Contribution to the Study of the Reactivity of Graphite with Respect to Carbon Dioxide and Air; CONTRIBUTION A L'ETUDE DE LA REACTIVITE DU GRAPHITE VIS A VIS DU GAZ CARBONIQUE ET DE L'AIR
Thesis/Dissertation
·
OSTI ID:4791091
Thesis submitted to Nancy, Universite. The oxidation of nuclear- quality graphite by air and carbon dioxide was studied at temperatures at which the reaction becomes measurable. These experiments were carrie~ out on graphites differing in the concentration and nature of their ash, and in their mode of preparation. The reaction velocities measured were compared in an attempt to correlate these two factors. Ten types of graphite were studied. Since the oxidation reactions are of the type gas-solid, their velocities were also compared to the BET surface areas of the graphite studied and to the diameter distribution of the pores of this surface. The conclusion is that, even for these low impurity contents, the law relating the reaction velocity to the surface is masked by the impurities which appear to behave as preferential reaction sites. Thi, was shown by carrying out successive purifications on various types of graphite, which treatment results in an important decrease in the reactivity of all the samples studied. (auth)
- Research Organization:
- France. Commissariat a l'Energie Atomique. Centre d'Etudes Nucleaires, Saclay
- NSA Number:
- NSA-16-016331
- OSTI ID:
- 4791091
- Report Number(s):
- CEA-1934
- Country of Publication:
- France
- Language:
- English
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