scholarly journals Роль карбида кремния в электродуговом синтезе высших фуллеренов

2020 ◽  
Vol 90 (1) ◽  
pp. 110
Author(s):  
И.Е. Кареев ◽  
А.Е. Дутлов ◽  
В.П. Бубнов
Keyword(s):  
Silicon Carbide ◽  
Total Yield ◽  
Electric Arc ◽  
Graphite Electrodes ◽  
Higher Fullerenes ◽  
Formation Efficiency

The influence of silicon atoms in the graphite electric arc zone on the formation efficiency of higher fullerenes C76, C78, C80, C82, C84, C86, etc. was studied. Additives of silicon carbide from 0 to 6.3 wt. % of composite graphite electrodes and optimization of the conditions of their evaporation make it possible to obtain soot with a content of higher fullerenes up to 15.5 wt.% in the extract and at the same time with a high total yield of fullerenes 10.5 wt.%.

scholarly journals Carbon Nanofoam by Pulsed Electric Arc Discharges

2018 ◽  
Vol 2018 ◽  
pp. 1-10
Author(s):  
David Saucedo-Jimenez ◽  
Isaac Medina-Sanchez ◽  
Carlos Couder Castañeda
Keyword(s):  
Carbon Nanostructures ◽  
Arc Discharge ◽  
Low Cost ◽  
Molar Fraction ◽  
Electric Arc ◽  
Graphite Electrodes ◽  
Electric Arc Discharge ◽  
Pure Carbon ◽  
Arc Discharges ◽  
Dc Current

The aim of this article was to report the carbon nanofoam synthesis by a new method and a new catalytic mixture. Using the pulsed electric arc discharge method, carbon nanofoam was synthesized. The synthesis was carried out in a controlled atmosphere at 200 torr of hydrogen pressure. The pulsed electric arc discharge was established between two graphite electrodes with 22.8 kVA of power and 150 A DC current; the cathode was relatively motionless and was made of a pure carbon rod of 6 mm diameter, and the spinner anode was a pure carbon disc spinning at 600 rpm; over the disc was an annular cavity where the new catalytic mixture of 93.84/2.56/1.43/0.69/1.48 of C/Ni/Fe/Co/S molar fraction was deposited in a geometrically fixed way by 8 catalytic mixture blocks and 8 empty spaces, and the discharge frequency was 80 Hz. After the synthesis was made, the resulting products were deposited on the electrodes, proving that our method can synthesize different carbon nanostructures easily and at low cost.

Sign in / Sign up

Export Citation Format

Share Document