研究目的
To synthesize carbon nanotubes from Iraqi natural gas using a modified flame fragments deposition method in the presence and absence of catalysts.
研究成果
The flame fragments deposition method is an economic and safe method for synthesizing multi-walled and few-walled carbon nanotubes. The home-made instrument allowed for the synthesis under the same conditions, providing a method for comparing the activities of different catalysts.
研究不足
The study was limited to the use of Iraqi natural gas and specific catalysts. The home-made instrument may not provide the same level of control as commercial equipment.
1：Experimental Design and Method Selection:
A modified flame fragments deposition method was used for synthesizing carbon nanotubes from Iraqi natural gas. Four types of catalysts were used: iron doped on magnesium oxide (Fe/MgO), iron-cobalt doped on calcium carbonate (Fe-Co/CaCO3), and iron(III) oxide.
2：Sample Selection and Data Sources:
Iraqi natural gas was used as the carbon source.
3：List of Experimental Equipment and Materials:
A home-made flame fragments deposition instrument was used, along with natural gas, oxygen, and nitrogen gases.
4：Experimental Procedures and Operational Workflow:
The synthesis process involved combustion of natural gas in the presence of oxygen and nitrogen, with nanotube deposition occurring on the surface of tin foil. The process took 22 minutes at 140-150 oC.
5：Data Analysis Methods:
X-ray diffraction, Raman spectroscopy, scanning electron microscopy, and thermogravimetric analysis were used for characterization.
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