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Record 42 of 951
Fullerenes, PAH, Carbon Nanostructures, and Soot in Low Pressure Diffusion Flames
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Author and Affiliation:
Grieco, William J.(Massachusetts Inst. of Tech., Dept. of Chemical Engineering, Cambridge, MA United States)
Lafleur, Arthur L.(Massachusetts Inst. of Tech., Center for Environmental Health Sciences, Cambridge, MA United States)
Rainey, Lenore C.(Massachusetts Inst. of Tech., Dept. of Materials Science and Engineering, Cambridge, MA United States)
Taghizadeh, Koli(Massachusetts Inst. of Tech., Dept. of Chemical Engineering, Cambridge, MA United States)
VanderSande, John B.(Massachusetts Inst. of Tech., Dept. of Materials Science and Engineering, Cambridge, MA United States)
Howard, Jack B.(Massachusetts Inst. of Tech., Dept. of Chemical Engineering, Cambridge, MA United States)
Abstract: The formation of fullerenes C60 and C7O is known to occur in premixed laminar benzene/oxygen/argon flames operated at reduced pressures. High resolution transmission electron microscopy (HRTEM) images of material collected from these flames has identified a variety of multishelled nanotubes and fullerene 'onions' as well as some trigonous structures. These fullerenes and nanostructures resemble the material that results from commercial fullerene production systems using graphite vaporization. As a result, combustion is an interesting method for fullerenes synthesis. If commercial scale operation is to be considered, the use of diffusion flames might be safer and less cumbersome than premixed flames. However, it is not known whether diffusion flames produce the types and yields of fullerenes obtained from premixed benzene/oxygen flames. Therefore, the formation of fullerenes and carbon nanostructures, as well as polycyclic aromatic hydrocarbons (PAH) and soot, in acetylene and benzene diffusion flames is being studied using high performance liquid chromatography (HPLC) and high resolution transmission electron microscopy (HRTEM).
Publication Date: May 01, 1997
Document ID:
19970020549
(Acquired Jul 15, 1997)
Accession Number: 97N21822
Subject Category: INORGANIC AND PHYSICAL CHEMISTRY
Document Type: Conference Paper
Publication Information: Fourth International Microgravity Combustion Workshop; 13-18; (NASA-CP-10194); (SEE 19970020547)
Contract/Grant/Task Num: NAG3-1879
Financial Sponsor: NASA Lewis Research Center; Cleveland, OH United States
Organization Source: Massachusetts Inst. of Tech.; Cambridge, MA United States
Description: 6p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: DIFFUSION FLAMES; PREMIXED FLAMES; COMBUSTION CHEMISTRY; SOOT; POLYCYCLIC AROMATIC HYDROCARBONS; FULLERENES; FUEL COMBUSTION; CARBON; MICROSTRUCTURE; COMBUSTION PRODUCTS; TRANSMISSION ELECTRON MICROSCOPY; LIQUID CHROMATOGRAPHY; LOW PRESSURE; ARGON; BENZENE; OXYGEN; VAPORIZING
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