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  Home > JCE Print > Journal of Chemical Education > Issues > 1996  > June  >
Laboratory Experiments
Thermal Analysis of Carbon Allotropes: An Experiment for Advanced Undergraduates
D. M. Crumpton, R. A. Laitinen, J. Smieja, and D. A. Cleary
Gonzaga University, Spokane, WA 99258
Cover
June 1996
Vol. 73 No. 6
p. 590
Abstract
Thermogravimetric analysis (TGA) was performed on graphite powder, diamond powder, and C60 powder. Each sample was subjected to heating (20-1000 oC) in a nitrogen and an oxygen environment. The graphite and diamond were stable in nitrogen up to 1000 oC. The C60 sublimed/decomposed above 775 oC. All three samples were unstable in an oxygen environment. The relative order of stability of the samples in oxygen at high temperatures was C60 < diamond < graphite. The isothermal behavior of C60 at 750 oC in a nitrogen atmosphere was also investigated. A final weight equal to 12% of the initial sample weight was observed.
More Information
*  Citation
 Crumpton, D. M.; Laitinen, R. A.; Smieja, J.; Cleary, D. A. J. Chem. Educ. 1996 73 590.
*  Keywords
*  History
 Created:
Last Updated:		 9/23/1999
5/22/2006
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