Showing papers by "Adrian Nur published in 2008"
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01 Jan 2008TL;DR: The results of the research show that natural zeolit is better than y type zeolit for CNT synthesis from ethanol of CVD method with Fe - Co catalyst and the optimum acid concentration in purification of CNT by acid contacted method was 3N as mentioned in this paper.
Abstract: An application of nanoparticle technology is carbon nanotube (CNT) CNT gives more some
advantages than the other materials These advantages make the research about CNT have many
attentions This research aims to determine the better type of catalyst supported between natural zeolit
and y type zeolit in CNT synthesis from ethanol using CVD (chemical vapor deposition) method with
Fe - Co as the catalysts In addition, the research aims to determine the optimum concentration of acid
in CNT purification In CNT synthesis using CVD method, the carbon source that obtained from the
ethanol was reacted with H
2
gas and Co - Fe catalysts Fe - Co catalyst was impregnated in catalyst
supported and dried in oven at 80
0
C for one day and then it was calcinated in furnace at 500
0
C on the
air flow for 60 minutes The synthesis process was done that the catalyst was put on the ceramic boat
and entered in the quartz reactor The reactor was vacuumed by vacuum pump The N
2 gas was
flowed with flow rate 200 cm
3
/minutes in room temperature The furnace was flamed and set at 900
0
C
Ethanol was flowed into the reactor and the flow rate of the N
2
gas was decreased to 6,19 cm
3
/minutes
and H2
began to be flowed, then it was reacted for 30 minutes Acid contacted method was used to
purification CNT The nitrate acid was diluted up to obtain 3N, 2N and 1N nitrate acid These nitrate
acid were mixed with CNT in beaker glass for 10 minutes, then they were put into oven for 24 hours
The CNT from synthesis process and CNT from purification process were analyzed by Scanning
Electron Microscopy (SEM) The results of the research show that natural zeolit is better than y type
zeolit for CNT synthesis from ethanol of CVD method with Fe - Co catalyst and the optimum acid
concentration in purification of CNT by acid contacted method was 3N
Keywords: CNT, synthesis, purification, SEM, ethanol