Preparation and characterization of mesophasic carbon materials enriched in nitrogen :

Abstract : The production of carbonaceous material enriched in nitrogen was done by several ways :1) by copyrolysis of mixtures coal tar pitch/ polymer (PAN and PVP) and 2) by ammoxydation of mesogenic carbonaceous material. By copyrolysis, the thermal behaviour of the blends has been more especially studied by TGA and on line gases analysis. In this case, we have demonstrated that the pitch play the role of radical scavenger during the thermal treatment. The XPS study of the produced solids shows the strong evolution of nitrogen functional groups according to the temperature. The optical texture of the solids have also been determined and discussed. By ammoxydation, we have demonstrated that the resultant solids have nitrogen surface functional groups. These groups were identified and quantified by XPS and infra red spectroscopy (in diffuse reflectance mode). Finally, some electrochemical properties of the studied solids are described and discussed.
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Bartosz Grzyb. Preparation and characterization of mesophasic carbon materials enriched in nitrogen :. Other. Université Paul Verlaine - Metz, 2003. English. ⟨NNT : 2003METZ028S⟩. ⟨tel-01749540⟩

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