Oxidative stability of fullerenes

Journal Article · Thu Apr 14 00:00:00 EDT 1994 · Journal of Physical Chemistry; (United States)

DOI:https://doi.org/10.1021/j100066a001· OSTI ID:7166038

Scanlon, J C; Brown, J M ^[1]; Ebert, L B ^[2]

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1. Exxon Corporate Research Lab., Annandale, NJ (United States)
2. Univ. of Chicago, IL (United States)

Mixtures of fullerenes are more susceptible to oxidation than the pure phases of fullerenes. For example, a mixture of 90 wt % C[sub 60]/10 wt % C[sub 70] reacts with air at 300[degree]C for 24 h to yield a product containing 95% of the initial mass but which manifests an atomic ratio of carbon to oxygen of 2.3; in contrast, there is [le]1 wt % loss and no detectible oxygen content in 99.5% C[sub 60] under the same conditions. Furthermore, toluene-extracted fullerene soot prepared via the Kratschmer synthesis is found to be reactive to oxygen at ambient and higher temperatures. Room temperature handling of a toluene-extracted soot prepared from graphite leads to a steady-state oxygen content of about 3.8 wt % and a C/O atomic ratio of 33. Moreover, the reaction of extracted fullerene soot with air for 24 h at 300[degree]C yields a product of 60% of the initial mass of soot which contains 16.70 wt % oxygen and which shows a strong photoacoustically detected carbonyl infrared band at 1771 cm[sup [minus]1] and a C[sub sp2]-O band at 1249 cm[sup [minus]1]. With respect to changes in structure on heating in air, there is evidence for buckminsterfullerene (C[sub 60]) enhancing the growth of crystallite size measured along the (002), (100), and (110) directions of the soot relative to the case in which there is no buckminsterfullerene in the soot. 26 refs., 1 tab.

• OSTI ID: 7166038
• Journal Information: Journal of Physical Chemistry; (United States), Journal Name: Journal of Physical Chemistry; (United States) Vol. 98:15; ISSN JPCHAX; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360604 -- Materials-- Corrosion
Erosion
& Degradation
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKYLATED AROMATICS
AROMATICS
CARBON
CARBONYL RADICALS
CHEMICAL REACTIONS
CRYSTAL GROWTH
DATA
ELEMENTAL MINERALS
ELEMENTS
EXPERIMENTAL DATA
EXTRACTION
FULLERENES
GRAPHITE
HYDROCARBONS
INFORMATION
INFRARED SPECTRA
MINERALS
MOLECULAR STRUCTURE
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDATION
RADICALS
SEPARATION PROCESSES
SOOT
SPECTRA
STABILITY
SYNTHESIS
TOLUENE