connect it to a high-temperature quartz tube with a rubber tube. One end of the tube furnace. Then the high-temperature quartz tube furnace is heated up to the reaction temperature of 1000°C at a heating rate of 10°C / min. After the temperature is constant, the inert gas nitrogen is introduced, and the gas flow rate is 200l / h, so that the nitrogen gas continuously bubbles the water vapor generated by the mixed liquid. Bring it into the reaction furnace for reaction, and at the same time, a collection bottle is installed at the other end of the quartz tube furnace to continuously collect the products blown out by the reaction; at the reaction temperature, keep the gas flow in the tube fur...

Embodiment 3

[0023] The synthesis process is carried out in a high temperature quartz tube furnace open at both ends. Mix liquid carbonyl iron and ethanol evenly at a ratio (volume) of 1:2, and put it into a long glass test tube; put the mixed glass test tube into a mixed liquid of ice and water at 0°C, and connect it to a high-temperature quartz tube with a rubber tube. One end of the tube furnace. Then, the high temperature quartz tube furnace is heated up to the reaction temperature of 1100°C at a heating rate of 10°C / min. After the temperature is constant, the inert gas nitrogen is introduced, and the gas flow rate is 200l / h, so that the nitrogen gas continuously bubbles the water vapor generated by the mixed liquid. Bring it into the reaction furnace for reaction, and at the same time, a collection bottle is installed at the other end of the quartz tube furnace to continuously collect the products blown out by the reaction; at the reaction temperature, keep the gas flow in the tube fu...

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Abstract

A method for continuously synthesizing a large amount of carbon nano cages with high specific surface area and high graphitization belongs to the technical field of nonmaterial. The invention employsethanol as carbon source, ferrum decomposed from liquid carbonyl iron as catalyst and nitrogen of inert gases as carrier gas or protective gas, then the nitrogen is enabled to continuously carry vaporgenerated by bubbling mixed liquor into a reactor for performing reaction, and a large amount of carbon-coated iron carbon nano cage structures. Simultaneously, the vapor is continuously carried outby the nitrogen from a reaction area, and products reacted and blown from the other end of a silica tube furnace can be continuously collected. The method has the advantages of simple and feasible process, high quality of the products, high quality of the compounded samples, low cost, environmental friendliness, free obvious flammable hazardous raw materials and low price of the gas.

Description

technical field [0001] The invention relates to a method in the technical field of nanomaterials, in particular to a method for continuously synthesizing a large number of carbon nanocages with high specific surface area and high graphitization by bubbling. Background technique [0002] For proton exchange membrane fuel cells, due to the large loss of battery voltage efficiency and battery output efficiency, if a suitable electrocatalyst is selected, the activation energy of polarization reaction can be reduced, the reaction speed can be increased, and the energy conversion efficiency of PEMFC can be improved. The carbon nanocage wall cavity is an ideal medium for the rapid adsorption / desorption of various gases, supplemented by the surface treatment that properly introduces specific functional groups, which can greatly increase its application in the field of selective adsorption / desorption separation technology. The size of carbon nanocages is on the order of nanometers, w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/02C01B31/04
Inventor 牛俊杰王健农
Owner SHANGHAI JIAOTONG UNIV